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Blue Sea 7622 ML-ACR Automatic Charging Relay with Manual Control - 12V DC 500A

A 500 Amp Magnetic Latching (bi-stable) Charging Relay automatically combines batteries during charging and isolates the batteries when discharging, and when starting the engine.

Manual control switch provides an added level of safety allowing control with or without power and offering LOCK OFF capability for servicing
Includes ML-Series Remote Control Contura Switch PN 2146
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 a 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
LED output to remotely indicate when batteries are combined, isolated, in voltage lockout, or in Start or Engine isolation
3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance
7/8" (22mm) stud length accepts multiple cable terminals
Silver alloy contacts provide high reliability for switching live loads
Label recesses for circuit identification

The ML-ACR (Automatic Charging Relay) and ML-RBS (Remote Battery Switch), when paired, offer complete battery management of large battery banks with the push of a button.

In addition to automatically sharing the charge from an engine's alternator between the start and auxiliary battery, the ML-ACR control switch provides momentary battery combining to assist with starting in the event of a low engine battery.

Multiple remote battery switches can be easily connected to the ML-ACR with the optional Paralleling Link Bus for a complete remote battery management Subsystem.

Blue Sea 7622 ML– ACR Automatic Charging Relay with Manual Control Manual

Blue Sea 7622 ML-ACR Wiring Diagram

Blue Sea ML-ACR Diagnostic Chart

Blue Sea ML-ACR Brochure

BS7622 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

<7.0A

Terminal Stud Torque

140 in-lb (15.82 Nm)

Continuous Rating

500A

Intermittent Rating

700A (5 min)

Cranking Rating 10 sec

2500A

Cranking Rating 1 min

1100A

Cable Size to Meet Ratings

4/0 AWG x 2

Live Current Switching

300A @ 12V DC

Switching Cycles

100000

Terminal Ring Diameter Clearance

1.12in (28.45 mm)

Terminal Stud Length

1.50in (38.1 mm)

Terminal Stud Size

3/8" - 16 (M10)

Wire Size

20 AWG

Relay Contact Position

Combine 30 sec

13.5V

Combine 90 sec

13.0V

Open 10 sec

12.35V

Open 30 sec

12.75V

Open High

16.2V

Weight

2.06lb (0.93 kg)

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Blue Sea 7622 ML-ACR Automatic Charging Relay with Manual Control 12V DC 500AView all products in Battery Switches

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