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Automatic Charging Relays ML-ACRs

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

7622
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: $274.69
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Specifications
Control Circuit Connection Tinned Wire
Nominal Voltage12V DC
Manual Control Yes
Engine Isolation Yes
Mounting#10
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 Clearance1.12in (28.45 mm)
Terminal Stud Length1.50in (38.1 mm)
Terminal Stud Size3/8" - 16 (M10)
Wire Size20 AWG
Relay Contact PositionSPEC_HEADER
Combine 30 sec13.5V
Combine 90 sec13.0V
Open 10 sec12.35V
Open 30 sec12.75V
Open High16.2V
Weight2.06lb (0.93 kg)
Included
QtyPNProduct
1 2146 SPDT Remote Control Contura Switch - ON-OFF-ON
Optional Accessories
9160 ML Series Link Bus
1147 Remote Control Panel
1520 360 Panel Blank ML-Contura Switch
Meets the following Regulatory Specifications
CE Marked
IP66
ISO 8846
SAE J1428
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.

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