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The E-T-A 4230-T120-K0DU-20A 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 20A and can handle voltages up to 480VAC or 125VDC. It features a lever actuator and is designed for easy DIN rail mounting. The breaker offers a rupture capacity of up to 10,000A, ensuring safety in fault conditions.
Key technical specifications include an operating temperature range of -35°C to +70°C and a mechanical life of 20,000 cycles. The terminals are screw type, with a maximum tightening torque of 2 Nm and support cable cross-sections up to 35 mm².
Typical applications include 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 make it a dependable choice for demanding environments.
Voltage ratings vary by standard: IEC/EN 60947-2: 240VAC (1-pole), 415VAC (2/3/4-pole), DC 80V (1-pole), DC 125V (2-pole series). UL 1077: 277VAC (1-pole), 480Y/277VAC (2/3/4-pole), DC 60V (1-pole), DC 125V (2-pole series). UL 489: 120VAC (1-pole), 240VAC (2/3-pole), 277VAC (1-pole up to 32A), 480Y/277VAC (2/3-pole up to 32A), DC 60V (1-pole), DC 125V (2-pole series).
-35°C to +70°C.
Under IEC/EN 60947-2 (Ics): 7,500 A; (Icu): 10,000 A. Under UL 489: 10,000 A.
2 poles.
CSA C22.2 No 235 and UL 489.
DIN Rail.
IP20.