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The E-T-A 4230-T120-K0CU-25A 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.
This 2-pole breaker has a current rating of 25A and can handle voltages up to 480VAC or 125VDC. It features a lever actuator for easy operation and is designed for DIN rail mounting, making installation straightforward in control panels and electrical enclosures.
Key technical specifications include a rupture capacity of 10,000A (AC/DC) according to UL 489 and IEC/EN 60947-2. The breaker operates within an ambient temperature range of -35°C to +70°C and offers a degree of protection of IP20.
Typical applications for this circuit breaker include the protection of cables, motors, generators, transformers, and power supplies in industrial process control systems, telecommunications equipment, and computer peripheral systems.
The operating voltage depends on the standard and configuration. For IEC/EN 60947-2, 1-pole: AC 240 V, DC 80 V; 2,3,4-pole: AC 415 V; 2-pole in series: DC 125 V. For UL 1077, 1-pole: AC 277 V, DC 60 V; 2,3,4-pole: AC 480Y/277 V; 2-pole in series: DC 125 V. For UL 489, 1-pole: AC 120 V or AC 277 V (up to 32A), DC 60 V; 2,3-pole: AC 240 V or AC 480Y/277 V (up to 32A); 2-pole in series: DC 125 V.
The circuit breaker is designed for DIN rail mounting and has a degree of protection of IP20. Terminals are screw type.
The ambient temperature range is -35°C to +70°C.
The rupture capacity (Ics) is 7,500 A AC and 10,000 A DC. The ultimate rupture capacity (Icu) is 10,000 A AC/DC.
It is approved to CSA C22.2 No 235, UL 489, and UL 1077.
The nominal current rating is 25 A.
Mechanical life is 20,000 cycles, electrical life is 6,000 cycles.