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This E-T-A 4230-T series miniature circuit breaker (MCB) is a thermal-magnetic type designed for reliable circuit protection. It is compliant with EN 60947-2, UL 1077, and UL 489 standards.
The breaker has a 1-pole configuration with a current rating of 63A and a voltage rating of 277VAC or 60VDC. It is suitable for DIN rail mounting and features a lever actuator for operation.
Key specifications include a rupture capacity of 10,000A (AC/DC) and an impulse withstand voltage of 4kV. The operating ambient temperature range is -35°C to +70°C. The terminals are screw type, supporting cable cross-sections up to 35 mm² with a maximum tightening torque of 2 Nm.
Typical applications include protection of cables, motors, generators, transformers, and electronic equipment in industrial process control systems, telecommunications, and power supplies.
The circuit breaker is rated for AC voltages up to 277V (UL 1077) and DC voltages up to 125V (UL 489). Specifically, IEC/EN 60947-2: 240VAC/80VDC; UL 1077: 277VAC/60VDC; UL 489: 480Y/277VAC/125VDC.
The ultimate breaking capacity (Icu) is 10kA under AC/DC per UL 489. The service breaking capacity (Ics) is 7.5kA AC and 10kA DC.
The ambient temperature range is -35°C to +70°C.
It is a single-pole (1-pole) circuit breaker.
It is designed for DIN rail mounting.
The mechanical life is 20,000 cycles and the electrical life is 6,000 cycles.
It has screw terminals with a maximum tightening torque of 2 Nm and accepts cable cross sections up to 35 mm².