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Blue Sea Systems

Blue Sea Ml-acr Automatic Charging Relay With Manual Control 24vdc 500a

Blue Sea Ml-acr Automatic Charging Relay With Manual Control 24vdc 500a

Regular price $332.84
Regular price Sale price $332.84
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Blue Sea Systems ML-ACR Automatic Charging Relay with Manual Control - 24V DC 500A

Model: 7623-BSS
  • 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
  • Manual control switch provides an added level of safety allowing control with or without power, and offering LOCK OFF capability for servicing

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 24V DC
Manual Control Yes
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 with manual Control 24v
  • SPDT Remote Control Contura Switch - ON-OFF-ON
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