Blue Sea ML-ACR Automatic Charging Relay 24vDC 500A

Blue Sea Systems ML-ACR Automatic Charging Relay – 24V DC 500A

Model: 7621-BSS

Features:

• 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 (
• 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

Specifications

Control Circuit Connection	Tinned Wire
Nominal Voltage	24V 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
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 degrees C
Maximum Operating Temperature	60 degrees 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 24v
• SPDT Remote Control Contura Switch – ON-OFF-ON