Circuit Breakers – Mouser United Kingdom

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5SY4 Miniature Circuit Breakers

Siemens 5SY4 Miniature Circuit Breakers provide safe short-circuit and overload protection for industrial applications. Siemens 5SY Miniature Circuit Breakers are available in 1-, 2-, 3-, 4-, 1+N, and 3+N-pole versions and are designed for rated currents from 0.3A to 80A at rated switching capacities of 6kA, 10kA, and 15kA. 5SY4 protects circuits of air-conditioning and ventilation systems, control cabinets, and controllers from the consequences of short-circuit and overload events.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Current Rating	Voltage Rating AC	Voltage Rating DC	Number of Poles	Actuator	Minimum Operating Temperature	Maximum Operating Temperature	Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 0.5A 5K C-TRIP 5SY42057 Siemens 1: £106.48 5In Stock	Mfr. Part No. 5SY42057 Mouser Part No 982-5SY42057	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 0.5A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£106.48 £91.71 £87.11 £80.67 View £78.32 Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	500 mA	400 VAC		2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 6A 5K B-TRIP 5SY42066 Siemens 1: £106.48 5In Stock	Mfr. Part No. 5SY42066 Mouser Part No 982-5SY42066	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 6A 5K B-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£106.48 £91.71 £87.11 £80.67 View £78.31 Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	6 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 6A 5K C-TRIP 5SY42067 Siemens 1: £96.72 4In Stock 3On Order	Mfr. Part No. 5SY42067 Mouser Part No 982-5SY42067	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 6A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	4In Stock 3On Order	£96.72 £82.56 £78.91 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	6 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 6A 5K D-TRIP 5SY42068 Siemens 1: £106.48 5In Stock	Mfr. Part No. 5SY42068 Mouser Part No 982-5SY42068	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 6A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£106.48 £91.71 £86.61 £71.32 £66.23	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	6 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K A-TRIP 5SY42105 Siemens 1: £107.84 6In Stock	Mfr. Part No. 5SY42105 Mouser Part No 982-5SY42105	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K A-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	6In Stock	£107.84 £87.11 £80.67 £78.30 View Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	10 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K B-TRIP 5SY42106 Siemens 1: £106.48 3In Stock	Mfr. Part No. 5SY42106 Mouser Part No 982-5SY42106	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K B-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	3In Stock	£106.48 £90.39 £87.14 £80.41 View £77.68 Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	10 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K C-TRIP 5SY42107 Siemens 1: £92.81 12In Stock	Mfr. Part No. 5SY42107 Mouser Part No 982-5SY42107	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	12In Stock	£92.81 £89.42 £82.45 £66.31 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	10 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K D-TRIP 5SY42108 Siemens 1: £105.73 6In Stock	Mfr. Part No. 5SY42108 Mouser Part No 982-5SY42108	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 10A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	6In Stock	£105.73 £91.71 £80.84 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	10 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 5A 5K C-TRIP 5SY42117 Siemens 1: £97.58 3In Stock	Mfr. Part No. 5SY42117 Mouser Part No 982-5SY42117	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 5A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	3In Stock	£97.58 £84.84 £79.49 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	5 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 13A 5K C-TRIP 5SY42137 Siemens 1: £93.96 5In Stock	Mfr. Part No. 5SY42137 Mouser Part No 982-5SY42137	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 13A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£93.96 £91.71 £87.14 £80.41 View £77.68 Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	13 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K B-TRIP 5SY42166 Siemens 1: £106.48 2In Stock	Mfr. Part No. 5SY42166 Mouser Part No 982-5SY42166	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K B-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	2In Stock	£106.48 £90.98 £87.11 £80.67 View £78.31 Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	16 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K C-TRIP 5SY42167 Siemens 1: £105.73 5In Stock	Mfr. Part No. 5SY42167 Mouser Part No 982-5SY42167	