10A Breakers | McMaster-Carr

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	Current Current	Show

10A

	Current Current	Hide

	Number of Poles Number of Poles

	Mounting Location Mounting Location

	Voltage Voltage

	Frequency Frequency

50Hz

60Hz

	Specifications Met Specifications Met

	Circuit Breaker Type Circuit Breaker Type

Thermal

Magnetic

	Breakthrough Current Breakthrough Current

	Manual Reset Style Manual Reset Style


Toggle	Push Button

Lever	Rocker

	Wire Connection Type Wire Connection Type

	Screw-Clamp Terminals
	Screw Terminals
	Quick- Disconnect Terminals

	Maximum Temperature Maximum Temperature

	Reset Type Reset Type

Manual

Automatic

	System of Measurement System of Measurement

Inch

	Width Width

	Depth Depth

2.36"

	Minimum Temperature Minimum Temperature

	Height Height

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Manufacturer Fuse Equivalent Manufacturer Fuse Equivalent

257

ATC

ATO

	Mount Type Mount Type

Screw

Snap In

	Number of Mounting Holes Number of Mounting Holes

	Environment Environment

Dusty

Damp

Submersible

	Depth Behind Panel Depth Behind Panel

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30 Products

Choosing an Electrical Switch

1 Pole Circuit Breaker

2 Pole Circuit Breaker

3 Pole Circuit Breaker

Use these circuit breakers upstream from small transformers, lighting, and control circuits. They meet UL 489 requirements for branch circuit protection. All are thermal/magnetic—breakers trip when heat is generated by sustained, low-level overload current, but will trip quickly when the magnetic field in the coil senses a high-current short circuit. Mount directly to DIN rail.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Alarm (sold separately) sends an audible signal when the breaker is tripped.

1 Pole—Toggle Style
Voltage	Frequency, Hz	Breakthrough Current	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Features	Specifications Met	Current, A		Each
277V AC	50/60	10,000 A @ 277 V AC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-4° to 140°	Time Delay Trip	UL 489, CSA Certified	10	000000	000000
2 Pole—Toggle Style
277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	1.39"	2.36"	-4° to 140°	Time Delay Trip	UL 489, CSA Certified	10	000000	00000
3 Pole—Toggle Style
277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-4° to 140°	Time Delay Trip	UL 489, CSA Certified	10	000000	00000

Alarms

Alarm

Current	Includes		Each
0.5 A @ 110 V DC, 2 A @ 250 V AC	Two Sets of Auxillary Contacts	0000000	000000

High-Inrush DIN-Rail Mount AC Branch Circuit Breakers

Able to handle high inrush current caused by equipment startup, use these circuit breakers upstream from motors and larger transformer applications. They meet UL 489 requirements for branch circuit protection. All are thermal/magnetic—breakers trip when heat is generated by sustained, low-level overload current, but will trip quickly when the magnetic field in the coil senses a high-current short circuit. Mount directly to DIN rail.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Alarm (sold separately) sends an audible signal when the breaker is tripped.

1 Pole

2 Pole

3 Pole

1 Pole—Toggle Style
Voltage	Frequency, Hz	Breakthrough Current	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Features	Specifications Met	Current, A		Each
277V AC	50/60	10,000 A @ 277 V AC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	25° to 100°	Time Delay Trip	UL 489, CSA Certified, IEC European Standards	10	000000	000000
2 Pole—Toggle Style
277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	1.39"	2.36"	25° to 100°	Time Delay Trip	UL 489, CSA Certified, IEC European Standards	10	000000	00000
3 Pole—Toggle Style
277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	25° to 100°	Time Delay Trip	UL 489, CSA Certified, IEC European Standards	10	000000	00000

Alarms

Current	Includes		Each
0.5 A @ 110 V DC, 2 A @ 250 V AC	Two Sets of Auxillary Contacts	0000000	000000

DIN-Rail Mount AC Equipment Circuit Breakers

These circuit breakers meet UL 1077 requirements for supplemental circuit protection and are designed for use downstream of a branch circuit breaker. Use them with small transformers, lighting, and control circuits. All are thermal/magnetic—breakers trip when heat is generated by sustained, low-level overload current, but will trip quickly when the magnetic field in the coil senses a high-current short circuit. Mount directly to DIN rail.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Alarm (sold separately) sends an audible signal when the breaker is tripped.

