Circuit breakers

3 picks with specs, filters and a calculator to find the right size.

A manual-reset breaker near the battery protects the trolling motor wiring. The calculator tells you the size.

Calculate the size you need Opens the Trolling Motor Power Calculator
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Blue Sea Systems

Blue Sea Systems 285-Series

25 to 150 A sizesUp to 48 V DCManual resetTrip-free

Surface-mount thermal breakers that double as an on/off switch. A yellow lever shows when one has tripped, and it can’t be held closed during a fault.

Best for: Any trolling motor, including 36 V systems.

Check price on Amazon (paid link) Specs from marinedepot.com.au
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Minn Kota

Minn Kota MKR-19 60A

60 AWaterproofManual reset

Minn Kota’s own 60 A waterproof breaker, the size most of their 12 V and 24 V motors call for.

Best for: Minn Kota trolling motors.

Check price on Amazon (paid link) Specs from tacklewarehouse.com
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Blue Sea Systems

Blue Sea Systems 187-Series

25 to 150 A sizesUp to 48 V DCManual resetIgnition protected

A heavy-duty thermal breaker for big loads like 24 V and 36 V trolling motors, windlasses and inverter feeds. It can’t be held on during a fault and is safe on gasoline boats.

Best for: Higher-amp circuits and gas-powered boats.

Check price on Amazon (paid link) Specs from nomadicsupply.com

Pictures are our own illustrations, not photos of the actual products. Specs come from the manufacturer or retailer listing linked on each card and were checked in October 2026. Models and prices change, so confirm details on the listing before you buy. As an Amazon Associate I earn from qualifying purchases.