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Blue Sea Systems Automatic Charging Relay (ACR) is a high-performance 120 Amp continuous rating device designed for 12 or 24 volt DC systems. Featuring auto-ranging voltage input and an integrated LED status indicator, it ensures efficient, automatic battery isolation and charging. With easy installation options and reliable operation, itโs the essential upgrade for managing dual battery setups in automotive and marine applications.





| ASIN | B00BFVGVA6 |
| Best Sellers Rank | 125,929 in Automotive ( See Top 100 in Automotive ) 553 in Car Relays |
| Brand | Blue Sea Systems |
| Coil Resistance | 100 Milliohms |
| Coil Voltage | 24 Volts |
| Connector Type | Quick Connect |
| Connector type | Quick Connect |
| Contact Current Rating | 120 Amps |
| Contact Material | Silver |
| Contact Type | Normally Open |
| Contact material | Silver |
| Contact type | Normally Open |
| Current Rating | 120 Amps |
| Current rating | 120 Amps |
| Customer Reviews | 4.8 out of 5 stars 91 Reviews |
| Included Components | AUTO CHARGE RELAY 120A 12/24V |
| Item Type Name | AUTO CHARGE RELAY 120A 12/24V |
| Manufacturer | Blue Sea Systems |
| Manufacturer Part Number | 7611-BSS |
| Maximum Switching Voltage | 24 Volts |
| Minimum Switching Voltage | 12 Volts (DC) |
| Model Number | 7611 |
| Mounting Type | Tabletop |
| Mounting type | Tabletop |
| Number of Terminals | 2 |
| Operation Mode | Automatic |
| UPC | 632085076115 |
| Wattage | 1440 watts |
R**M
Works
Easy install, does what it states. "House" battery is separated then charges after the motor is running. Good piece of mind product. I didn't buy the combine/off switch. Didn't see much point. If I need to combine I'll use a jumper. I just wanted to separate and charge two batteries. This works.
M**T
Very nice
This was exactly what I needed to charge my cargo trailer battery. Opens on at 13.6v and closes at 12.8v to keep everything isolated. Simple to use and wire.
W**P
Important to isolate batteries and charge them independently of bringing linked together
Easy to install, I added a relay to disconnect it from ground when the battery switch is turned to off
G**Y
It's a relay and takes the place of an isolator
Working great. Just what I needed. Well built and easy install. I'd highly recommend this product. Not only better than an isolator it's less costly and does more.
D**W
Works great
Bought to have my accessory battery charge while running. Thought I got one with start isolation but it wasn't a problem when I was using it. Added a switch on the ground so I have a manual cut off switch if I dont want it on
Trustpilot
1 month ago
2 days ago