BLUE SEA SYSTEM RELAYS
Blue Sea Systems Relays
Automatic Charging Relays for Efficient Dual Battery Management in Boats and Vehicles
Blue Sea Systems offers a wide range of Automatic Charging Relays (ACR) designed to manage auxiliary batteries with precision and reliability. These relays automatically combine two battery banks during charging and isolate them during discharging, ensuring efficient power management in boats or vehicles with dual battery systems. Charging both banks from a single source, such as an alternator, becomes simple while keeping them isolated during non-charging periods. This setup provides a crucial safeguard—if one battery is depleted, a charged bank remains available for emergency starting.
The Battery Link relay automatically distributes charge to both batteries, while the ML-ACR relay combines batteries during charging and isolates them during discharge. The Start Isolation (SI-ACR) relay functions similarly to the ML-ACR but is built to handle high-output alternators. The ML-Series, featuring a magnetic latch for low-current operation, can also be configured for temporary isolation. Now available in Lithium-ion versions, the ML-Series supports lithium iron phosphate (LiFePO4) batteries. All Blue Sea Systems relays available at IES (Industry Electric) meet ISO, SAE, and IP standards, ensuring durability and high performance
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BLUE SEA SYSTEM RELAYSBlue Sea Systems 7623100-BSS, ML-ACR Automatic Charging Relay w/ Manual Control, Bi-Stable, Deutsch DTM/Amphenol ATM Connector, 500 Amp, 24V
Enhance Battery Management with Blue Sea Systems Automatic Charging Relays  7623100-BSS MANUAL  24 VOLT
The Blue Sea Systems ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles
- Live Current Switching: 300A @ 12V DC-10,000 Cycles
- Continuous Rating: 500A
- Terminal stud: 3/8″-16 (M10)
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75987 and 75995
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jets
- Charging relay accessories can be found here.
- Download data sheet here.
Download instructions here.
$176.43Enhance Battery Management with Blue Sea Systems Automatic Charging Relays  7623100-BSS MANUAL  24 VOLT
The Blue Sea Systems ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles
- Live Current Switching: 300A @ 12V DC-10,000 Cycles
- Continuous Rating: 500A
- Terminal stud: 3/8″-16 (M10)
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75987 and 75995
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jets
- Charging relay accessories can be found here.
- Download data sheet here.
Download instructions here.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems ML-Series Automatic Charging Relays – 24V – 7621100-BSS
Enhance Battery Management with Blue Sea Systems Automatic Charging Relays # 762110-BSÂ Â 24 VOLT
The Blue Sea Systems ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles
- Live Current Switching: 300A @ 12V DC-10,000 Cycles
- Continuous Rating: 500A
- Terminal stud: 3/8″-16 (M10)
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75987 and 75995
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jet
- Download data sheet here.
Download instructions here.
Download wiring diagram here.
$287.44Enhance Battery Management with Blue Sea Systems Automatic Charging Relays # 762110-BSÂ Â 24 VOLT
The Blue Sea Systems ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles
- Live Current Switching: 300A @ 12V DC-10,000 Cycles
- Continuous Rating: 500A
- Terminal stud: 3/8″-16 (M10)
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75987 and 75995
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jet
- Download data sheet here.
Download instructions here.
Download wiring diagram here.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems 7622-BSS, ML-ACR Automatic Charging Relay with Manual Control, 500 Amp, 12V
- Voltage Rating
- 12V DC
- Amperage Rating
- 500 Amp
- Style
- ML Series
- Part #Â Â 7622-BS
The Blue Sea Systems MANUAL CONTROLÂ ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles.
- Live Current Switching: 300A @ 12V DC-10,000 Cycles.
- Continuous Rating: 500A.
- Terminal stud: 3/8″-16 (M10).
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75985 and 75993
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jets.
- Download data sheet here.
Download instructions here.
Download wiring diagram here.
$269.44- Voltage Rating
- 12V DC
- Amperage Rating
- 500 Amp
- Style
- ML Series
- Part #Â Â 7622-BS
The Blue Sea Systems MANUAL CONTROLÂ ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles.
- Live Current Switching: 300A @ 12V DC-10,000 Cycles.
- Continuous Rating: 500A.
- Terminal stud: 3/8″-16 (M10).
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75985 and 75993
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jets.
- Download data sheet here.
Download instructions here.
