Overcurrent circuit breaker S 304 4P C 25 A 6000 A series DX3 407930

Four‑pole circuit breaker DX³ series

This Legrand circuit breaker, with a rated current of 25 A and a C characteristic, provides reliable protection of electrical installations against overloads and short circuits. Designed for operation in AC 400 V circuits, it offers a high short‑circuit breaking capacity – 6 kA in accordance with IEC/EN 60898-1 and 10 kA according to IEC/EN 60947-2 at 400 V. Four poles and the ability to simultaneously disconnect the neutral pole (N) ensure comprehensive protection.

Design and application

The S 304 DX³ breaker is designed for easy mounting on a TH35 busbar. Its compact dimensions – width of 4 modules (70.8 mm) – allow efficient use of space in a distribution board. The permissible conductor cross‑section ranges from 1.5 mm² to 35 mm² for single‑core wires and from 1.5 mm² to 25 mm² for multicore cables. A wide operating temperature range (‑25 °C to +70 °C) enables use in various environmental conditions.

Circuit breakers from the DX³ series are ideal for both installers and end users due to their versatility and easy configuration. The option to equip them with additional auxiliary contacts, triggers, and drives from the DX³ series allows adaptation to specific circuit requirements. Compatibility with residual current devices further enhances the functionality of the protection system.

Key features and benefits

• High short‑circuit breaking capacity: Provides effective protection of the electrical installation in the event of a short circuit, minimizing the risk of damage and fire.

• C characteristic: Allows safe starting of devices with motors or other impulsive loads that generate high inrush currents without unnecessary tripping.

• Mounting on TH35 busbar: Facilitates and speeds up installation in electrical panels.

• Expandable: Compatibility with DX³ accessories enables customization to the specific application requirements.

• Wide operating temperature range: Suitable for various environmental conditions, both indoor and outdoor (in appropriate enclosures).

• Safety: Compliance with IEC/EN standards ensures a high level of user safety.

• Durable construction: Made from high‑quality materials guaranteeing long service life.