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The E-T-A 4230-T120-K0CU-40A is a thermal-magnetic miniature circuit breaker (MCB) designed for reliable protection in various applications. It conforms to EN 60947-2, UL 1077, and UL 489 standards, ensuring broad compliance.
This 2-pole breaker features a 40A current rating and supports multiple voltage ratings, including up to 480VAC and 125VDC. It boasts a high rupture capacity of 10,000A (AC/DC) according to UL 489 and IEC/EN 60947-2 (Icu), and 7,500A (AC) / 10,000A (DC) for Ics.
Designed for DIN rail mounting, it includes screw terminals with a maximum tightening torque of 2 Nm and supports cable cross-sections up to 35 mm². The breaker operates within an ambient temperature range of -35°C to +70°C and exhibits robust environmental resistance, including vibration, shock, corrosion, and humidity tests as per IEC standards.
Typical applications include the protection of cables, motors, generators, transformers, thyristors, silicon rectifiers, computers, industrial process control systems, telecommunications equipment, and power supplies.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The current rating is 40A.
It supports AC voltage ratings up to 480V (1-pole, 2/3-pole) and DC voltage ratings up to 125V (2-pole in series).
The rupture capacity (Icu) is 10,000A for AC/DC, and Ics is 7,500A for AC and 10,000A for DC.
It is designed for DIN rail mounting.
The ambient temperature range is -35°C to +70°C.