Download wiring diagram here.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems ML-Series Automatic Charging Relays – 12VOLT-7620-BSS
Optimize Battery Performance and Ensure Protection with Blue Sea Systems ML-Series Automatic Charging Relays- 12 V-Â Â Part #7620-BSS
The Blue Sea Systems ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles.
- Live Current Switching: 300A @ 12V DC-10,000 Cycles.
- Continuous Rating: 500A.
- Terminal stud: 3/8″-16 (M10).
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75985 and 75993
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jets.
- Download data sheet here.
Download instructions here.
Download wiring diagram here.
$154.67Optimize Battery Performance and Ensure Protection with Blue Sea Systems ML-Series Automatic Charging Relays- 12 V-Â Â Part #7620-BSS
The Blue Sea Systems ML-Series Automatic Charging Relays are high-capacity 500A magnetic latching (bi-stable) relays designed for advanced battery management. These relays automatically combine batteries during charging and isolate them during discharging and engine starting, optimizing battery performance and ensuring protection for sensitive electronics. The magnetic latching (ML) design draws minimal current in the ON state, enhancing energy efficiency.
The relays offer configurable Start Isolation (SI) to temporarily isolate house loads from the engine circuit during cranking, protecting delicate electronics from voltage sags. Additionally, the Engine Isolation (EI) function can be configured to isolate two engines while both are running, safeguarding engine electronics and maximizing alternator output. For added safety and control, the manual override knob allows for operation with or without power and includes a LOCKED OFF setting for secure servicing.
These relays sense charging on two battery banks and provide an LED output for remote indication of switch state, compatible with optional LED or Remote Control Contura Switch with integrated LED. The 3/8″-16 tin-plated copper studs ensure maximum conductivity and corrosion resistance, while the 7/8″ stud length accommodates multiple cable terminals. Durable one-piece stainless steel flange nuts guarantee secure connections, and silver alloy contacts ensure high reliability for live switching.
Products on this page may be available in bulk, please call for a quote
- ML-Coil Function: Bi-Stable. Includes Remote Control Contura Switch
- Switching Cycles: 100,000 Cycles.
- Live Current Switching: 300A @ 12V DC-10,000 Cycles.
- Continuous Rating: 500A.
- Terminal stud: 3/8″-16 (M10).
- Control Circuit Connections: Tinned Wire or Deutsch DTM / Amphenol ATM Cable End options
- Manual Control Options: 75985 and 75993
- CE marked, ISO 8846 and SAE J1171 external ignition protection requirements. IP66 – protected against powerful water jets.
- Download data sheet here.
Download instructions here.
Download wiring diagram here.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems 12V Automatic Timer Disconnect 7615-BSS
Optimize Battery Systems with Blue Sea Systems 12V Automatic Timer Disconnect 7615-BSS
The Blue Sea Systems 12V Automatic Timer Disconnect offers four powerful functions to manage battery systems effectively: Timer Disconnect, Low Voltage Disconnect, Automatic Charging Relay, and Solenoid. These features are designed to optimize battery performance and protect power systems from unnecessary drain.
The Timer Disconnect function triggers the relay to connect battery power to devices, and once the signal is removed, the timer starts, disconnecting devices after a preset time ranging from 15 minutes to 4 hours. The optional charge sense feature can be used instead of a 12V signal to simplify wiring. The Low Voltage Disconnect feature automatically disconnects devices when battery voltage drops below a set threshold (11V, 11.5V, or 12V), preserving battery life and preventing over-discharge. It can work alongside the Timer Disconnect for even better power management.
The Automatic Charging Relay combines two battery banks for charging from a single source, automatically isolating them when charging stops or during discharge. This function is particularly useful for auxiliary batteries that are AGM or larger than the starting battery. Lastly, the Solenoid provides instant connection or disconnection of the relay with a 12V signal, without any time delay, allowing for manual control of battery connections.
Products on this page may be available in bulk, please call for a quote
- Select from four methods to manage your batteries: Timer Disconnect, Low Voltage Disconnect, Automatic Charging Relay or Solenoid.
- Nominal Voltage: 12V DC. Input Voltage Range: 9.5-16V.
- Rating: 120A (continuous) and 210A (intermittent: 5 min.)
- Amperage Operating Current: 175mA (combined), 4mA (open).
- Time Range: 15 minutes – 4 hours.
- Terminal Stud Size 3/8″-16 (M10). Terminal Stud Torque: 140 in-lb (15.82 Nm).
