Features
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
- ML-Series Remote Control Contura Switch PN 2146 available as a seperate item.
- 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 | 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 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 | 27.0V |
Combine 90 sec | 26.0V |
Open 10 sec | 24.7V |
Open 30 sec | 25.5V |
Open High | 32.4V |
Weight | 0.95 kg |