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Circuit Breakers

A frame single double pole circuit breakers Newmar DC Power Onboard Standard Series: Single and Double Pole – “A” Frame Size

  • Fit all NEWMAR electrical panels, as well as most other brands
  • Feature magnetic-hydraulic “trip-free” mechanism 5-30 amp rated to 65 VDC or 277 VAC; 40 and 50 amp rated to 32 VDC or 120 VAC (See rating note below).
  • Mounting screws not provide order separately
  • #10 screw terminals on rear for wiring

All circuit breakers offered by NEWMAR are UL recognized.

  • Black toggle handles
  • Single pole values: 5, 10, 15, 20, 25, 30, 40 or 50 amp.
  • Double pole values: 15, 20, 30 or 50 amp


High Amperage Series:
Single Pole “C” Frame Size

Rated for up to 65 VDC or 120/240 VAC service

C frame circuit breakers Newmar DC Power

  • Feature auxiliary contacts for optional remote monitoring of circuit breaker status (Form C)
  • 1/4” studs on rear for wiring


  • Current rating of 75 or 100 amps
  • Black toggle handle
  • Two 6-32 screws required for mounting; not included – order separately

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Double Pole BreakerHigh Amperage Series:
Double Pole “C” Frame Size

  • 30, 50, or 100 amp
  • Black toggle handle
  • Dual black toggle handle with tie-bar


High Current Fuses/Fuseblocks

Essential safety item for all inverter installations and other high amperage DC circuit over-current protection.



  • Heavy duty 500 amp, insulated, compact fuse block with corrosion-resistant 5/16” studs
  • Secures to surface with two #10 flat head screws or bolts (not included)
  • Clear lexan cover insulates conductive parts, per ABYC/USCG requirements
  • Accepts industry standard ANL tin-plated copper fuses. Purchase separately.
  • See-through mica element for easy identification of blown fuse

Learn more about High Current Fuses/Fuseblocks

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Waterproof High Amperage Circuit Breakers Newmar_WBS

  • Combines switching and circuit breaker function in one unit
  • Compact size and surface mount configuration protects high amperage circuits at virtually any location: ideal for windlass, bow thrusters, high power feeds to distribution panels in boat and trucks
  • Trip delay curve accommodates high surge amperage for motor start
  • Push to disconnect button de-energizes circuit for maintenance
  • Latch arm resets breaker after overload, but cannot be held
    in “ON” position if short remains on circuit

Learn more about Waterproof High Amperage Circuit Breakers