Blue Sea Systems ML Series Automatic Charging Relay with Manual Control – 500A
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
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 Manual Control Yes Engine Isolation Yes Mounting #10 Start Assist Yes Start Isolation Yes Amperage Operating Current 13mA Cranking Rating 10 sec 2500A Cranking Rating 1 min 1100A Switching Cycles 100000 Wire Size 20 AWG Part NumberNominal VoltageTerminal Stud SizeContinuous RatingControl Circuit ConnectionWeight BSS-7622 12V DC 3/8" - 16 (M10) 500A Tinned Wire 0.93kg BSS-7623 24V DC 3/8" - 16 (M10) 500A Tinned Wire 0.95kg