Circuit Breakers – Mouser United Kingdom

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4230-T Thermal-Magnetic Miniature Circuit Breakers

E-T-A Circuit Breakers 4230-T Thermal-Magnetic Miniature Circuit Breakers (MCBs) are single-pole and multi-pole circuit breakers for DIN rail mounting with toggle actuation, visual status indication, and high rupture capacity. A positively trip-free snap action mechanism ensures reliable switching behavior. A range of trip characteristics and add-on modules make the 4230-T suitable for a variety of applications. The ETA MCBs are rated IP20 and are in accordance with EN 60947-2, UL 1077, and UL 489. E-T-A Circuit Breakers 4230-T Thermal-Magnetic MCBs are ideal for the protection of cables, motors, generators and transformers, thyristors and silicon rectifiers. The components also offer protection for computers and their peripheral equipment, industrial process control systems, telecommunications equipment, and power supplies.

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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.	Series	Product	Type	Current Rating	Voltage Rating AC	Voltage Rating DC	Number of Poles	Actuator	Minimum Operating Temperature	Maximum Operating Temperature	Illuminated
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, C, 5A 4230-T110-K0CE-5A E-T-A 1: £13.21 18In Stock	Mfr. Part No. 4230-T110-K0CE-5A Mouser Part No 457-4230T110K0CE5	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, C, 5A Learn More about E-T-A eta 4230 t mcb	Datasheet	18In Stock	£13.21 £10.96 £10.11 £8.38 View £7.72 £7.61 £7.17	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	5 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, C, 50A 4230-T110-K0CE-50A E-T-A 1: £13.87 44In Stock	Mfr. Part No. 4230-T110-K0CE-50A Mouser Part No 457-4230T110K0CE50	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, C, 50A Learn More about E-T-A eta 4230 t mcb	Datasheet	44In Stock	£13.87 £9.91 £9.32 £9.02 View £8.71 £8.61 Quote	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	50 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, C, 6A 4230-T110-K0CE-6A E-T-A 1: £13.60 42In Stock	Mfr. Part No. 4230-T110-K0CE-6A Mouser Part No 457-4230T110K0CE6	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, C, 6A Learn More about E-T-A eta 4230 t mcb	Datasheet	42In Stock	£13.60 £11.29 £10.85 £8.63 View £7.95 £7.17	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	6 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 10A 4230-T110-K0CU-10A E-T-A 1: £24.15 7In Stock	Mfr. Part No. 4230-T110-K0CU-10A Mouser Part No 457-4230T110K0CU10	E-T-A	Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 10A Learn More about E-T-A eta 4230 t mcb	Datasheet	7In Stock	£24.15 £20.03 £18.47 £15.30 View £14.10 £13.64 Quote	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	10 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 15A 4230-T110-K0CU-15A E-T-A 1: £22.99 6In Stock	Mfr. Part No. 4230-T110-K0CU-15A Mouser Part No 457-4230T110K0CU15	E-T-A	Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 15A Learn More about E-T-A eta 4230 t mcb	Datasheet	6In Stock	£22.99 £19.07 £17.59 £14.57 View £13.52 £13.51	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	15 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 3A 4230-T110-K0CU-3A E-T-A 1: £21.54 5In Stock	Mfr. Part No. 4230-T110-K0CU-3A Mouser Part No 457-4230T110K0CU3	E-T-A	Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 3A Learn More about E-T-A eta 4230 t mcb	Datasheet	5In Stock	£21.54 £18.39 £17.02 £14.70 View £13.80 £13.51	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	3 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 30A 4230-T110-K0CU-30A E-T-A 1: £22.99 2In Stock	Mfr. Part No. 4230-T110-K0CU-30A Mouser Part No 457-4230T110K0CU30	E-T-A	Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 