SZ203-C20 overcurrent circuit breaker, 3P, C characteristic, 20A, 6kA, AC 2CDS253025R0204

3-Pole Overcurrent Circuit Breaker – Reliable Installation Protection

This three-pole overcurrent circuit breaker from the ABB SZ200 series is a key element of any safe electrical installation. Designed to protect against overloads and short circuits, it ensures stable operation of electrical circuits in residential and commercial buildings. Characteristic C makes it particularly well-suited for circuits with receivers with high inrush current, such as motors, transformers or heating devices. The rated short-circuit capacity of 6kA guarantees effective disconnection in the event of a failure, minimizing the risk of damage and fire.

Design and Installation – Simplicity and Functionality

The SZ203-C20 circuit breaker is mounted on a standard DIN rail TH35-7.5 or TH35-15, which facilitates its integration with existing distribution boards. Compact dimensions (3 modules wide) allow for optimal use of space in switchgear cabinets. Two-way screw terminals provide secure and quick connection of conductors with a cross-section from 0.75 mm² to 35 mm², both solid and stranded. This makes installation quick and trouble-free for the electrician. Additionally, the contact position indicator (ON/OFF) facilitates visual control of the circuit breaker status.

Parameters and Compliance – Safety Confirmed by Standards

The circuit breaker meets the requirements of EN 60898-1, which guarantees its high quality and reliability. It operates at a rated voltage of 400V AC and a frequency of 50-60Hz. The rated insulation voltage Ui is 440V, and the rated impulse voltage (Uimp) is 4kV, providing additional safety in the event of overvoltage. Energy limitation class 3 and surge category III confirm its resistance to interference in the electrical network. Protection degree IP20 protects against accidental contact, and a wide range of operating temperatures (-25°C to +55°C) allows its use in various environmental conditions.