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The Schurter Inc. 4400.03 is a thermal circuit breaker with a compact design and positively trip-free release. It is rated for AC 240 VAC and DC 48 VDC, with a current range of 0.05 to 16 A. The breaker offers a short circuit capacity of 2 kA (AC 240 V) and is designed for panel mounting with quick connect terminals.
This circuit breaker has an IP40 degree of protection on the front side and meets IEC 60934 standards. It is suitable for applications such as power tools, household equipment, power supplies and chargers, and industrial appliances. The operating temperature range is -5 °C to 60 °C.
Key features include a dielectric strength of > 1.5 kV (50 Hz) and > 2.5 kV (Impulse 1.2/50 μs), and an insulation resistance of > 100 MΩ (500 VDC). Endurance is rated at 500 switching cycles typical and a minimum of 50 switching cycles for reset type. It also includes vibration and shock resistance specifications according to IEC standards.
240 VAC and 48 VDC.
-5°C to 60°C.
Panel mount with quick connect terminals.
Conditional short circuit capacity 2 kA at 240 VAC (IEC 60934 PC1). Short circuit capacity Icn: 8 x In for In < 6.5 A, or 96 A for In ≥ 6.5 A.
>1.5 kV at 50 Hz and >2.5 kV impulse 1.2/50 μs.
Typical 500 switching cycles at 2 x Ir, minimum 50 switching cycles.
Approximately 10 g.