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The E-T-A 4230-T120-K0CU-50A is a thermal-magnetic miniature circuit breaker (MCB) designed for reliable circuit protection. It conforms to EN 60947-2, UL 1077, and UL 489 standards, making it suitable for a wide range of applications.
This 2-pole breaker has a current rating of 50A and can handle voltages up to 480VAC or 125VDC. It offers a high rupture capacity of 10,000A (AC/DC) according to UL 489 and IEC/EN 60947-2 (Icu), with an Ics rating of 7,500A AC and 10,000A DC. The breaker operates within an ambient temperature range of -35°C to +70°C.
Designed for DIN rail mounting, the 4230-T120-K0CU-50A features screw terminals compatible with cable cross-sections up to 35 mm². It has a mechanical life of 20,000 cycles and an electrical life of 6,000 cycles. The breaker meets stringent environmental testing standards, including vibration, shock, corrosion, and humidity resistance.
Typical applications include the protection of cables, motors, generators, transformers, thyristors, silicon rectifiers, computers, industrial process control systems, telecommunications equipment, and power supplies. Its robust construction and high rupture capacity ensure safe and dependable operation in demanding environments.
The circuit breaker has multiple voltage ratings: AC 240/415 V (IEC/EN 60947-2), AC 480Y/277 V (UL 1077 and UL 489), DC 80 V, 125 V (IEC/EN 60947-2), and DC 60 V, 125 V (UL 1077 and UL 489).
The operating temperature range is -35°C to 70°C.
The circuit breaker mounts on a DIN rail.
The rupture capacity is 7,500 A AC (Ics), 10,000 A DC (Ics), and 10,000 A (Icu) for AC/DC and UL 489.
It is approved under CSA C22.2 No 235, UL489, TÜV IEC/EN 60947-2, UL 1077/CSA-C22.2 No. 235, and UL 489/CSA-C22.2 No. 5.
It has 2 poles.
It is a thermal magnetic circuit breaker.