30A Learn More about E-T-A eta 4230 t mcb	Datasheet	2In Stock	£22.99 £18.18 £16.81 £14.54 £13.51	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	30 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 5A 4230-T110-K0CU-5A E-T-A 1: £22.99 23In Stock	Mfr. Part No. 4230-T110-K0CU-5A Mouser Part No 457-4230T110K0CU5	E-T-A	Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 5A Learn More about E-T-A eta 4230 t mcb	Datasheet	23In Stock	£22.99 £19.07 £18.40 £14.57 £13.51	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	5 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 6A 4230-T110-K0CU-6A E-T-A 1: £22.99 2In Stock	Mfr. Part No. 4230-T110-K0CU-6A Mouser Part No 457-4230T110K0CU6	E-T-A	Circuit Breakers 489, 1P, DM, 277VAC/60VDC, C, 6A Learn More about E-T-A eta 4230 t mcb	Datasheet	2In Stock	£22.99 £18.43 £17.14 £14.57 £13.51	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic					Toggle
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 1A 4230-T110-K0DE-1A E-T-A 1: £12.89 3In Stock	Mfr. Part No. 4230-T110-K0DE-1A Mouser Part No 457-4230T110K0DE1	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 1A Learn More about E-T-A eta 4230 t mcb	Datasheet	3In Stock	£12.89 £10.70 £9.87 £8.18 View £7.53 £7.21 £7.17	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	1 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 15A 4230-T110-K0DE-15A E-T-A 1: £13.88 1In Stock	Mfr. Part No. 4230-T110-K0DE-15A Mouser Part No 457-4230T110K0DE15	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 15A Learn More about E-T-A eta 4230 t mcb	Datasheet	1In Stock	£13.88 £10.33 £9.53 £8.60 View £8.52 Quote	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic					Toggle
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 20A 4230-T110-K0DE-20A E-T-A 1: £12.89 4In Stock	Mfr. Part No. 4230-T110-K0DE-20A Mouser Part No 457-4230T110K0DE20	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 20A Learn More about E-T-A eta 4230 t mcb	Datasheet	4In Stock	£12.89 £10.13 £9.14 £8.18 View £7.53 £7.17	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	20 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 6A 4230-T110-K0DE-6A E-T-A 1: £12.89 1In Stock	Mfr. Part No. 4230-T110-K0DE-6A Mouser Part No 457-4230T110K0DE6	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, D, 6A Learn More about E-T-A eta 4230 t mcb	Datasheet	1In Stock	£12.89 £10.70 £9.87 £8.18 View £7.53 £7.17	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	6 A	240 VAC	80 VDC	1 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 2P, DM, 480VAC/60VDC, B, 20A 4230-T120-K0BE-20A E-T-A 1: £23.56 13In Stock	Mfr. Part No. 4230-T120-K0BE-20A Mouser Part No 457-4230T120K0BE20	E-T-A	Circuit Breakers 1077, 2P, DM, 480VAC/60VDC, B, 20A Learn More about E-T-A eta 4230 t mcb	Datasheet	13In Stock	£23.56 £20.52 £18.25 £14.73 View £13.58 £12.90	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	20 A	415 VAC	125 VDC	2 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 2P, DM, 480VAC/60VDC, B, 50A 4230-T120-K0BE-50A E-T-A 1: £23.22 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 4230-T120-K0BE-50A Mouser Part No 457-4230T120K0BE50	E-T-A	Circuit Breakers 1077, 2P, DM, 480VAC/60VDC, B, 50A Learn More about E-T-A eta 4230 t mcb	Datasheet	Non-Stocked Lead-Time 2 Weeks	£23.22 £19.28 £17.77 £14.73 View £13.58 £12.90	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	50 A	415 VAC	125 VDC	2 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 2P, DM, 480VAC/60VDC, C, 10A 4230-T120-K0CU-10A E-T-A 1: £47.08 5In Stock	Mfr. Part No. 4230-T120-K0CU-10A Mouser Part No 457-4230T120K0CU10	E-T-A	Circuit Breakers 489, 2P, DM, 480VAC/60VDC, C, 10A Learn More about E-T-A eta 4230 t mcb	Datasheet	5In Stock	£47.08 £41.42 £38.20 £29.81 £29.73	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	10 A	480 VAC	60 VDC	2 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 2P, DM, 480VAC/60VDC, C, 4A 4230-T120-K0CU-4A E-T-A 1: £49.92 1In Stock	Mfr. Part No. 4230-T120-K0CU-4A Mouser Part No 457-4230T120K0CU4	E-T-A	Circuit Breakers 489, 2P, DM, 480VAC/60VDC, C, 4A Learn More about E-T-A eta 4230 t mcb	Datasheet	1In Stock	£49.92 £41.05 £39.24 £36.06 View £34.99 £34.07 Quote	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic					Toggle
