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Battery Doctor 31202 100 A circuit breaker with terminal covers

Battery Doctor

Battery Doctor 31202 100 A Circuit Breaker

SKU CH-F8ZX-84SG1

A 100 A manual reset circuit breaker with terminal covers for automotive electrical protection

  • Manual reset protects circuits from overload
  • 100 A rating handles high-current automotive loads
  • Terminal covers shield connections from shorts
  • 31200 series design fits standard breaker panels
  • New condition ensures full factory performance

Application fit

The Battery Doctor 31202 is a 100 A manual-reset circuit breaker from the 31200 series designed for automotive electrical systems. It protects wiring and accessories from over-current conditions in cars, trucks and marine installations where a resettable device is preferred over a fuse.

Sustained-load behaviour

Under continuous overload the breaker trips thermally and remains open until the manual reset lever is actuated, preventing repeated cycling that can damage downstream components. Terminal covers are included to reduce the risk of accidental short circuits during service or vibration.

Deciding specification

The 100 A rating is the single figure that determines whether this breaker matches the circuit it must protect; a lower-rated circuit would nuisance-trip while a higher-rated circuit would lack proper protection. Buyers needing a different amperage or an auto-reset function must select another device.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $38.99
Pricier than about 69% of the 2,768 comparable items (median $21.99).

Specifications

Product
Brand nameBATTERY DOCTOR

Questions about this item

How much heat does the 100 A breaker generate during continuous use?

The manual-reset breaker is designed to carry 100 A without excessive temperature rise, and the included terminal covers help contain any heat at the connection points.

What wiring or terminals must I already have to install the 31202 breaker?

You need suitable battery cable and ring or spade terminals that fit the breaker’s studs; the terminal covers supplied with the 31200 series protect those connections once made.

Will the 31202 breaker coordinate with an older fuse block on the same circuit?

The breaker trips manually at 100 A, so it can serve as the primary over-current device ahead of an older fuse block provided the block’s rating does not exceed 100 A.

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