Blue Sea SI-ACR Automatic Charging Relay 12/24vDC 120A

Blue Sea SI-ACR Automatic Charging Relay 12/24vDC 120A

Blue Sea Systems SI-ACR Automatic Charging Relay - 12/24V DC 120A

• Protects sensitive electronics by temporary isolation of house loads from engine circuit during engine cranking


• Designed for 12 or 24 volt systems


• 12/24 volt auto ranging voltage input


• Hermetically sealed contacts/vaporproof


• Ignition protected—safe for installation aboard gasoline powered boats


• Supports high-output alternators up to 120 Amperes


• Dual sensing

Automatically 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 Plus™ 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.

Nominal Voltage
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)