Blue Sea Systems 7621100 ML ACR Charging Relay 24V 500A with Deutsch Connector

7621100 ML ACR Charging Relay 24V 500A with Deutsch Connector

500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine.

Features:

• 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 sensingsenses 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: Deutsch DTM
• Nominal Voltage: 24VDC
• Manual Control: No
• Engine Isolation: Yes
• Mounting: #10
• Start Assist: Yes
• Start Isolation: Yes
• 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 30 Seconds: 1450A DC
• Cable Size to Meet Ratings: 2x (4/0)
• Live Current Switching: 300A@12VDC
• Master Control Switch Capability: No
• Switching Cycles: 100,000
• Terminal Ring Diameter Clearance: 1.18" (29.97 mm)
• Terminal Stud Length: 1.50" (38.1 mm)
• Terminal Stud Size: 3/8" - 16 (M10)

The Blue Sea Systems 7621100 ML ACR Charging Relay is a high-capacity, 24VDC magnetic latching (bi-stable) relay designed to efficiently manage dual battery systems in demanding automotive and marine applications. It automatically combines batteries during charging, ensuring optimal power distribution, and isolates them during discharging or engine start to protect your electrical system. This relay's robust 500 Amp continuous rating supports high-output alternators, making it suitable for heavy-duty setups. Its magnetic latch technology consumes very low current in either state, providing reliable operation with minimal power draw, while its dual sensingsenses capability ensures accurate charging management on both battery banks. The relay also features configurable start and engine isolation functions, which can be tailored to protect sensitive electronics during engine cranking or to isolate multiple engines during operation, maximizing overall system safety and efficiency. The integrated LED indicators allow remote monitoring of battery status, isolation states, and voltage lockouts for quick diagnostics. Engineered with durable, corrosion-resistant components including tin-plated copper studs and silver alloy contacts, it ensures optimal conductivity and long-term reliability. The relay's compact design is compatible with #10 mounting and includes circuit identification recesses for easy installation and maintenance. The Deutsch DTM control connection simplifies wiring, and the relay's high switching cycle count guarantees longevity in demanding environments. With a maximum switching current of 300A at 12VDC, and a 3/8"-16 terminal stud size and length for secure cable connections, the Blue Sea Systems 7621100 ML ACR relay is a dependable choice for managing complex battery configurations in marine, RV, and commercial vehicle applications.

Features:

• Automatically manages the charging of two large battery banks

• Allows paralleling of battery banks for emergency starting

• Supports high-output alternators with a 500 Amp continuous rating

• Magnetic Latch technology draws very low current (<40mA) in both states

• Dual sensingsenses for accurate charge management on both banks

• Configurable Start Isolation (SI) for engine cranking protection

• Configurable Engine Isolation (EI) to protect engine electronics and maximize alternator output

• LED indicators remotely display battery status, isolation, and voltage lockout

• Constructed with tin-plated copper studs and silver alloy contacts for high conductivity and corrosion resistance

• Durable design with circuit identification recesses for easy installation