5SP4392-6
The 5SP4392-6 is a Siemens SENTRON 5SP4 high-current miniature circuit breaker. It is a three-pole circuit breaker with a rated current of 125A, B-curve thermal-magnetic trip, a rated voltage of 400V AC, a breaking capacity of 10kA according to EN 60898, and a width of 4.5mm. It is suitable for high-current distribution and resistive load circuit protection.
Product Positioning
The 5SP4 series is Siemens' high-current miniature circuit breaker extended to 125A, which can handle high-current power distribution with rail mounting; the 5SP4392-6 adopts the B curve, with a low instantaneous trip threshold, which is suitable for power distribution circuits that require rapid short circuit removal, such as resistive loads, lighting trunks and long-distance cables.
Core Product Advantages and Features
125A high current specification
A single-rail circuit breaker can carry a rated current of 125A, making it suitable for use as an incoming line protection for distribution panels or for high-current branch circuit protection.
B-curve jump characteristics
The B-curve has a lower instantaneous trip threshold, making it suitable for resistive loads and long cable loops, and it can clear short-circuit faults more quickly.
10kA breaking capacity
According to EN 60898, the rated breaking capacity is 10kA, the rated voltage is 400V AC, and the insulation voltage is 440V, which meets the general industrial and commercial power distribution needs.
Large diameter terminals
The terminals can be connected to 25–50 mm² single-core or stranded wires, with a locking torque of 2.5–3.5 N·m, facilitating the connection of high-current wires.