1 Pole

2 Pole

3 Pole

1 Pole—Toggle Style
Voltage	Frequency, Hz	Breakthrough Current	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Features	Specifications Met	Current, A		Each
277V AC	50/60	5,000 A @ 277 V AC	35	Screw-Clamp Terminals	3.15"	0.7"	2.36"	-40° to 165°	Time Delay Trip	UL 1077, CSA Certified, CE Marked	10	000000	000000
2 Pole—Toggle Style
277V AC/480YV AC	50/60	5,000 A @ 277 V AC 5,000 A @ 480 V AC	35	Screw-Clamp Terminals	3.15"	1.4"	2.36"	-40° to 165°	Time Delay Trip	UL 1077, CSA Certified, CE Marked	10	000000	00000
3 Pole—Toggle Style
277V AC/480YV AC	50/60	5,000 A @ 277 V AC 5,000 A @ 480 V AC	35	Screw-Clamp Terminals	3.15"	2.1"	2.36"	-40° to 165°	Time Delay Trip	UL 1077, CSA Certified, CE Marked	10	000000	00000

Alarms

Current	Includes		Each
0.5 A @ 110 V DC, 2 A @ 250 V AC	Two Sets of Auxillary Contacts	0000000	000000

High-Inrush DIN-Rail Mount AC Equipment Circuit Breakers

Able to handle high inrush currents caused by equipment startup, these circuit breakers are suitable for motor and larger transformer applications. They meet UL 1077 requirements for supplemental circuit protection and are designed for use downstream of a branch circuit breaker. All are thermal/magnetic—breakers trip when heat is generated by sustained, low-level overload current, but will trip quickly when the magnetic field in the coil senses a high-current short circuit. Mount directly to DIN rail.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Alarm (sold separately) sends an audible signal when the breaker is tripped.

1 Pole

2 Pole

3 Pole

1 Pole—Toggle Style
Voltage	Frequency, Hz	Breakthrough Current	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Features	Specifications Met	Current, A		Each
277V AC	50/60	5,000 A @ 277 V AC	35	Screw-Clamp Terminals	3.15"	0.7"	2.36"	25° to 100°	Time Delay Trip	UL 1077, CSA Certified, CE Marked, IEC European Standards	10	000000	000000
2 Pole—Toggle Style
277V AC/480YV AC	50/60	5,000 A @ 277 V AC 5,000 A @ 480 V AC	35	Screw-Clamp Terminals	3.15"	1.4"	2.36"	25° to 100°	Time Delay Trip	UL 1077, CSA Certified, CE Marked, IEC European Standards	10	000000	00000
3 Pole—Toggle Style
277V AC/480YV AC	50/60	5,000 A @ 277 V AC 5,000 A @ 480 V AC	35	Screw-Clamp Terminals	3.15"	2.1"	2.36"	25° to 100°	Time Delay Trip	UL 1077, CSA Certified, CE Marked, IEC European Standards	10	000000	00000

Alarms

Current	Includes		Each
0.5 A @ 110 V DC, 2 A @ 250 V AC	Two Sets of Auxillary Contacts	0000000	000000

High-Temperature Panel-Mount AC Circuit Breakers

1 Pole

These magnetic circuit breakers are unaffected by temperature changes and trip when the magnetic field in the coil increases from current overload, so they are suitable for high-temperature environments.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

				For Panel Cutout
Voltage	Frequency, Hz	Breakthrough Current	Temp. Range, °F	Ht.	Wd.	Dp. Behind Panel	Mount Type	Mounting Fasteners Included	Wire Connection Type	Ht.	Wd.	Current, A		Each
1 Pole—Lever Style
250V AC	50/60	1,500 A @ 250 V AC	-40° to 185°	1.45"	0.76"	2.48"	Screw On	No	Screw Terminals	2.5"	0.75"	10	0000000	000000

