Overcurrent breaker S 304 4P D 40 A 6000 A, TX3 series 403776
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TECHNICAL DATA
Sales unit dimensions and weight: 1 pcs
Overcurrent breaker S 304 4P D 40 A 6000 A, TX3 series 403776
Electrical Installation Protection with Legrand S 304 TX³ Overcurrent Switch
The S 304 4P D 40A overcurrent switch from the TX³ series provides reliable protection for electrical installations against the effects of overloads and short circuits. Designed for both residential and professional applications, it ensures safe operation and long-term protection of circuits. It features a high short-circuit breaking capacity, minimizing the risk of damage and fire.
Construction and Functionality
The construction of this four-pole overcurrent switch is based on proven Legrand technology, guaranteeing high quality and durability. The D characteristic ensures delayed tripping during brief overloads, which is especially critical for devices with motors or other components generating high inrush currents—such as pumps, compressors, or power tools. Mounting on a TH35 rail is quick and intuitive, and compatibility with comb or pin busbars increases installation flexibility.
Key Features and Benefits
- High short-circuit breaking capacity: 6 kA at 400 V and 10 kA at 230 V – effective protection against short-circuit consequences.
- D characteristic: Ideal for circuits with high inrush current devices, minimizing unnecessary tripping.
- Four-pole design: Protects all phases and the neutral conductor (simultaneous disconnection of the N pole).
- TH35 rail mounting: Standard mounting simplifies integration with existing installations.
- Expandability: Compatibility with DX³ series accessories (auxiliary contacts, trip units) allows customization to individual needs.
- 4-module width: Compact dimensions enable efficient use of space in distribution boards.
- Rated voltage 400 V and rated current 40 A: Parameters tailored to typical circuits in residential and commercial buildings.
- IP20 protection rating: Protection against finger contact – safe operation under standard conditions.
Applications
The S 304 TX³ overcurrent switch is suitable for:
- Electrical installations in residential buildings (houses, apartments).
- Electrical installations in commercial buildings (offices, shops).
- Protection of lighting, socket circuits, and power lines supplying high-power electrical equipment.
- Electrical distribution boards as a core component of comprehensive overcurrent and short-circuit protection systems.