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The Schurter Inc. 4430.2187 is a 2-pole thermal circuit breaker designed for equipment protection. It offers thermal overload protection with a positively trip-free release mechanism and rocker actuation. This circuit breaker has a rated voltage of 240 VAC and 60 VDC, with a rated current range of 0.05 to 20 A AC.
Key technical specifications include a conditional short circuit capacity of 1 kA AC and a short circuit capacity (Icn) that varies based on current rating. The device is protected against dust and water ingress with a front-side IP40 rating, which can be upgraded to IP54 with a factory-mounted protection cover. It boasts a dielectric strength of 4 kVAC and an insulation resistance greater than 100 MΩ at 500 VDC.
With a mechanical lifetime of 50,000 switching cycles, the 4430.2187 is built for durability. It operates reliably within a temperature range of -10°C to 55°C. The circuit breaker has undergone vibration resistance testing up to 10 G and shock resistance testing of 30 G / 18 ms. Its applications include power tools, industrial appliances, power supplies, construction equipment, and cleaning equipment.
The TA45 series circuit breaker features a snap-in mounting type and offers quick connect terminals (6.3 x 0.8 mm) or screw clamp terminals (M3.5 x 6 mm). It is available in non-illuminated or illuminated rocker versions.
It is rated for 240 VAC and 60 VDC.
Snap-in mounting with quick connect terminal 6.3 x 0.8 mm or screw clamp terminal M3.5 x 6 mm.
-10 to 55 °C.
Thermal.
Rocker.
Conditional short circuit capacity Inc: 1 kA at 240 VAC. Short circuit capacity Icn: 10xIn (max 3 cycles) for In<3 A / 240 VAC; 300 A (max 3 cycles) for In≥3 A / 240 VAC. For DC: 10xIn for In<3 A / 60 VDC; 120 A (max 3 cycles) for In≥3 A / 48 VDC.
IP40 front side, IP54 with factory mounted protection cover.