Blue Sea Systems Solenoid ML 500A 12V ACR With Manual Control DTM

ML-ACR Automatic Charging Relay Manual 12V

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

Features

• Manual control switch provides an added level of safety allowing control with or without power, and offering LOCK OFF capability for servicing
• 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

Specifications

• Control Circuit Connection: Deutsch DTM / Amphenol ATM
• Manual Control: Yes
• Mounting: 10
• Start Assist: Yes
• Start Isolation: Yes
• Amperage Operating Current: 13mA 
• Amperage Operating Current when changing state: <7.0A
• Continuous Rating: 500A
• Intermittent Rating: 700A (5 min)
• Cranking Rating 30 sec: 1450A DC
• Cable Size to Meet Ratings: 4/0 AWG x 2
• Live Current Switching: 300A @ 12V DC
• Switching Cycles: 100000
• Terminal Ring Diameter Clearance: 1.18in (29.97 mm)
• Terminal Stud Length: 1.50in (38.1 mm)
• Terminal Stud Size3/8" - 16 (M10)
• Nominal Voltage: 12V DC
• Engine Isolation: Yes
• Terminal Stud Torque: 140 in-lb (15.82 Nm)

Relay Contact Position

Dimension Drawing

Technical Files

ML-ACR Troubleshooting Guide

ML- ACR Automatic Charging Relays Instructions