

LITTELFUSE® bistable automatic smart latching relay
Introducing the LITTELFUSE® bistable automatic smart latching relay — an essential component for efficient and reliable marine battery management. Designed to seamlessly connect and disconnect your starting and service battery banks based on your alternator or battery charger status, this smart relay ensures your power system operates smoothly and safely.
- Automatically connects battery banks when the alternator or charger is active and disconnects them when charging stops
- Supports high current loads, ideal for powerful marine inverters and demanding electrical systems
- Allows emergency manual connection of battery banks with a simple switch control
- Extremely low power consumption in both ON and OFF states thanks to the bistable design
- Complies with marine safety standards ISO 8846 and SAE J1171 for reliable operation in harsh environments
- Equipped with a durable Deutsch 6-pin DTM male connector for secure and easy installation
Product Details
• Maximum Capacity: 1500 A for 10 seconds
• Continuous Capacity: 300 A
• Control Current: 40 mA* / 3 A**
• Relay Contact Positions:
Closes within 30 seconds at 27.0 V
• Closes within 90 seconds at 26.0 V
• Opens within 10 seconds at 24.0 V
• Opens within 30 seconds at 25.5 V
• Opens circuit at 32.4 V***
General
In Short
for boaters who depend on their equipment, their knowledge — and the sea itself. For those who maintain, repair, improve, and trust their vessels.

LITTELFUSE® bistable automatic smart latching relay
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