Overcurrent circuit breaker, 3P, Z characteristic, 1A, 25kA, AC | S303P-Z1 2CDS383001R0218

Electrical installation protection with ABB S303P-Z1 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 overloads and short circuits, it ensures safe operation and longer life of devices. The Z characteristic makes it ideal for circuits with high surge current, e.g. with devices equipped with motors.

This circuit breaker combines compact dimensions (width of 3 modules) with high technical parameters, such as short-circuit breaking capacity up to 25kA at 400V and rated current of 1A. This makes it suitable for both home and commercial installations. Installation is simple and intuitive, and the IP20 degree of protection provides protection against accidental contact.

Key features and application

• Z characteristic: Provides a delayed response to short-term current surges, which is particularly important for devices with motors or transformers – protects against unnecessary tripping during start-up.
• Short-circuit breaking capacity: 25kA at 400V guarantees effective disconnection of the circuit in the event of a short circuit, minimizing the risk of damage and fire. Higher rated short-circuit capacity Icu value (100kA at 400V) provides an additional margin of safety.
• Rated current: 1A – ideal for protecting circuits with low current consumption, e.g. LED lighting or control systems.
• Three-pole: Provides complete protection of the entire circuit, including phase and neutral (if present).
• Width of 3 modules: Compact design allows for efficient use of space in the switchgear cabinet.
• Operating temperature range: From 0°C to 70°C – enables operation in various environmental conditions.
• Conductor cross-sections: Accepts solid conductors with a cross-section from 0.75 mm² to 35 mm² and stranded conductors from 0.75 mm² to 25 mm², providing great flexibility in conductor selection.

This circuit breaker is not only a protective element, but also an investment in the safety and reliability of your electrical installation. Thanks to its solid construction and high-quality workmanship, you can be sure of its long-lasting and trouble-free operation.