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This E-T-A 4230-T series miniature circuit breaker (MCB) is a thermal-magnetic type, suitable for protecting cables, motors, and other equipment. It features a 3-pole configuration with a 4A current rating and a voltage rating of 480VAC or 125VDC.
The breaker is designed for DIN rail mounting and has a lever actuator with visual status indication. It complies with EN 60947-2, UL 1077, and UL 489 standards, offering high rupture capacity.
Key specifications include a degree of protection IP20, an ambient temperature range of -35°C to +70°C, and mechanical/electrical life cycles of 20,000 and 6,000 respectively. The 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 computers, industrial process control systems, telecommunications equipment, and power supplies. It meets insulation coordination requirements for overvoltage category III and pollution degree 3.
The current rating is 4A.
The ultimate interrupting capacity (Icu) is 10,000 A under both AC and DC conditions per UL 489. The service interrupting capacity (Ics) is 7,500 A AC and 10,000 A DC.
Under IEC/EN 60947-2, it supports 240 VAC (1-pole), 415 VAC (2,3,4-pole), 80 VDC (1-pole), and 125 VDC (2-pole). Under UL 489, it supports 120 VAC (1-pole), 240 VAC (2,3-pole), 277 VAC (1-pole), 480Y/277 VAC (2,3-pole), 60 VDC (1-pole), and 125 VDC (2-pole).
It is a 3-pole circuit breaker.
It is designed for DIN rail mounting.
The ambient temperature range is -35°C to +70°C.
It is certified to CSA C22.2 No 235 and UL 489.