- Maximum Cable Size: 1/0 AWG (50mm²). Cable Size to Meet Current Ratings: 1 AWG (50mm²).
- CE marked, Meets ISO 8846 and SAE J1171 external ignition protection requirements. IP67-protected against immersion up to 1 meter for 30 minutes.
$132.43Optimize Battery Systems with Blue Sea Systems 12V Automatic Timer Disconnect 7615-BSS
The Blue Sea Systems 12V Automatic Timer Disconnect offers four powerful functions to manage battery systems effectively: Timer Disconnect, Low Voltage Disconnect, Automatic Charging Relay, and Solenoid. These features are designed to optimize battery performance and protect power systems from unnecessary drain.
The Timer Disconnect function triggers the relay to connect battery power to devices, and once the signal is removed, the timer starts, disconnecting devices after a preset time ranging from 15 minutes to 4 hours. The optional charge sense feature can be used instead of a 12V signal to simplify wiring. The Low Voltage Disconnect feature automatically disconnects devices when battery voltage drops below a set threshold (11V, 11.5V, or 12V), preserving battery life and preventing over-discharge. It can work alongside the Timer Disconnect for even better power management.
The Automatic Charging Relay combines two battery banks for charging from a single source, automatically isolating them when charging stops or during discharge. This function is particularly useful for auxiliary batteries that are AGM or larger than the starting battery. Lastly, the Solenoid provides instant connection or disconnection of the relay with a 12V signal, without any time delay, allowing for manual control of battery connections.
Products on this page may be available in bulk, please call for a quote
- Select from four methods to manage your batteries: Timer Disconnect, Low Voltage Disconnect, Automatic Charging Relay or Solenoid.
- Nominal Voltage: 12V DC. Input Voltage Range: 9.5-16V.
- Rating: 120A (continuous) and 210A (intermittent: 5 min.)
- Amperage Operating Current: 175mA (combined), 4mA (open).
- Time Range: 15 minutes – 4 hours.
- Terminal Stud Size 3/8″-16 (M10). Terminal Stud Torque: 140 in-lb (15.82 Nm).
- Maximum Cable Size: 1/0 AWG (50mm²). Cable Size to Meet Current Ratings: 1 AWG (50mm²).
- CE marked, Meets ISO 8846 and SAE J1171 external ignition protection requirements. IP67-protected against immersion up to 1 meter for 30 minutes.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems SI-ACR Automatic Charging Relay
Efficient Dual Battery Management with Blue Sea Systems SI-ACR Relay
The Blue Sea Systems SI-ACR Automatic Charging Relay is engineered to provide seamless management of dual battery systems, automatically combining batteries during charging and isolating them during discharging or engine starting. With a robust 120A continuous rating, it is capable of supporting high-output alternators. The 12V/24V DC auto-ranging voltage input ensures versatility, while its ability to sense charging on two battery banks ensures efficient power distribution.
This relay features side and bottom knockouts for flexible cable connections, while the clip-on cover insulates terminal connections for added safety. The durable 3/8″-16 (M10) terminal studs can accommodate multiple cable terminals, and the one-piece stainless steel flange nuts guarantee secure and reliable connections. An integrated LED provides instant status updates on the ACR’s operation, and quick-connect terminals simplify grounding and optional feature setup.
The standout Start Isolation feature temporarily isolates house loads from the engine circuit during cranking, protecting sensitive electronics from voltage sags and spikes. Designed for reliability, the SI-ACR meets CE, ISO 8846, UL 1500, and SAE J1171 external ignition protection standards, and is rated IP67, providing protection against immersion up to 1 meter for 30 minutes..
Products on this page may be available in bulk, please call for a quote
- Intermittent Rating: 5 minutes, 210A
- Continuous Rating: 120A
- (Combine) Amperage Operating Current: 175mA. (Open) Amperage Operating Current: 15mA.
- Nominal Voltage: 12V/24V
- Cable Size to Meet Current Ratings: 1 AWG (50mm²). Maximum Cable Size: 1/0 AWG (50mm²).
- Terminal Stud Size: 3/8″-16 (M10)
- CE marked, ISO 8846. Meets UL 1500 and SAE J1171 external ignition protection requirements. IP67 – protected against immersion up to 1 meter for 30 minutes.
