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UM Series Circuit Breakers

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Product	Type	Current Rating	Voltage Rating AC	Voltage Rating DC	Number of Poles	Actuator	Minimum Operating Temperature	Maximum Operating Temperature	Illuminated
Circuit Breakers 16A MCB GCHAR 1P+N 277VAC UL508 2G16UM Altech 1: $47.60 41In Stock	Mfr. Part No. 2G16UM Mouser Part No 845-2G16UM	Altech	Circuit Breakers 16A MCB GCHAR 1P+N 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	41In Stock	$47.60 $45.28 $43.61 $40.81 View Quote	Min.: 1 Mult.: 1	UM			16 A	277 VAC	80 VDC	2 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 20A MCB GCHAR 1P+N 277VAC UL508 2G20UM Altech 1: $47.60 32In Stock	Mfr. Part No. 2G20UM Mouser Part No 845-2G20UM	Altech	Circuit Breakers 20A MCB GCHAR 1P+N 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	32In Stock	$47.60 $42.95 $41.73 $40.69 View Quote	Min.: 1 Mult.: 1	UM			20 A	277 VAC	80 VDC	2 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 13A Z Characteristic UL 508 1 POLE 1Z13UM Altech 1: $58.85 11In Stock	Mfr. Part No. 1Z13UM Mouser Part No 845-1Z13UM	Altech	Circuit Breakers 13A Z Characteristic UL 508 1 POLE Learn More about Altech um v ea circuit breakers	Datasheet	11In Stock	$58.85 $50.90 $46.95 $37.24 View $36.06 $35.09 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	Z-Trip	13 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 40A D Characteristic UL 508 1 POLE 1D40UM Altech 1: $38.42 11In Stock 1Expected 16/10/2026	Mfr. Part No. 1D40UM Mouser Part No 845-1D40UM	Altech	Circuit Breakers 40A D Characteristic UL 508 1 POLE Learn More about Altech um v ea circuit breakers	Datasheet	11In Stock 1Expected 16/10/2026	$38.42 $32.46 $31.31 $24.37 View $23.57 $22.86 $22.29 Quote	Min.: 1 Mult.: 1	UM			40 A	277 VAC	24 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 32A Z Characteristic UL 508 1 POLE 1Z32UM Altech 1: $58.85 12In Stock	Mfr. Part No. 1Z32UM Mouser Part No 845-1Z32UM	Altech	Circuit Breakers 32A Z Characteristic UL 508 1 POLE Learn More about Altech um v ea circuit breakers	Datasheet	12In Stock	$58.85 $50.90 $46.95 $39.68 View $38.46 $37.38 Quote	Min.: 1 Mult.: 1	UM			32 A	277 VAC	24 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 20A MCB B CHAR 3 PL 480Y/277VAC UL508 3B20UM Altech 1: $98.32 32In Stock	Mfr. Part No. 3B20UM Mouser Part No 845-3B20UM	Altech	Circuit Breakers 20A MCB B CHAR 3 PL 480Y/277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	32In Stock	$98.32 $82.42 $77.93 $66.48 View $64.66 Quote	Min.: 1 Mult.: 1	UM			20 A	277 VAC	60 VDC	3 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 10A MCB CCHAR 3 PL 480Y/277VAC UL508 3C10UM Altech 1: $66.01 31In Stock	Mfr. Part No. 3C10UM Mouser Part No 845-3C10UM	Altech	Circuit Breakers 10A MCB CCHAR 3 PL 480Y/277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	31In Stock	$66.01 $60.96	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	10 A	277 VAC	80 VDC	3 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 13A MCB B Char 1pl 277VAC UL508 1B13UM Altech 1: $42.84 1In Stock	Mfr. Part No. 1B13UM Mouser Part No 845-1B13UM	Altech	Circuit Breakers 13A MCB B Char 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	1In Stock	$42.84 $36.26 $27.71 $24.91 View $23.79 $23.08 $22.48 Quote	Min.: 1 Mult.: 1	UM			13 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 15A CRT BRKR BCHAR 1pl UL508 1B15UM Altech 1: $36.64 8In Stock	Mfr. Part No. 1B15UM Mouser Part No 845-1B15UM	Altech	Circuit Breakers 15A CRT BRKR BCHAR 1pl UL508 Learn More about Altech um v ea circuit breakers	Datasheet	8In Stock	$36.64 $30.39 $24.84 $22.05 View $21.55 $20.86 $20.36 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	B-Trip	15 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 30A CRT BRKR BCHAR 1pl UL508 1B30UM Altech 1: $36.64 10In Stock	Mfr. Part No. 1B30UM Mouser Part No 845-1B30UM	Altech	Circuit Breakers 30A CRT BRKR BCHAR 1pl UL508 Learn More about Altech um v ea circuit breakers	Datasheet	10In Stock	$36.64 $30.39 $28.04 $22.72 View $22.13 $21.46 $20.96 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	B-Trip	30 A	277 VAC	24 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 1BU3A MCB B CHar 1 pl 277V UL 508 1B3UM Altech 1: $36.64 1In Stock	Mfr. Part No. 1B3UM Mouser Part No 845-1B3UM	Altech	Circuit Breakers 1BU3A MCB B CHar 1 pl 277V UL 508 Learn More about Altech um v ea circuit breakers	Datasheet	1In Stock	$36.64 $29.09 $26.70 $23.67 View $22.94 $22.23 $21.57 Quote	Min.: 1 Mult.: 1	UM			3 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 6A MCB B Char 1 pl 277VAC UL508 1B6UM Altech 1: $34.14 6In Stock	Mfr. Part No. 1B6UM Mouser Part No 845-1B6UM	Altech	Circuit Breakers 6A MCB B Char 1 pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	6In Stock	$34.14 $28.54 $23.79 $23.35 View $22.71 $22.02 $21.45 Quote	Min.: 1 Mult.: 1	UM			6 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers .3A MCB CChar 1pl 277VAC UL508 1C03UM