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£105.73 £85.41 £79.45 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	16 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K D-TRIP 5SY42168 Siemens 1: £105.73 2In Stock	Mfr. Part No. 5SY42168 Mouser Part No 982-5SY42168	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 16A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	2In Stock	£105.73 £87.67 £80.84 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	16 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 15A 5K C-TRIP 5SY42187 Siemens 1: £105.73 3In Stock 3On Order	Mfr. Part No. 5SY42187 Mouser Part No 982-5SY42187	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 15A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	3In Stock 3On Order	£105.73 £85.41 £79.45 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	15 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 20A 5K C-TRIP 5SY42207 Siemens 1: £105.73 12In Stock	Mfr. Part No. 5SY42207 Mouser Part No 982-5SY42207	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 20A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	12In Stock	£105.73 £91.71 £86.61 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	20 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 25A 5K C-TRIP 5SY42257 Siemens 1: £106.48 5In Stock	Mfr. Part No. 5SY42257 Mouser Part No 982-5SY42257	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 25A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£106.48 £91.71 £87.11 £80.67 View £78.31 Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	25 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 2P 480V 40A 5K C-TRIP 5SY42407 Siemens 1: £105.73 4In Stock 2Expected 27/11/2026	Mfr. Part No. 5SY42407 Mouser Part No 982-5SY42407	Siemens	Circuit Breakers SUP PTOR 5SY4 2P 480V 40A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	4In Stock 2Expected 27/11/2026	£105.73 £85.41 £79.45 £66.84 £65.59	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	40 A	400 VAC	60 VDC	2 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 2A 5K C-TRIP 5SY43027 Siemens 1: £152.66 5In Stock	Mfr. Part No. 5SY43027 Mouser Part No 982-5SY43027	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 2A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£152.66 £129.91 £123.58 £115.60 View Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	2 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 2A 5K D-TRIP 5SY43028 Siemens 1: £155.49 6In Stock	Mfr. Part No. 5SY43028 Mouser Part No 982-5SY43028	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 2A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	6In Stock	£155.49 £123.58 £115.60 View Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	2 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 6A C-TRIP 5SY43067 Siemens 1: £137.95 1In Stock	Mfr. Part No. 5SY43067 Mouser Part No 982-5SY43067	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 6A C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	1In Stock	£137.95 £120.10 £111.03 £98.39	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	6 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 6A 5K D-TRIP 5SY43068 Siemens 1: £152.43 5In Stock	Mfr. Part No. 5SY43068 Mouser Part No 982-5SY43068	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 6A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£152.43 £129.91 £112.53 £98.39	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	6 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K C-TRIP 5SY43107 Siemens 1: £132.92 4In Stock	Mfr. Part No. 5SY43107 Mouser Part No 982-5SY43107	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	4In Stock	£132.92 £115.67 £107.12 £98.39	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	10 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K D-TRIP 5SY43108 Siemens 1: £152.43 1In Stock	Mfr. Part No. 5SY43108 Mouser Part No 982-5SY43108	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 10A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	1In Stock	£152.43 £121.19 £112.53 £98.39	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	10 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 16A 5K D-TRIP 5SY43168 Siemens 1: £132.92 3In Stock	Mfr. Part No. 5SY43168 Mouser Part No 982-5SY43168	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 16A 5K D-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	3In Stock	£132.92 £115.67 £107.12 £98.39	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	16 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated
Circuit Breakers SUP PTOR 5SY4 3P 480V 15A 5K C-TRIP 5SY43187 Siemens 1: £152.66 5In Stock	Mfr. Part No. 5SY43187 Mouser Part No 982-5SY43187	Siemens	Circuit Breakers SUP PTOR 5SY4 3P 480V 15A 5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	5In Stock	£152.66 £129.91 £123.58 £115.60 View Quote	Min.: 1 Mult.: 1	Circuit Breakers	Miniature	15 A	400 VAC	60 VDC	3 Pole	Lever	- 40 C	+ 70 C	Non-Illuminated