Overcurrent circuit breaker, 3P, B characteristic, 16A, 6kA, AC | S203-B16 2CDS253001R0165

3-pole Overcurrent Circuit Breaker – Reliable Installation Protection

This three-pole overcurrent circuit breaker with B characteristic is a key element of every safe electrical installation. It provides effective protection against overloads and short circuits, protecting both devices and people. It is a device designed for mounting on a DIN rail, which facilitates its integration with existing distribution boards. Its compact size – occupying 3 modules – allows for optimal use of space in the switchgear cabinet.

Functionality and technical parameters

The S203-B16 circuit breaker is characterized by a rated current of 16A and a short-circuit breaking capacity of up to 6kA at 400V AC. The B characteristic means that the circuit breaker reacts quickly to an increase in short-circuit current, but is more tolerant of short-term current surges during the start-up of devices such as motors. The rated insulation voltage Ui is 440V, and the rated impulse withstand voltage Uimp is 4kV. The device is designed to operate at temperatures from -25°C to +55°C and has a protection degree of IP20, which means protection against touching with a finger and solid objects larger than 12.5 mm. The possibility of additional equipment allows the circuit breaker to be adapted to specific installation needs.

Installation and application

This circuit breaker is used in electrical installations of residential, commercial and industrial buildings. The possibility of connecting wires with a cross-section from 0.75 mm² to 35 mm² (solid) or from 0.75 mm² to 25 mm² (stranded) ensures compatibility with various types of wires. Mounting is done by snapping onto the DIN rail, which is standard for this type of device. Energy limitation class 3 and surge category III guarantee adequate protection under potential disturbances in the electrical network. Compliance with EN 60898-1 and EN60947-2 standards confirms its safety and reliability.