BLUE SEA SYSTEMS 7620B, is an Isolation Relay 12 V, 500 AMP magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries during discharge and when starting the engine  ;(excl. 2145 switch).
Features
- Includes ML series remote control Contura Switch PN 2146
- Automatically handles the charging of two large battery banks
- Allows paralleling of battery banks for emergency starting
- 500 Amp continuous rating to support high power generators
- Magnetic Latch (ML) —ACR draws very low current (<40mA to monitor terminal voltage) in "ON" or "OFF" position and draws moderate current for very short time when state changes
- Dual sensing - sensing loads on both battery banks
- Start Isolation (SI) - can be configured to temporarily isolate house loads from the motor circuit during engine cranking to protect sensitive electronics
- Engine Isolation (EI) - can be configured to isolate two engines while both are running to protect engine electronics and maximize generator output
- Detects charge on two battery banks
- LED output for remote connection when batteries are combined, isolated, in voltage lock or in starting or motor isolation
- 3/8 "-16 tin plated copper studs for maximum conductivity and corrosion resistance
- 7/8 " 22 mm) pin length accepts multiple cable connections
- Silver alloy contacts provide high reliability for switching power
- Label recesses for circuit identification