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The E-T-A 4230-T120-K0BE-40A 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 40A current rating and can handle voltages up to 480VAC or 125VDC. It offers a rupture capacity of 10,000A AC/DC according to UL 489 and IEC/EN 60947-2 standards. The breaker is suitable for DIN rail mounting and features a lever actuator with visual status indication.
Environmental testing includes resistance to vibration, shock, corrosion, and humidity, ensuring operation in demanding conditions. The ambient temperature range is -35°C to +70°C. Terminals are screw type, supporting cable cross-sections up to 35 mm² with a tightening torque of 2 Nm max.
Typical applications include protection of cables, motors, generators, transformers, thyristors, silicon rectifiers, computers, industrial process control systems, telecommunications equipment, and power supplies.
Under IEC/EN 60947-2: 240VAC, 415VAC, 80VDC, 125VDC. Under UL 1077: 277VAC, 480Y/277VAC, 60VDC, 125VDC. Under UL 489: 120VAC, 240VAC, 277VAC, 480Y/277VAC, 60VDC, 125VDC.
-35°C to +70°C.
The ultimate rupture capacity (Icu) is 10,000A under both AC and DC per IEC/EN 60947-2 and UL 489. The service rupture capacity (Ics) is 7,500A AC and 10,000A DC per IEC/EN 60947-2.
2 poles.
IP20.
Screw terminals with a maximum tightening torque of 2 Nm.
CSA C22.2 No 235 and UL 1077.