Circuit Breakers 1077, 2P, DM, 480VAC/60VDC, D, 10A 4230-T120-K0DE-10A E-T-A 1: £23.56 27In Stock	Mfr. Part No. 4230-T120-K0DE-10A Mouser Part No 457-4230T120K0DE10	E-T-A	Circuit Breakers 1077, 2P, DM, 480VAC/60VDC, D, 10A Learn More about E-T-A eta 4230 t mcb	Datasheet	27In Stock	£23.56 £17.18 £15.91 £14.02 View £13.30 £12.90	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	10 A	415 VAC	125 VDC	2 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 2P, DM, 480VAC/60VDC,D, 15A 4230-T120-K0DU-15A E-T-A 1: £47.08 5In Stock	Mfr. Part No. 4230-T120-K0DU-15A Mouser Part No 457-4230T120K0DU15	E-T-A	Circuit Breakers 489, 2P, DM, 480VAC/60VDC,D, 15A Learn More about E-T-A eta 4230 t mcb	Datasheet	5In Stock	£47.08 £41.42 £35.05 £29.81 £29.73	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	15 A	415 VAC	125 VDC	2 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 2P, DM, 480VAC/60VDC,D, 20A 4230-T120-K0DU-20A E-T-A 1: £49.92 1In Stock 6Expected 05/11/2026	Mfr. Part No. 4230-T120-K0DU-20A Mouser Part No 457-4230T120K0DU20	E-T-A	Circuit Breakers 489, 2P, DM, 480VAC/60VDC,D, 20A Learn More about E-T-A eta 4230 t mcb	Datasheet	1In Stock 6Expected 05/11/2026	£49.92 £38.45 £35.65 £30.60 £29.73	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	20 A	480 VAC	60 VDC	2 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, B, 10A 4230-T130-K0BE-10A E-T-A 1: £32.45 10In Stock	Mfr. Part No. 4230-T130-K0BE-10A Mouser Part No 457-4230T130K0BE10	E-T-A	Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, B, 10A Learn More about E-T-A eta 4230 t mcb	Datasheet	10In Stock	£32.45 £26.94 £25.64 £23.82 View £22.92 £22.28 Quote	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic					Toggle
Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, C, 16A 4230-T130-K0CE-16A E-T-A 1: £32.45 12In Stock 10Expected 12/11/2026	Mfr. Part No. 4230-T130-K0CE-16A Mouser Part No 457-4230T130K0CE16	E-T-A	Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, C, 16A Learn More about E-T-A eta 4230 t mcb	Datasheet	12In Stock 10Expected 12/11/2026	£32.45 £28.25 £25.33 £20.57 View £18.94 £18.64	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	16 A	415 VAC		3 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 489, 3P, DM, 480VAC/60VDC, C, 15A 4230-T130-K0CU-15A E-T-A 1: £73.70 2In Stock	Mfr. Part No. 4230-T130-K0CU-15A Mouser Part No 457-4230T130K0CU15	E-T-A	Circuit Breakers 489, 3P, DM, 480VAC/60VDC, C, 15A Learn More about E-T-A eta 4230 t mcb	Datasheet	2In Stock	£73.70 £61.11 £56.36 £49.35 £48.65	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	15 A	415 VAC		3 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, D, 40A 4230-T130-K0DE-40A E-T-A 1: £32.44 5In Stock	Mfr. Part No. 4230-T130-K0DE-40A Mouser Part No 457-4230T130K0DE40	E-T-A	Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, D, 40A Learn More about E-T-A eta 4230 t mcb	Datasheet	5In Stock	£32.44 £27.26 £23.30 £20.16 View £18.92 £18.64	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic	40 A	415 VAC		3 Pole	Toggle	- 35 C	+ 70 C	Non-Illuminated
Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, B, 25A 4230-T110-K0BE-25A E-T-A 1: £13.71 3In Stock	Mfr. Part No. 4230-T110-K0BE-25A Mouser Part No 457-4230T110K0BE25	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/60VDC, B, 25A Learn More about E-T-A eta 4230 t mcb	Datasheet	3In Stock	£13.71 £9.63 £8.92 £8.01 £7.17	Min.: 1 Mult.: 1	4230-T	Miniature Circuit Breakers	Thermal Magnetic					Toggle