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This Schurter 4430.3742 is a 2-pole thermal circuit breaker for equipment protection. It offers a rated AC voltage of 240 VAC and a rated DC voltage of 60 VDC, with a current rating range of 0.05 to 20 A. The breaker type is thermal, and it is actuated by a rocker.
Key technical specifications include a conditional short circuit capacity of 1 kA (AC 240V) and a short circuit capacity of 300A (At In ≥ 3 A/ 240 VAC). The degree of protection is IP40 on the front side, which can be increased to IP54 with a factory-mounted protection cover. It has a dielectric strength of 4 kVAC and an insulation resistance greater than 100 MΩ at 500 VDC.
Mechanical and environmental specifications include a wide operating temperature range from -10 °C to 55 °C and a weight between 30 g and 50 g. The device is designed for panel mounting and has a mechanical lifetime of 50,000 switching cycles. It also meets vibration resistance standards up to 10 G @ 60 - 500 Hz and shock resistance of 30 G / 18 ms.
Applications for this circuit breaker include power tools, industrial appliances, power supplies, equipment for construction, and cleaning equipment. It is designed for reliable thermal overload protection with a positively trip-free release mechanism.
240VAC and 60VDC.
-10°C to 55°C.
4A, with a range of 0.05 to 20A.
2 poles.
Panel mount.
Thermal trip.
Rocker actuator.
