Blue Sea Systems SI-ACR Automatic Charging Relay - 12/24V DC 120A
Model: 7610-BSSAutomatically combines batteries during charging, isolates batteries when discharging and when starting engines
SI-ACR automatically combines batteries during charging, isolates batteries when discharging and when starting engines. The Dual Circuit PlusTM Battery Switch simplifies the switching of two batteries to OFF or ON while still providing battery isolation between the engine and auxiliary battery. The Combine function can be used to parallel the batteries in the event of a low engine battery.
Specifications| 12V DC 24V DC | |
| Start Isolation | Yes |
| Amperage Operating Current | 175mA (combined) 15mA (open) |
| Terminal Stud Torque | 140 in-lb (15.82 Nm) |
| Continuous Rating | 120A |
| Intermittent Rating | 210A (5 min) |
| Cable Size to Meet Ratings | 1/0 AWG |
| Stud Material | Tinned Copper |
| Terminal Ring Diameter Clearance | 1.12in (28.45 mm) |
| Terminal Stud Length | 0.875in (22.23 mm) |
| Terminal Stud Size | 3/8 - 16 (M10) |
The Navico Group Blue Sea SI-ACR Automatic Charging Relay, part number 7610-BSS, is a component designed for managing power distribution in 12V DC or 24V DC systems. This device automatically combines batteries during charging cycles and isolates them when discharging or during engine startup. Its primary function is to protect sensitive electronics by temporarily isolating house loads from the engine circuit during cranking, preventing voltage drops that could affect critical equipment. With a continuous rating of 120A and an intermittent rating of 210A (5 min), it supports high-output alternators. The relay features hermetically sealed contacts and is ignition protected, making it suitable for environments where vapor protection is necessary, such as gasoline-powered boats. It is intended for IT professionals or system integrators who require reliable battery management and protection in mobile or remote power applications.
This automatic charging relay is designed for compatibility with both 12V DC and 24V DC electrical systems, featuring auto-ranging voltage input.
The Blue Sea SI-ACR has a continuous operating current rating of 120 Amperes. It also supports an intermittent rating of 210A for 5 minutes.
The SI-ACR automatically combines batteries for charging and isolates them during discharge or engine starting. This protects sensitive electronics by temporarily separating house loads from the engine circuit during cranking.
To meet the specified ratings, a cable size of 1/0 AWG is recommended for use with this automatic charging relay.
7610-BSS - Navico Group Blue Sea SI-ACR Automatic Charging Relay 12/24vDC 120A