The Blue Sea Systems ML-ACR Automatic Charging Relay, model 7620-BSS, is a top - notch solution for battery management. It automatically handles the charging of two large battery banks and enables battery banks to be paralleled for emergency starting. With a 500 - Ampere continuous rating, it can support high - output alternators. The Magnetic Latch (ML) design ensures very low current draw. Its dual - sensing feature monitors the charge on both battery banks. The Start Isolation (SI) allows for temporary isolation of house loads from the engine circuit during cranking to safeguard sensitive electronics, while the Engine Isolation (EI) can isolate two engines when running to protect engine electronics and boost alternator output. This 500 Amp magnetic latching relay combines batteries during charging and isolates them during discharging and engine starting. Specifications include a tinned wire control circuit connection, 12V DC nominal voltage, and much more.
Using the Blue Sea ML - ACR Automatic Charging Relay is straightforward. First, make sure to connect it properly according to the wiring diagram in the manual. The relay will automatically manage the charging of your two large battery banks. For emergency starting, it allows the battery banks to be paralleled. When starting the engine, if you've configured the Start Isolation, it will temporarily separate the house loads from the engine circuit to protect sensitive electronics. Remember, this relay has a 500 - Ampere continuous rating, so ensure your alternator output is within its capacity. Keep an eye on the operating temperature, which should be between - 10°C and 60°C. For maintenance, check the connections regularly to make sure they are tight and free of corrosion. If you need to replace any parts, refer to the user manual for guidance.
