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ML-ACR Automatic Charging Relay Manual 24V

ML-ACR Automatic Charging Relay Manual 24V


Part Number:  7623100B
Brand:  Blue Sea Systems
Product:  Relay
Amps (A):  400-500


Estimated Delivery Time: 5 to 10 days

Control Circuit ConnectionDeutsch DTM*
Nominal Voltage24V DC
Manual Control**Yes
Engine Isolation***Yes
Start Assist****Yes
Start Isolation*****Yes
Amperage Operating Current13mA******
Amperage Operating Current when changing state<7.0A
Terminal Stud Torque140 in-lb (15.82 Nm)
Continuous Rating*******500A
Intermittent Rating********700A (5 min)
Cranking Rating 30 sec*********1450A DC
Cable Size to Meet Ratings4/0 AWG x 2
Live Current Switching300A @ 12V DC
Switching Cycles100000
Terminal Ring Diameter Clearance1.18in (29.97 mm)
Terminal Stud Length1.50in (38.1 mm)
Terminal Stud Size3/8' - 16 (M10)
Relay Contact Position 
Combine 30 sec27.0V
Combine 90 sec26.0V
Open 10 sec24.7V
Open 30 sec25.5V
Open High32.4V

*Provided on bulk units

**Manual control switch provides an added level of safety allowing control with or without power and offering LOCK OFF capability for servicing

***Condition: Two engines are running

  • One relay is open and one relay is closed
  • Engine 1 Start and Engine 2 Start batteries are isolated to protect engine electronics

****Condition: Engine starting

  • Relay is closed combining batteries
  • Batteries are combined to share power in the event of a low start battery

*****Condition: Engine starting

  • Relay is open isolating batteries
  • Batteries are isolated to protect sensitive electronics from voltage sags and spikes

******@ 25C nominal VDC

*******The maximum current a switch is designed to conduct for an indefinite period

********The maximum amount of current a switch is designed to carry for a minimum of a designated period of time

*********Normally associated with 'cranking current' which is the current required by the starter circuit prior to engine starting. The cranking current varies significantly during the starting cycle. Initially, there is a large surge of current required to overcome the inertia and compression of the engine. This surge can be two to four times the average cranking current. Once the engine is turning there are peaks and valleys as the pistons go through the compression and exhaust cycles. The cranking current rating is used for sizing batteries, cables, and battery switches

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