✨ Get 20% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Durable Blue Sea Ml-acr Automatic Charging Relay 12vdc 500a Holiday Cheer Edition [4KqCoi73]

$44.99 $143.99 -69%

Blue Sea Systems ML-ACR Automatic Charging Relay - 12V DC 500AModel: 7620-BSSAutomatically manages the charging of two large battery banksAllows paralleling of battery banks for emergency starting500 Ampere continuous rating to support high-output al

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

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

Model: 7620-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

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 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

What Our Customers Say

January 11, 2026

Absolutely no complaints!

This is a quality purchase.

- Kathy M..

January 11, 2026

Absolutely no complaints!

This product is a winner.

- Kevin N..

January 11, 2026

Absolutely no complaints!

A very well-made piece of hardware.

- Amelie B..

Write a Review

You Might Also Like

Discover more great products from our collection.

High Jump Standard Telescopic

High Jump Standard Telescopic

(506)
$179.99 $575.99 -69%
Ivory Platinum Tree Houses

Ivory Platinum Tree Houses

(10)
$17.99 $57.99 -69%

Copyright 2026 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY