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Automatic Charging Relays ML-ACRs

ML-ACR Automatic Charging Relay with Manual Control - 24V DC 500A

7623

500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting 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 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

MSRP: $291.99

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Specifications
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	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	SPEC_HEADER
Combine 30 sec	27.0V
Combine 90 sec	26.0V
Open 10 sec	24.7V
Open 30 sec	25.5V
Open High	32.4V
Weight	2.10lb (0.95 kg)

Included
Qty	PN	Product
1	2146	SPDT Remote Control Contura Switch - ON-OFF-ON

Optional Accessories
	1147	Remote Control Panel
	1520	360 Panel Blank ML-Contura Switch
	9160	ML Series Link Bus

Meets the following Regulatory Specifications

Remote Battery Management and ACR SubSystem
Remote Battery Management and ACR SubSystem 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.

Remote Battery Management and ACR SubSystem

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.