Overcurrent circuit breaker, 3P, C characteristic, 16A, 10kA, AC | SU203M-C16 2CDS273337R0164

Overcurrent circuit breaker – protection of installations and devices

This three-pole automatic circuit breaker with C characteristic is a key element of every safe electrical installation. It provides reliable protection against overloads and short circuits, protecting both wires and connected devices. It is designed to protect circuits with higher impedance, where inrush currents occur when switching on receivers (e.g. motors, transformers). The C characteristic allows it to react more slowly to short current surges, so it tolerates starting devices with a motor well.

Construction and parameters – what is worth knowing?

The circuit breaker is designed to operate in installations with a rated voltage of 400V, and its rated current is 16A. The rated short-circuit breaking capacity (Icu) at 400V is 15kA, which guarantees effective disconnection of the circuit in the event of a serious failure. The width of the circuit breaker, which is 3 modules, facilitates mounting in electrical distribution boards. The degree of protection IP20 means that it is protected against accidental contact, but not against the effects of water.

Installation and application – for the installer and user

The installation of the circuit breaker is standard and requires compliance with applicable standards and safety regulations. The cross-section of the connected wires can range from 0.75 mm² to 25 mm² for multi-strand wires and from 0.75 mm² to 35 mm² for single-strand wires. This circuit breaker finds application in residential, commercial and industrial buildings – wherever reliable protection of electrical circuits is required. Thanks to the possibility of additional equipment, it can be adapted to the specific needs of a given installation. It should be remembered that electrical installation work should be carried out by a qualified electrician.