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The Schurter 4430.1943 is a 2-pole thermal circuit breaker designed for overcurrent protection in electrical circuits. It is rated for 3A continuous current and can handle voltages up to 240VAC and 60VDC. The device uses a thermal tripping mechanism, providing reliable protection against sustained overloads.
Key electrical specifications include a dielectric strength of 4 kVAC and insulation resistance greater than 100 MΩ at 500 VDC. The circuit breaker offers a mechanical lifetime of 50,000 switching cycles and similar electrical lifetimes for both AC and DC loads. It can withstand overload conditions of at least 40 trips at 6x rated current for AC and 4x rated current for DC.
The device features a rocker actuator and provides IP40 degree of protection, which can be upgraded to IP54 with an optional factory-mounted protection cover. It is designed to operate in temperatures ranging from -10°C to 55°C and can withstand vibration and shock per IEC 60068-2-6 and IEC 60068-2-27 standards.
The operating temperature range is -10°C to 55°C.
The rated voltage is 240 VAC and 60 VDC.
The degree of protection is IP40, and IP54 with a factory-mounted protection cover.
The mechanical lifetime is 50,000 switching cycles.
The dielectric strength is 4 kVAC.