Plug-Base Circuit Breakers

Replace any Edison-base fuse with these resettable circuit breakers.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Push Button Style
Current, A	Voltage	Manufacturer Fuse Equivalent	Circuit Breaker Type	Breakthrough Current	Mounting Location	Specifications Met		Each
10	120V AC	T, TL, W	Thermal	5,000 A @ 120 V AC	Fuse Panel	UL Listed	000000	000000

Blade-Style DC Circuit Breakers

Protect against overload and short circuits in low-voltage automotive and other electronic applications. These circuit breakers can replace type ATC, AF, ATO, and 257 blade-style fuses. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Automatic Reset

Voltage	Breakthrough Current	Mounting Location	Ht.	Wd.	Blade Ht.	Temp. Range, °F	Environmental Rating	Specifications Met	Current, A		Each
12V DC	2,000 A @ 12 V DC	Fuse Block	0.95"	0.79"	0.25"	-40° to 185°	IP54	SAE J553	10	000000	00000

Manual Reset—Push Button Style

Manual Reset

Voltage	Breakthrough Current	Mounting Location	Ht.	Wd.	Blade Ht.	Temp. Range, °F	Environmental Rating	Current, A		Each
24V DC	2,000 A @ 24 V DC	Fuse Block	1.16"	0.79"	0.25"	-40° to 185°	IP30	10	000000	000000

Vibration-Resistant Blade-Style DC Circuit Breakers

These circuit breakers resist vibration better than standard low-voltage DC circuit breakers. They protect against overload and short circuits in low-voltage automotive and other electronic applications. Use them to replace type ATC, AT, ATO, and 257 blade-style fuses. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Push Button Style
Voltage	Breakthrough Current	Mounting Location	Ht.	Wd.	Blade Ht.	Temp. Range, °F	Environmental Rating	Specifications Met	Current, A		Each
48V DC	2,000 A @ 48 V DC	Fuse Block	1.5"	0.87"	0.25"	-40° to 185°	IP40	SAE J553	10	000000	000000

Blade-Style High-Voltage DC Circuit Breakers

Rated to 72V DC, these can handle higher voltages than any other DC circuit breaker we offer. Use these circuit breakers in place of type ATC, AF, ATO, and 257 blade-style fuses to protect against overload and short circuits in low-voltage automotive and electronic applications. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

DIN-rail mount holder is required (sold separately) to mount circuit breakers to DIN-rail.

Push Button Style

Voltage	Breakthrough Current	Mounting Location	Ht.	Wd.	Blade Ht.	Temp. Range, °F	Specifications Met	Current, A		Each
72V DC	2,000 A @ 72 V DC	Fuse Block	2.06"	0.96"	0.25"	0° to 140°	CSA Certified, UL Recognized Component, UL 1077	10	000000	000000

DIN-Rail Mount Holders

For DIN Rail Size, mm	Wire Connection Type		Each
35	Screw-Clamp Terminals	000000	000000

Panel-Mount AC/DC Circuit Breakers

In addition to protecting equipment, these circuit breakers can be used as on/off switches. Able to handle high inrush current found in motor start-ups. They meet UL 1077 requirements for supplemental circuit protection and are designed for use downstream of a branch circuit breaker. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Covers for rocker style breakers (sold separately) provide IP54 protection against limited dust and splashed water.

Covers for push-button style breakers (sold separately) provide IP65 protection against water projected from a nozzle.

Push Button Style—Screw-On Mount

Push Button Style

				For Panel Cutout
No. of Poles	Voltage	Frequency, Hz	Breakthrough Current	Ht.	Wd.	Dp. Behind Panel	Mounting Fasteners Included	Quick-Disconnect Tab Wd.	Temp. Range, °F	Specifications Met	Current, A		Each
1	240V AC/60V DC	50/60	1,000 A @ 60 V DC 1,000 A @ 240 V AC	1.98"	0.99"	1.96"	No	0.25"	15° to 130°	UL 1077, UL Recognized Component, CSA Certified	10	000000	000000
2	240V AC/60V DC	50/60	1,000 A @ 60 V DC 1,000 A @ 240 V AC	1.98"	0.99"	1.96"	No	0.25"	15° to 130°	UL 1077, UL Recognized Component, CSA Certified	10	000000	00000

