Breakers | McMaster-Carr

Filter by

System of Measurement

Current

Voltage

Number of Poles

Mounting Location

Frequency

Trip Type

Manufacturer

Manufacturer Series

Wire Connection

Breakthrough Current @ Voltage

Manual Reset Style

Circuit Breaker Interruption Type

Certification

C-UL Recognized Component

UL Recognized Component

Width

Number of Circuits Controlled

Number of Spaces

Reset Type

Specifications Met

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

RoHS

Compliant

Compliant with Exemptions

REACH

Height

Enclosure Rating

UL File Number

839 Products

Electrical

Circuit Breakers

Reusable way to interrupt circuits when they overload or short

413 products

Circuit Breaker Boxes

Hold a series of circuit breakers in line; also known as load centers

15 products

Circuit Breaker Box Filler Plates

Conceal live electrical components in circuit breaker boxes to prevent injury and damage

2 products

Circuit Interrupters

Ground fault protection stops injuries from electric shocks; hardwire to equipment to break circuits

1 product

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

16 products

Outlet Strips

Plug in multiple devices to power them from a single outlet

105 products

Electrical Cords

Connect equipment and devices to a power supply

40 products

Electrical Cord Circuit Interrupter Converters

Hardwire to extension cords to protect against electric shock in wet areas

9 products

Electrical Cord Reels

Neatly store electrical cords for easy access

26 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

3 products

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

3 products

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

2 products

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

10 products

Building and Machinery Hardware

T-Slotted Framing Grounding Terminals

Prevent static buildup in T-slotted framing from becoming a shock hazard

1 product

Fabricating and Machining

Nut Cutters

Remove frozen, rusted, and stubborn nuts; also known as nut splitters

6 products

Metal Strip Cutters

Snip through thin rings and narrow bands that are flush against another surface

1 product

Strapping Cutters

Cut through steel and plastic strapping

10 products

Demolition Hammers

Break through pavement, asphalt, and concrete walls and floors

6 products

Chisel Bits

Pair with powered hammers or needle scalers to chip material off of workpieces

37 products

Fluid Handling

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

35 products

Material Handling

Strapping Breakers

Cut strapping on cartons, pallet loads, and crates to access contents

2 products

Chain Belt Pin Removers

Add or remove links on modular mini chain belting

1 product

Power Transmission

Roller Chain Spring Clip Removal Tools

Push or twist to remove spring clips from links

2 products

Chain Breakers

Open links to alter chain length

7 products

Chain Breaker/Riveters

Alter chain length or strengthen it for better performance on high-speed drives

1 product

Facility and Grounds Maintenance

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

17 products