Description

Overview

150 amp automatic reset circuit breaker protects high-current 12-42V electrical circuits from overload and short circuit damage. It suits trailer, truck, 4WD, auxiliary battery and workshop wiring where a compact surface mount breaker is needed instead of a single-use fuse.

Features

• 150 Amp rating for high-current circuit protection.
• Automatic reset operation restores the circuit after the breaker cools.
• 12-42V input voltage range suits common vehicle electrical systems.
• 74 x 48mm body size for compact surface mount installation.

Specifications and Materials

Narva high amp automatic resetting circuit breaker in a box of 1. Input voltage range: 12-42V. Current rating: 150 Amp. Body size: 74 x 48mm. Part number: 55958.

See Narva circuit breaker technical information

Compatibility and Fitment

Match the 150 Amp rating to the circuit load, cable size and battery feed before ordering. The main mistake is fitting a breaker that is too large for the cable, which can leave the wiring under-protected, or choosing automatic reset where manual fault isolation would be safer.

Related Parts

Check the related service parts below against the wiring job before ordering.

Compliance and Safety

Mount the breaker securely, keep cable runs protected from heat and abrasion, and tighten the terminals properly after crimping the lugs. If the breaker keeps cycling, inspect the circuit for overload, short circuit, damaged insulation or incorrect cable size before returning the trailer or vehicle to service.

Trailer Applications

Workshops use high amp automatic reset breakers on auxiliary battery feeds, winch circuits, power distribution, tail-lift wiring, pump circuits, trailer accessory feeds and heavy vehicle electrical repairs where the circuit needs resettable protection.

Why Choose ICS Trailers

ICS Trailers supplies trailer electrical parts including circuit breakers, battery cable, lugs, heatshrink, junction boxes, plugs and sockets for transport repair work. For breaker matching, check the existing amp rating, cable size, voltage and mounting space before ordering.

Browse more Electrical