Blue Sea 7623 - ML-ACR Automatic Charging Relay with Manual Control, 24V DC 500A

Blue Sea 7623 - ML-ACR Automatic Charging Relay with Manual Control, 24V DC 500A

The Blue Sea 7623 ML-ACR Automatic Charging Relay with Manual Control is a highly reliable and versatile component for managing the charging and isolation of battery banks in 24V DC systems. Designed for high-output alternators and heavy-duty applications, this 500A magnetic latching (bi-stable) relay ensures seamless operation during both charging and discharging. The device combines two batteries automatically during charging and isolates them when discharging or starting the engine, while also offering an added layer of safety with its manual control switch. This manual switch allows users to control the relay with or without power and offers a "LOCK OFF" capability for safe servicing. The ML-ACR relay also features dual sensing to monitor both battery banks and supports paralleling for emergency starts, making it an ideal solution for large battery systems with high demands.

Built to handle high currents, the Blue Sea 7623 is rated for 500A continuous operation and has an intermittent rating of 700A for 5 minutes. It also supports high cranking currents (up to 1450A for 30 seconds) necessary for engine startups. The relay’s tinned copper studs provide maximum conductivity and resistance to corrosion, ensuring long-lasting performance even in demanding conditions. The system includes a remote control Contura switch (PN 2146) for convenient operation. With additional features like start isolation to protect sensitive electronics, engine isolation for protecting engine electronics during simultaneous engine operation, and LED indicators to show the status of the batteries, the Blue Sea 7623 ML-ACR is a robust and efficient choice for anyone looking to optimize the charging and protection of dual battery systems in 24V DC applications.

• Nominal Voltage: 24V DC
• Continuous Rating: 500A
• Intermittent Rating: 700A (5 min)
• Cranking Rating: 1450A (30 sec)
• Start Isolation: Yes (isolates batteries during engine start)
• Engine Isolation: Yes (isolates engines when both are running)
• Operating Current: 13mA @ 25°C (nominal)
• Operating Current When Changing State: <7.0A
• Terminal Stud Torque: 140 in-lb (15.82 Nm)
• Temperature Range: -10° C to 60° C
• Weight: 2.10lb (0.95 kg)