$117.44Efficient Dual Battery Management with Blue Sea Systems SI-ACR Relay
The Blue Sea Systems SI-ACR Automatic Charging Relay is engineered to provide seamless management of dual battery systems, automatically combining batteries during charging and isolating them during discharging or engine starting. With a robust 120A continuous rating, it is capable of supporting high-output alternators. The 12V/24V DC auto-ranging voltage input ensures versatility, while its ability to sense charging on two battery banks ensures efficient power distribution.
This relay features side and bottom knockouts for flexible cable connections, while the clip-on cover insulates terminal connections for added safety. The durable 3/8″-16 (M10) terminal studs can accommodate multiple cable terminals, and the one-piece stainless steel flange nuts guarantee secure and reliable connections. An integrated LED provides instant status updates on the ACR’s operation, and quick-connect terminals simplify grounding and optional feature setup.
The standout Start Isolation feature temporarily isolates house loads from the engine circuit during cranking, protecting sensitive electronics from voltage sags and spikes. Designed for reliability, the SI-ACR meets CE, ISO 8846, UL 1500, and SAE J1171 external ignition protection standards, and is rated IP67, providing protection against immersion up to 1 meter for 30 minutes..
Products on this page may be available in bulk, please call for a quote
- Intermittent Rating: 5 minutes, 210A
- Continuous Rating: 120A
- (Combine) Amperage Operating Current: 175mA. (Open) Amperage Operating Current: 15mA.
- Nominal Voltage: 12V/24V
- Cable Size to Meet Current Ratings: 1 AWG (50mm²). Maximum Cable Size: 1/0 AWG (50mm²).
- Terminal Stud Size: 3/8″-16 (M10)
- CE marked, ISO 8846. Meets UL 1500 and SAE J1171 external ignition protection requirements. IP67 – protected against immersion up to 1 meter for 30 minutes.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems m-ARC Automatic Charging Relay
Efficient Battery Management with Blue Sea Systems m-ACR Automatic Charging Relay
The Blue Sea Systems m-ACR Automatic Charging Relay is designed for seamless battery management, automatically combining batteries during charging and isolating them when discharging or starting the engine. With a continuous 65A rating and 12V/24V DC auto-ranging voltage input, this ACR senses charging on two battery banks, ensuring efficient and reliable power distribution. Its versatile design allows surface, rear, or front panel mounting, and the snap-on cover insulates terminal connections for added safety.
The m-ACR features integrated LED indicators for real-time status updates, quick-connect terminals for easy grounding, and an optional Start Isolation function. This feature temporarily isolates house loads from the engine circuit during cranking, protecting sensitive electronics from voltage sags and spikes. Constructed with one-piece stainless flange nuts, this relay ensures safe and secure terminal connections, providing peace of mind in demanding conditions.
- Intermittent Rating: 5 minutes, 115A
- Continuous Rating: 65A
- (Combine) Amperage Operating Current: 90mA. (Open) Amperage Operating Current: 15mA.
- Nominal Voltage: 12V/24V DC
- Cable Size to meet current ratings: AWG (16mm²). Maximum Cable Size: 1/0 AWG (50mm²).
- Terminal Stud Size: 1/4″-20 (M6). Terminal Stud Length: 7/16″ (11 mm).
- CE Marked, ISO 8846. Meets SAE J1171 external ignition protection requirements. IP67 – protected against immersion up to 1 meter for 30 minutes.
$71.44Efficient Battery Management with Blue Sea Systems m-ACR Automatic Charging Relay
The Blue Sea Systems m-ACR Automatic Charging Relay is designed for seamless battery management, automatically combining batteries during charging and isolating them when discharging or starting the engine. With a continuous 65A rating and 12V/24V DC auto-ranging voltage input, this ACR senses charging on two battery banks, ensuring efficient and reliable power distribution. Its versatile design allows surface, rear, or front panel mounting, and the snap-on cover insulates terminal connections for added safety.
The m-ACR features integrated LED indicators for real-time status updates, quick-connect terminals for easy grounding, and an optional Start Isolation function. This feature temporarily isolates house loads from the engine circuit during cranking, protecting sensitive electronics from voltage sags and spikes. Constructed with one-piece stainless flange nuts, this relay ensures safe and secure terminal connections, providing peace of mind in demanding conditions.
- Intermittent Rating: 5 minutes, 115A
- Continuous Rating: 65A
- (Combine) Amperage Operating Current: 90mA. (Open) Amperage Operating Current: 15mA.
