Skip to content
  • 💰 Get the latest and save with our big sale! 💰
  • 💰 Get the latest and save with our big sale! 💰
Blue-sea StoreBlue-sea Store
  • Menu
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Boating
    • Fuses, Circuit Breakers & Accessories
    • Battery Management & Switches
    • Switch Panels & Switches
    • DC Distribution
    • Battery Chargers
    • Boat Instruments
  • Fishing
    • Hooks
    • Jigs & Lures
    • Flashers & Pre-Made Rigs
    • Terminal Tackle
    • Rod Tubes, Bags & Straps
    • Tools
  • Apparel
    • Shirts
    • Hats, Caps & Beanies
    • Gloves
  • RV & Camping
    • Power Supplies & Management
Home / Boating / Battery Management & Switches / Relays
Sale!
Blue Sea ML-ACR Automatic Charging Relay With Manual Control 12vDC 500A

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

$569.00 Original price was: $569.00.$98.99Current price is: $98.99.

SKU: 191372 Categories: Battery Management & Switches, Boating, Relays Tag: Blue Sea
  • Enjoy top quality items for less
  • Sustainable materials, for a better tomorrow.
  • Fast reliable delivery options
  • Your questions, our prompt answers.
Browse
  • Apparel
    • Gloves
    • Hats, Caps & Beanies
    • Shirts
      • Mens Shirts
  • Boating
    • Battery Chargers
      • Smart Battery Chargers
    • Battery Management & Switches
      • Meters & Monitors
      • Relays
      • Switches & Isolators
    • Boat Instruments
      • Voltmeters
    • DC Distribution
    • Fuses, Circuit Breakers & Accessories
      • Circuit Breakers
      • Fuse Holders, Blocks & Boxes
    • Switch Panels & Switches
  • Fishing
    • Flashers & Pre-Made Rigs
      • Flasher Rigs
    • Hooks
      • Bait Hooks
      • Beak / Octopus Hooks
      • Circle / Recurve Hooks
      • Double / Treble Hooks
      • Game Hooks
      • Jigging Hooks
      • Live Bait Hooks
    • Jigs & Lures
      • Jig Accessories
        • Assist Cord
        • Assist Hooks
        • Split & Solid Rings
      • Teasers & Dredges
    • Rod Tubes, Bags & Straps
    • Terminal Tackle
      • Clips
      • Jig Heads
      • Sinkers
        • Other Sinkers
      • Swivels
    • Tools
      • Fishing Gloves
  • RV & Camping
    • Power Supplies & Management
  • Uncategorized
  • Description
  • Reviews (0)

Blue Sea

Blue Sea Systems ML-ACR Automatic Charging Relay with Manual Control – 12V DC 500A

Model: 7622-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
  • 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

Specifications

Control Circuit Connection Tinned Wire
Nominal Voltage 12V 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
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 with manual Control 12v
  • SPDT Remote Control Contura Switch – ON-OFF-ON

Reviews

There are no reviews yet.

Be the first to review “Blue Sea ML-ACR Automatic Charging Relay With Manual Control 12vDC 500A” Cancel reply

Related products

Sale!
Blue Sea 4161 10A Push Button LED Ring Switch Off-(On) Blue Momentary On
Quick View

Boating

Blue Sea 4161 10A Push Button LED Ring Switch Off-(On) Blue Momentary On

$66.99 Original price was: $66.99.$49.57Current price is: $49.57.
Sale!
Blue Sea Push Button Reset Only Quick Connect Circuit Breaker - 7 Amps
Quick View

Boating

Blue Sea Push Button Reset Only Quick Connect Circuit Breaker – 7 Amps

$16.99 Original price was: $16.99.$12.74Current price is: $12.74.
Sale!
Blue Sea M-Series Battery Switch On/Off Black With Knob
Quick View

Battery Management & Switches

Blue Sea M-Series Battery Switch On/Off Black With Knob

$84.99 Original price was: $84.99.$66.29Current price is: $66.29.
Sale!
Blue Sea PowerPost Mini #10-32 Stud
Quick View

Boating

Blue Sea PowerPost Mini #10-32 Stud

$27.50 Original price was: $27.50.$18.70Current price is: $18.70.
Sale!
Blue Sea 5028 6-Gang Fuse Block ST ATO/ATC With Cover
Quick View

Boating

Blue Sea 5028 6-Gang Fuse Block ST ATO/ATC With Cover

$99.99 Original price was: $99.99.$79.99Current price is: $79.99.
Sale!
Blue Sea 4160 10A Push Button LED Ring Switch Off-On Blue
Quick View

Boating

Blue Sea 4160 10A Push Button LED Ring Switch Off-On Blue

$66.99 Original price was: $66.99.$48.90Current price is: $48.90.
Sale!
Blue Sea PowerPost Plus 3/8in Stud
Quick View

Boating

Blue Sea PowerPost Plus 3/8in Stud

$69.99 Original price was: $69.99.$49.69Current price is: $49.69.
Sale!
Blue Sea 4162 10A Push Button LED Ring Switch Off-On Red
Quick View

Boating

Blue Sea 4162 10A Push Button LED Ring Switch Off-On Red

$66.99 Original price was: $66.99.$48.23Current price is: $48.23.
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping & Returns
  • Term and Conditions
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
Signup for Newsletter

Subscribe to be the first to hear about our exclusive offers and latest arrivals

    Copyright 2026 © www.blueseafishs.com
    • Boating
      • Fuses, Circuit Breakers & Accessories
      • Battery Management & Switches
      • Switch Panels & Switches
      • DC Distribution
      • Battery Chargers
      • Boat Instruments
    • Fishing
      • Hooks
      • Jigs & Lures
      • Flashers & Pre-Made Rigs
      • Terminal Tackle
      • Rod Tubes, Bags & Straps
      • Tools
    • Apparel
      • Shirts
      • Hats, Caps & Beanies
      • Gloves
    • RV & Camping
      • Power Supplies & Management
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.