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Automatic Battery Disconnect Switch: Isolated Solenoid with Battery Terminal Covers and Plastic Cover

Automatic Battery Disconnect Switch: Isolated Solenoid with Battery Terminal Covers and Plastic Cover

The versatility of Flaming River’s FR1052 Disconnect Switch allows for multiple installation options based upon user need and vehicle application.

Options include positive or negative electrical disconnection, positive or negative switching, continuous operator controlled remote “on”, and passive disconnect via vehicle's ignition off. The addition of the FR1053 Time Delay Relay makes the switch suitable for vehicles requiring a Selective Catalytic Reduction cleaning cycle or other custom features.


  • 12 Volt Electronic Battery Disconnect Switch. 24V system available upon request.
  • Passive Magnetic Solenoid Operation
  • 250 Amps Continuous / 2500 Amp Surge
  • IP 65 Rating
  • Sealed Waterproof Design - Can withstand the most severe operating conditions
  • Ideal Protection For:
    • Construction, & Farm Equipment / Mining & Off-Highway Vehicles
    • Heavy-Duty Trucks
    • Automotive/Racing
    • Marine
  • Momentary Push Button Switches sold separately


Part No. FR1052
Max Continuous Current 250 Amps
Max Surge Current 2,500 Amps (3 seconds)
Environmental Protection Rating IP65
Water Resistant Yes
Operating Temperature Range -40°C to +85°C / -40°F to +185°F
Contact Terminals Tin-Plated Brass
Contact Hardware Brass
Accessories FR1053 (3 min time delay relay)/FR1055 (6 min time delay relay)
Automatic Shut-Off Yes
Battery Disconnect Mode Positive and Negative
Corrosion Resistance Salt Spray Test: 300h
Internal Contacts Silver-Plated Copper
Manual Emergency Shut-Off No
Terminal Covers Included Yes
Terminal Diameter M10
Terminal Length 0.89" (approx. 57/64 in.)
Tightening Torque (M10 Nuts) 14.75 ft. lbs. / 20 NM
Tightening Torque (M5 Nuts) 1.18 ft. lbs. / 1.6 NM

Time Delay

Yes, with Timer Relay—3 minute and 6 minute (not included)
Voltage 12V

Please contact us at 1-800-648-8022 before ordering to ensure proper suitability.

More Information
Weight 5.000000
Shipping Dimensions 6" x 6" x 6"
Warranty 90 Day
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