Overcurrent circuit breaker, 3P, Z characteristic, 16A, 10kA, AC | S203M-Z16 2CDS273001R0468

Electrical installation protection with ABB S203M-Z16 circuit breaker

This three-pole overcurrent circuit breaker from ABB with Z characteristic is a reliable protection for your electrical installation. Designed to protect against the effects of overloads and short circuits, it ensures safe operation and longer life of connected devices. Model S203M-Z16 with a rated current of 16A and a short-circuit breaking capacity of 10kA is ideal for use in residential, commercial and industrial buildings.

Characteristics and application

A circuit breaker with a Z characteristic is characterized by a delayed tripping time, which makes it particularly useful in circuits with high starting currents – for example, in the case of electric motors, transformers or refrigeration units. This minimizes the risk of unnecessary tripping of the circuit during device startup. Rated voltage of 400V and high short-circuit breaking capacity (up to 25kA at 230V and 15kA at 400V) guarantee effective protection even in difficult conditions. Mounting on a TH35 rail allows for easy and quick installation in a standard distribution board.

Construction and parameters for professionals

The S203M-Z16 circuit breaker has been designed with durability and reliability in mind. The IP20 degree of protection provides protection against accidental contact, and a wide range of operating temperatures (-25°C to +55°C) allows it to be used in various environmental conditions. The possibility of connecting wires with a cross-section from 0.75 mm² to 25 mm² (multi-strand) or from 0.75 mm² to 35 mm² (single-strand) provides flexibility during installation. Energy limitation class 3 confirms its effectiveness in suppressing arc fault energy, which further increases safety. In addition, the circuit breaker meets the requirements of EN 60898 and IEC 60947-2 standards, which guarantees its compliance with applicable safety standards.