Rocker Style—Snap-In Mount

Rocker Style

				For Panel Cutout
No. of Poles	Voltage	Frequency, Hz	Breakthrough Current	Ht.	Wd.	Dp. Behind Panel	Quick-Disconnect Tab Wd.	Temp. Range, °F	Specifications Met	Current, A		Each
1	240V AC/60V DC	50/60	1,000 A @ 60 V DC 1,000 A @ 240 V AC	1.77"	0.85"	1.75"	0.25"	15° to 130°	UL 1077, UL Recognized Component, CSA Certified	10	000000	000000
2	240V AC/60V DC	50/60	1,000 A @ 60 V DC 1,000 A @ 240 V AC	1.77"	0.85"	1.75"	0.25"	15° to 130°	UL 1077, UL Recognized Component, CSA Certified	10	000000	00000

Toggle Style—Screw-On Mount

Toggle Style

No. of Poles	Voltage	Frequency, Hz	For Panel Cutout Dia.	Dp. Behind Panel	Quick-Disconnect Tab Wd.	Temp. Range, °F	Specifications Met	Current, A		Each
1	250V AC/75V DC	50/60	1/4"	2.42"	0.25"	-20° to 140°	UL Recognized Component	10	000000	000000

Covers

For Circuit Breaker Style	Environmental Rating	Material	Color		Each
Push Button	IP65	Plastic	Clear	000000	00000
Rocker	IP54	Plastic	Clear	000000	0000

High-Temperature Panel-Mount AC/DC Circuit Breakers

1 Pole

2 Pole

These magnetic circuit breakers are unaffected by temperature changes so they are suitable for high-temperature environments. They trip when the magnetic field in the coil increases from current overload.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

2-pole circuit breakers require one panel cutout for each pole.

				For Panel Cutout
Voltage	Frequency, Hz	Breakthrough Current	Temp. Range, °F	Dia.	Dp. Behind Panel	Wire Connection Type	Quick-Disconnect Tab Wd.	Ht.	Wd.	Current, A		Each
1 Pole—Toggle Style
277V AC/80V DC	50/60	5,000 A @ 277 V AC 7,500 A @ 80 V DC	-40° to 185°	0.63"	1.64"	Quick-Disconnect Terminals	0.25"	2"	0.75"	10	00000000	000000
2 Pole—Toggle Style
277V AC/80V DC	50/60	5,000 A @ 277 V AC 7,500 A @ 80 V DC	-40° to 185°	0.63"	1.64"	Quick-Disconnect Terminals	0.25"	2"	1.5"	10	0000000	00000

Harsh Environment IEC Connectors with Power Switch

IEC C14

Quick-Disconnect Terminals

Rated IP67, these connectors create a dust- and watertight seal where they fit into the housing of power supplies, appliances, and other electronic devices. Instead of hardwiring your devices, these connectors let you plug in a standard IEC power cord and turn the power on and off with a built-in switch. Wire these connectors using the quick-disconnect terminals; they slide together with matching terminals on your wiring for a secure hold that's also easy to pull apart to make repairs. The terminals are on the back of the connector, so the wiring stays inside your device.

To protect your devices, these connectors have a thermal circuit breaker that uses the excess heat when there’s overcurrent to trip the breaker and cut power. If there’s a short circuit, the breakers can safely stop up to a 2,000-Amp breakthrough current. These connectors also have Class I shock protection, so they’re insulated and have a protective ground.

These connectors meet UL 94 V-0, which means they self-extinguish within 10 seconds if they catch fire, and won’t spread the fire by dripping. They’re also UL and C-UL recognized components, and CE and ENEC marked, so they meet stringent safety standards.

For technical drawings and 3-D models, click on a part number.

		UL Rating		IEC Rating					For Panel Cutout
IEC Style	Current, A	Voltage	Frequency, Hz	Voltage	Frequency, Hz	No. of Circuits Controlled	Switch Starting Position	Industry Designation	Ht.	Wd.	Temp. Range, °F	Environmental Rating		Each
Male Receptacles
Screw On
C14	10	250V AC	60	250V AC	50	2	2 Off (Normally Open)	DPST-NO	2.32"	1.35"	-10° to 140°	IP67	00000000	000000