Blue Sea ML-ACR Automatic Charging Relay 12vDC 500A

Blue Sea ML-ACR Automatic Charging Relay 12vDC 500A

Blue Sea Systems ML-ACR Automatic Charging Relay - 12V DC 500A

• Automatically manages the charging of two large battery banks


• Allows paralleling of battery banks for emergency starting


• 500 Ampere continuous rating to support high-output alternators


• Magnetic Latch (ML)—ACR draws very low current (<40mA to monitor terminal voltage) in the "ON" or "OFF" states, and draws moderate current for very short time when changing state


• Dual sensing—senses charge on both battery banks


• Start Isolation (SI)—can be configured for temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics


• Engine Isolation (EI)—can be configured for isolation of two engines while both are running to protect engine electronics and maximize alternator output


• Senses charging on two battery banks

500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine

Control Circuit Connection
Tinned Wire

Nominal Voltage
12V DC

Manual Control
No

Engine Isolation
Yes

Mounting
#10

Start Assist
Yes

Start Isolation
Yes

Amperage Operating Current
13mA

Amperage Operating Current when changing state
<7.0A

Terminal Stud Torque
140 in-lb (15.82 Nm)

Continuous Rating
500A

Intermittent Rating
700A (5 min)

Cranking Rating 30 sec
1450A DC

Minimum Operating Temperature
-10° C

Maximum Operating Temperature
60° C

Cable Size to Meet Ratings
4/0 AWG x 2

Live Current Switching
300A @ 12V DC

Stud Material
Tinned Copper

Switching Cycles
100000

Terminal Ring Diameter Clearance
Terminal Ring Diameter Clearance

Terminal Stud Length
1.50in (38.1 mm)

Terminal Stud Size
3/8" - 16 (M10)

Wire Size
20 AWG

What's in the Box:

• ML-ACR Automatic Charging Relay


• SPDT Remote Control Contura Switch - ON-OFF-ON