Siemens Breakers | McMaster-Carr

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System of Measurement

Current

Number of Poles

Voltage

Manufacturer

Manufacturer Series

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Breaker Box

Wire Connection

Screw-Clamp Terminal

Breakthrough Current @ Voltage

10,000 amp @ 120V AC

10,000 amp @ 240V AC

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Circuit Breaker Interruption Type

Magnetic

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Frequency

60 Hz

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Screw-Clamp Terminal

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

EAR99

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DFARS Specialty Metals

Specifications Met

10 Products

Siemens Load-Center Circuit Breakers


1 Pole—Toggle-Switch Style	2 Poles—Toggle-Switch Style

Use with Siemens EQ series breaker boxes. Because they are thermal-magnetic, these circuit breakers trip two different ways. They either trip when heat is generated slowly by consistent low-level overload current or quickly when the magnetic coil senses a high-current short circuit.

UL 489—These circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.

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

	Breakthrough Current @ Voltage	Mounting Location	Wire Connection	Wd.	Specs. Met		Each
1 Pole—Toggle-Switch Style







	Thermal/Magnetic

	15	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	1"	UL 489	5259T41	000000


	20	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	1"	UL 489	5259T42	00000
	30	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	1"	UL 489	5259T43	00000


	2 Poles—Toggle-Switch Style







					Thermal/Magnetic

					15	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T51	00000


					20	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T52	00000
					30	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T53	00000
					40	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T54	00000
					50	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T55	00000
					60	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T56	00000
					70	120 240	60	10,000 amp @ 120V AC 10,000 amp @ 240V AC	Breaker Box	Screw-Clamp Terminal	2"	UL 489	5259T6	00000