Circuit breaker S 311 1P C 20A 10000A TX3 404172

Reliable protection of electrical installations – Legrand S 311 circuit breaker

The S 311 circuit breaker is part of the TX³ series, designed to effectively protect electrical circuits against the effects of overloads and short circuits. The device is characterized by high reliability and ease of installation, making it an ideal choice for both professional installers and end users. The ability to work with various additional equipment, such as auxiliary contacts or release mechanisms, expands its functionality and allows it to be adapted to individual needs.

Construction and parameters – the key to safety

The S 311 circuit breaker with a rated current of 20A and characteristic C provides optimal protection for the electrical installation. Characteristic C means that the circuit breaker reacts more slowly to short-term current surges, which is particularly important for devices with motors (e.g. refrigerators, washing machines) that generate high starting currents. The rated short-circuit breaking capacity of 10 kA (at 230V and 400V) guarantees effective disconnection of the circuit in the event of a serious short circuit. Compact dimensions (width 1 module, depth 44 mm) allow for easy installation in electrical distribution boards.

• Overload and short-circuit protection: Protects the circuit from damage caused by excessive load or a sudden increase in current.
• Characteristic C: Ideal for circuits with devices generating high starting currents.
• High short-circuit breaking capacity (10 kA): Ensures quick and effective disconnection in the event of a failure.
• Mounting on TH35 rail: Enables easy and quick installation in standard distribution boards.
• Expandability: Compatible with additional functional modules increasing its capabilities.
• Protection class IP20: Protection against contact with fingers and solid objects larger than 12.5 mm.
• Rated voltage 230V: Standard voltage in most domestic and commercial installations.
• Energy limitation class 3: Provides adequate protection in the event of an electric arc.

The S 311 circuit breaker meets the requirements of EN 60898-1 and EN 60947-2 standards, which confirms its safety and compliance with applicable regulations. Flush mounting and the possibility of power supply from above or below increase installation flexibility and facilitate adaptation to specific mounting conditions. Made of high-quality materials, it guarantees long-lasting and trouble-free operation.