Automotive Parts 150A Waterproof Circuit Breaker (12V-48V DC) - 3 Pack
Three 150A waterproof ignition-protected circuit breakers with copper terminals, washers, and mounting screws.
Diagram showing 150A waterproof circuit breaker with push-button reset and kill switch functionality.
Dimensional diagram of 150Amp waterproof circuit breaker showing stud size and product measurements.
Single 150Amp waterproof circuit breaker with manual reset button and M6 mounting holes.
Collage showing wide application of 150Amp circuit breakers for vehicles, automotive batteries, and shipping logistics.
Single 150Amp waterproof circuit breaker with battery pole connection diagram.
BlueStars lifestyle graphic featuring a group of friends sitting on a truck tailgate by a lake.
Three 150A waterproof ignition-protected circuit breakers with copper terminals, washers, and mounting screws.
Diagram showing 150A waterproof circuit breaker with push-button reset and kill switch functionality.
Dimensional diagram of 150Amp waterproof circuit breaker showing stud size and product measurements.
Single 150Amp waterproof circuit breaker with manual reset button and M6 mounting holes.
Collage showing wide application of 150Amp circuit breakers for vehicles, automotive batteries, and shipping logistics.
Single 150Amp waterproof circuit breaker with battery pole connection diagram.
BlueStars lifestyle graphic featuring a group of friends sitting on a truck tailgate by a lake.
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150A Waterproof Circuit Breaker (12V-48V DC) - 3 Pack

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150A Waterproof Circuit Breaker (12V-48V DC)

Key Features

  • 150 amp rated manual-reset circuit breaker for 12V-48V DC systems
  • Push-button reset lever doubles as a manual disconnect switch
  • Waterproof housing rated IP67 for marine and outdoor exposure
  • Surface-mount design with threaded stud terminals for direct wiring

Replaces / Cross-Reference Part Numbers

This is a generic, unbranded circuit breaker sold under multiple private-label names with no manufacturer part number. It does not cross-reference to a specific OEM part; compatibility should be confirmed by amperage rating (150A), voltage range (12V-48V DC), and stud/terminal size against the existing breaker or wiring being replaced.

Compatibility & Fitment

  • Operating voltage: 12V-48V DC
  • Rated current: 150A
  • Suitable for boats, yachts, RVs, trailers, trolling motors, solar systems, and 12V-48V DC audio/electrical circuits
  • Surface-mount stud terminals; confirm stud size and wire gauge compatibility before installation

When to Replace

  • Breaker fails to reset or hold a closed circuit after repeated attempts
  • Housing shows cracking, corrosion, or water intrusion at the terminals
  • Breaker trips well below its rated 150A load under normal operating conditions
  • Terminals show heat discoloration, pitting, or looseness that can't be corrected by tightening

Installation Tips

  • Disconnect the battery or power source before installing or replacing any circuit breaker
  • Confirm the breaker's amperage rating matches the circuit's wiring gauge and load requirements
  • Mount on a flat, stable surface away from direct exposure to fuel, oil, or excessive vibration
  • Torque terminal connections to the wire lug manufacturer's specification to prevent loosening over time
  • If unfamiliar with DC electrical wiring, have the installation checked by a qualified marine or auto electrician
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  • Manual Reset Switch

    Manual Reset Switch

    Simple manual control with reset arm, serving as both a switch for battery/DC sound amplifier system
  • Superior Quality

    Superior Quality

    Premium steel studs are stainless with protective stud insulators included.
  • Waterproof Level IP67

    Waterproof Level IP67

    This product adopts I P67 waterproof thermal-plastic mount cover ensuring long life service.
  • Package Include

    Package Include

    3 x 150Amp Circuit Breaker | 6 x 6AWG-1/4'' Wire Lugs | 12 x M6 Copper Washers | 6 x Self Tapping Screws
BRINGING RELIABILITY TO THE SWITCH

BRINGING RELIABILITY TO THE SWITCH

Model
150Amp Circuit Breaker
Voltage Rating
12-48V DC
Interrupt Capacity
3KA@48VDC
Operating Temperature
-32°C to 82°C
Storage Temperature
-34°C to 149°C
Terminal Size
1/4"-28

FAQ

These breakers are designed for high-amperage DC electrical systems, commonly used in marine trolling motors, automotive audio systems, RV power distribution, battery charging systems, and solar power setups where overcurrent protection is required.
These are manual reset breakers. When a fault occurs, the internal mechanism will trip, and the reset lever will physically move to the 'off' position. You can visually inspect the lever; if it is in the tripped position, you will need to manually push it back to the 'on' position once the underlying electrical fault has been resolved.
Yes, the manual reset lever allows you to use these breakers as a convenient disconnect switch. You can manually trip the breaker to cut power to your equipment for maintenance or storage without needing to remove the fuse or disconnect the battery terminals.
For a 150-amp load, you must use wire sized appropriately to handle the current without overheating. We recommend using at least 2 AWG or 1/0 AWG copper wire, depending on the length of your cable run, to ensure minimal voltage drop and safe operation.
These breakers feature a water-resistant housing designed to protect the internal components from moisture and dust. While they are suitable for engine compartments and marine environments, they should not be submerged in water.