Overcurrent circuit breaker S 314 4P B 40 A 10000 A TX3 series 404158

Electrical Installation Protection with Legrand S 314 Circuit Breaker

The S 314 thermal-magnetic circuit breaker from the TX³ series is a reliable protective device designed to safeguard electrical installations against the effects of overloads and short circuits. This four-pole device, rated at 40 A with a Type B characteristic, provides effective protection in circuits requiring rapid response to current increase. It is ideally suited for protecting lighting, socket, and other sensitive loads vulnerable to voltage spikes.

Construction and Functionality

The S 314 breaker features a robust design and easy DIN-rail mounting. Engineered to integrate seamlessly with auxiliary devices such as auxiliary contacts and undervoltage trip units, it allows for system expansion and customization to meet specific requirements. The separable neutral pole enhances operational safety and simplifies maintenance tasks. With a mounting depth of 44 mm, it fits perfectly into standard electrical distribution boards.

Key Features and Specifications

• Rated current: 40 A – Provides adequate protection for circuits with medium power consumption.
• Type B characteristic – Ensures fast response to current increase, protecting against damage from short circuits or overloads. Type B allows slower tripping on brief current spikes, making it well-suited for motor-starting applications.
• High short-circuit breaking capacity – 10 kA at 400 V and 16 kA at 230 V – ensures installation safety and minimizes failure risk.
• Four-pole construction – Enables full circuit protection within a single device.
• IP20 protection rating – Prevents accidental contact and ingress of solid objects larger than 12.5 mm.
• Flush-mount design – Allows for aesthetic and discreet installation within walls or building structures.
• Additional equipment options allow expansion of functionality via addition of auxiliary contacts, undervoltage trip units, and other accessories.
• 4-module width – Compact dimensions facilitate installation in space-constrained electrical panels.
• Rated voltage: 400 V – Designed for use in both three-phase and single-phase networks up to 400 V.

The S 314 overcurrent circuit breaker is a robust and reliable solution for professionals and homeowners alike who prioritize safety and comfort in their electrical installations. It protects circuits against overloads and short circuits—standard protection offered by devices in this class.