S203-Z1 overload protection switch 2CDS253001R0218

ABB S203-Z1 Overcurrent Circuit Breaker – Reliable Installation Protection

The ABB S203-Z1 overcurrent circuit breaker is a three-pole device designed to protect electrical circuits from the effects of overloads and short circuits. It is characterized by high efficiency and durability, making it an ideal choice for both professional installers and end-users. This model, with Z characteristic, performs particularly well in applications requiring a quick response to short-term current surges.

Construction and Application

The S203-Z1 circuit breaker is intended for mounting on a DIN TH35 rail (both 35x15 mm and 35x7.5 mm). Its compact dimensions – a width of 3 modules – allow for efficient use of space in the distribution board. The device has screw terminals, which allow connection of wires with a cross-section from 0.75 mm² to 25 mm² (multi-strand) and from 0.75 mm² to 35 mm² (solid). This allows it to be adapted to various types of wires used in electrical installations. This circuit breaker finds application in residential, commercial and industrial buildings where reliable protection against overloads and short circuits is required.

Key Features and Benefits

• Z Characteristic: provides a quick response to short-term current surges, protecting sensitive electronic devices.
• Rated current 1A: ideal for protecting circuits with low power consumption, such as lighting or electrical outlets in office spaces.
• High short-circuit capacity: 20 kA at 230 V and 10 kA at 400 V guarantees effective circuit disconnection in the event of a short circuit.
• Overvoltage category III: provides protection against overvoltages in installations with a medium level of exposure to interference.
• Wide operating temperature range: from -25°C to +55°C allows the circuit breaker to be used in various environmental conditions.
• Protection degree IP20: provides basic protection against accidental contact and access to live parts.
• Possibility of additional equipment: allows expanding the functionality of the circuit breaker by mounting additional modules or accessories.
• Energy limitation class 3: provides a high level of safety in the event of an electric arc.

The ABB S203-Z1 circuit breaker is a solid and reliable solution for anyone who values safety and comfort when using an electrical installation. Its versatility and ease of installation make it a product readily chosen by professionals and demanding individual users.