ML SERIES 12V 500A AUTO CHARGE RELAY
MANUAL CONTROL SWITCH • DUAL SENSING • ENGINE ISOLATION
Brand: Blue Sea Systems
Reference No. BS-7622B
ML-ACR Automatic Charging Relay with Manual Control – 12V DC 500A
BS-7622:
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.
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
ML-ACR Automatic Charging Relay with Manual Control- 12V DC 500A | |
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 | 12.75 |
Open High | 16.2V |
Weight | 0.93 kg |