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The E-T-A 4230-T110-K0DU-40A is a thermal-magnetic miniature circuit breaker (MCB) compliant with EN 60947-2, UL 1077, and UL 489 standards. It features a toggle actuation and visual status indication, suitable for DIN rail mounting.
This single-pole breaker has a current rating of 40A and supports multiple voltage ratings, including 277V AC (UL 1077) and 120V AC (UL 489). It also provides DC voltage ratings up to 60V DC (UL 1077 and UL 489).
Key electrical specifications include a rupture capacity of 10,000 A (AC/DC) to UL 489 and 7,500 A (AC) / 10,000 A (DC) to IEC/EN 60947-2. The breaker operates within an ambient temperature range of -35°C to +70°C.
Typical applications include protection of cables, motors, generators, transformers, thyristors, silicon rectifiers, computers, industrial process control systems, telecommunications equipment, and power supplies.
It supports multiple voltage ratings depending on the standard: IEC/EN 60947-2 (240VAC 1-pole, 415VAC multi-pole, 80VDC 1-pole, 125VDC 2-pole), UL 1077 (277VAC 1-pole, 480Y/277VAC multi-pole, 60VDC 1-pole, 125VDC 2-pole), and UL 489 (120VAC 1-pole, 240VAC 2/3-pole, 277VAC 1-pole, 480Y/277VAC 2/3-pole, 60VDC 1-pole, 125VDC 2-pole).
10,000 A (Icu and UL 489) AC/DC; 7,500 A AC and 10,000 A DC (Ics).
-35°C to +70°C.
DIN Rail.
Screw terminals accepting up to 35 mm² cable, with a stripping length of 14 mm and tightening torque of 2 Nm.
Mechanical life is 20,000 cycles; electrical life is 6,000 cycles.
TÜV (IEC/EN 60947-2), UL 1077, UL 489, and CSA C22.2 No. 5/235.