Altech 1: $34.14 2In Stock	Mfr. Part No. 1C03UM Mouser Part No 845-1C03UM	Altech	Circuit Breakers .3A MCB CChar 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	2In Stock	$34.14 $23.79 $23.26 $21.56 View $20.74 $20.11 $19.62 Quote	Min.: 1 Mult.: 1	UM			300 mA	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 10A MCB CCHAR 1pl 277VAC UL508 1C10UM Altech 1: $30.48 25In Stock	Mfr. Part No. 1C10UM Mouser Part No 845-1C10UM	Altech	Circuit Breakers 10A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	25In Stock	$30.48 $27.08 $21.24 $20.96 View $20.29 $19.79 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	10 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 5A CRT BRKR CCHAR 277VAC UL508 1C15UM Altech 1: $34.14 1In Stock	Mfr. Part No. 1C15UM Mouser Part No 845-1C15UM	Altech	Circuit Breakers 5A CRT BRKR CCHAR 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	1In Stock	$34.14 $23.79 $22.61 $21.57 View $20.59 $20.09 Quote	Min.: 1 Mult.: 1	UM			15 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 16A MCB CCHAR 1pl 277VAC UL508 1C16UM Altech 1: $34.14 1In Stock	Mfr. Part No. 1C16UM Mouser Part No 845-1C16UM	Altech	Circuit Breakers 16A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	1In Stock	$34.14 $23.79 $22.72 $21.84 View $21.12 $20.55 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	16 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 2A MCB CCHAR 1pl 277VAC UL508 1C2UM Altech 1: $23.79 13In Stock	Mfr. Part No. 1C2UM Mouser Part No 845-1C2UM	Altech	Circuit Breakers 2A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	13In Stock	$23.79 $23.16 $22.68 $22.10 View $21.57 Quote	Min.: 1 Mult.: 1	UM			2 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 3A MCB CCHAR 1pl 277VAC UL508 1C3UM Altech 1: $23.79 3In Stock	Mfr. Part No. 1C3UM Mouser Part No 845-1C3UM	Altech	Circuit Breakers 3A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	3In Stock	$23.79 $23.72 $23.02 $22.51 View $21.96 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	3 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 4A MCB CCHAR 1pl 277VAC UL508 1C4UM Altech 1: $36.64 8In Stock	Mfr. Part No. 1C4UM Mouser Part No 845-1C4UM	Altech	Circuit Breakers 4A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	8In Stock	$36.64 $30.39 $27.34 $23.62 View $22.79 $21.99 $21.53 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	4 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 5A MCB CCHAR 1pl 277VAC UL508 1C5UM Altech 1: $32.94 11In Stock	Mfr. Part No. 1C5UM Mouser Part No 845-1C5UM	Altech	Circuit Breakers 5A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	11In Stock	$32.94 $29.47 $27.55 $24.29 View $23.65 $23.08 $22.46 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	5 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 6A MCB CCHAR 1pl 277VAC UL508 1C6UM Altech 1: $36.64 14In Stock	Mfr. Part No. 1C6UM Mouser Part No 845-1C6UM	Altech	Circuit Breakers 6A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	14In Stock	$36.64 $30.39 $28.04 $23.15 View $22.63 $21.89 $21.32 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	6 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 8A MCB CCHAR 1pl 277VAC UL508 1C8UM Altech 1: $39.04 1In Stock	Mfr. Part No. 1C8UM Mouser Part No 845-1C8UM	Altech	Circuit Breakers 8A MCB CCHAR 1pl 277VAC UL508 Learn More about Altech um v ea circuit breakers	Datasheet	1In Stock	$39.04 $23.79 $23.26 $22.81 Quote Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	C-Trip	8 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 10A D Characteristic UL 508 1 POLE 1D10UM Altech 1: $28.95 24In Stock	Mfr. Part No. 1D10UM Mouser Part No 845-1D10UM	Altech	Circuit Breakers 10A D Characteristic UL 508 1 POLE Learn More about Altech um v ea circuit breakers	Datasheet	24In Stock	$28.95 $27.39 $26.88 $21.67 View $20.92 $20.33 $19.92 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	D-Trip	10 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 15A D Characteristic UL 508 1 POLE 1D15UM Altech 1: $23.79 4In Stock	Mfr. Part No. 1D15UM Mouser Part No 845-1D15UM	Altech	Circuit Breakers 15A D Characteristic UL 508 1 POLE Learn More about Altech um v ea circuit breakers	Datasheet	4In Stock	$23.79 $23.47 $22.60 $20.58 View $20.12 Quote	Min.: 1 Mult.: 1	UM	Circuit Breakers	D-Trip	15 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated
Circuit Breakers 20A D Characteristic UL 508 1 POLE 1D20UM Altech 1: $34.02 8In Stock	Mfr. Part No. 1D20UM Mouser Part No 845-1D20UM	Altech	Circuit Breakers 20A D Characteristic UL 508 1 POLE Learn More about Altech um v ea circuit breakers	Datasheet	8In Stock	$34.02 $31.30 $23.79 $23.06 View $22.22 $21.59 $21.17 Quote	Min.: 1 Mult.: 1	UM			20 A	277 VAC	42 VDC	1 Pole	Handle	- 25 C	+ 55 C	Non-Illuminated

UM Series Circuit Breakers

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300 mA
500 mA
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1 A
1.6 A
2 A
2.5 A
3 A
3.5 A
4 A
5 A
6 A
8 A
10 A
12 A
12.5 A
13 A
15 A
16 A