- Nominal Voltage: 12V/24V DC
- Cable Size to meet current ratings: AWG (16mm²). Maximum Cable Size: 1/0 AWG (50mm²).
- Terminal Stud Size: 1/4″-20 (M6). Terminal Stud Length: 7/16″ (11 mm).
- CE Marked, ISO 8846. Meets SAE J1171 external ignition protection requirements. IP67 – protected against immersion up to 1 meter for 30 minutes.
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BLUE SEA SYSTEM RELAYSBlue Sea Systems Battery Link(TM) ACR Automatic Charging Relay
Efficient Dual Battery Management with the Blue Sea Systems Battery-Link ACR
The Blue Sea Systems Battery-Link™ ACR Automatic Charging Relay is a high-performance solution for managing dual battery banks, automatically sharing a single charge source with the auxiliary battery. Featuring a continuous 120A rating, it is built to support high-output alternators and handle demanding charging needs. The 12V/24V DC auto-ranging voltage input ensures compatibility with various systems, while its ability to sense charging on two battery banks ensures efficient and balanced power distribution.
Designed for versatility and durability, the Battery-Link™ ACR includes side and bottom knockouts for cable connections and robust 3/8″-16 (M10) terminal studs that accommodate multiple cable terminals. The one-piece stainless steel flange nuts ensure safe and secure connections, while the integrated LED provides a clear indication of the ACR’s operational status. With quick-connect terminals for ground and optional features, installation is streamlined.
A key feature is the Optional Auxiliary Battery Priority function, which extends the alternator charge to the auxiliary battery while the engine is running, allowing for longer use of auxiliary loads. This relay is designed to meet stringent safety and protection standards, with an IP67 rating (immersion up to 1 meter for 30 minutes) and compliance with CE, ISO 8846, UL 1500, and SAE J1171 external ignition protection requirements.
- Intermittent Rating: 5 minutes, 210A
- Continuous Rating: 120A
- (Combine) Amperage Operating Current: 175mA. (Open) Amperage Operating Current: 15mA.
- Nominal Voltage: 12V/24V DC
- Cable Size to Meet Ratings: 1 AWG (50mm²). Maximum Cable Size: 1/0 AWG (50mm²).
- Terminal Stud Size: 3/8″-16 (M10)
- Maximum Battery Size: 850 CCA
- CE marked, ISO 8846. Meets UL 1500 and SAE J1171 external ignition protection requirements. IP67 – protected against immersion up to 1 meter for 30 minutes.
$117.49Efficient Dual Battery Management with the Blue Sea Systems Battery-Link ACR
The Blue Sea Systems Battery-Link™ ACR Automatic Charging Relay is a high-performance solution for managing dual battery banks, automatically sharing a single charge source with the auxiliary battery. Featuring a continuous 120A rating, it is built to support high-output alternators and handle demanding charging needs. The 12V/24V DC auto-ranging voltage input ensures compatibility with various systems, while its ability to sense charging on two battery banks ensures efficient and balanced power distribution.
Designed for versatility and durability, the Battery-Link™ ACR includes side and bottom knockouts for cable connections and robust 3/8″-16 (M10) terminal studs that accommodate multiple cable terminals. The one-piece stainless steel flange nuts ensure safe and secure connections, while the integrated LED provides a clear indication of the ACR’s operational status. With quick-connect terminals for ground and optional features, installation is streamlined.
A key feature is the Optional Auxiliary Battery Priority function, which extends the alternator charge to the auxiliary battery while the engine is running, allowing for longer use of auxiliary loads. This relay is designed to meet stringent safety and protection standards, with an IP67 rating (immersion up to 1 meter for 30 minutes) and compliance with CE, ISO 8846, UL 1500, and SAE J1171 external ignition protection requirements.
- Intermittent Rating: 5 minutes, 210A
- Continuous Rating: 120A
- (Combine) Amperage Operating Current: 175mA. (Open) Amperage Operating Current: 15mA.
- Nominal Voltage: 12V/24V DC
- Cable Size to Meet Ratings: 1 AWG (50mm²). Maximum Cable Size: 1/0 AWG (50mm²).
- Terminal Stud Size: 3/8″-16 (M10)
- Maximum Battery Size: 850 CCA
- CE marked, ISO 8846. Meets UL 1500 and SAE J1171 external ignition protection requirements. IP67 – protected against immersion up to 1 meter for 30 minutes.