Overcurrent breaker S 312 2P C 16 A 10000 A DX3 series 409202

Reliable Protection for Electrical Installations – Legrand DX³ S 312 Overcurrent Breaker

This two-pole Legrand DX³ series overcurrent breaker is a critical component of every safe and reliable electrical installation. Designed with both professional installers and end-users in mind, it provides effective protection against overloads and short circuits in AC circuits. With a rated current of 16A and voltage rating of 400V, it is an ideal solution for a wide range of applications in residential and commercial buildings.

Design and Functionality

The S 312 C 16A overcurrent breaker features a compact design, occupying only 2 module widths, simplifying installation in distribution boards. Its C characteristic ensures delayed tripping during brief current surges—particularly important when connecting devices with electric motors or other impulse loads. This prevents unnecessary tripping during equipment startup while maintaining full protection in case of genuine hazards.

The breaking capacity of 10 kA at 400V and 16 kA at 230V guarantees effective circuit disconnection during short circuits, minimizing the risk of damage to wiring and connected equipment. Additionally, the breaker complies with stringent safety standards (EN 60898 and IEC 60947-2), confirming its high quality and reliability. It supports single-core conductor cross-sections up to 35 mm² and multi-core conductors up to 25 mm², offering great flexibility during installation.

Installation and Operational Comfort

The DX³ series offers not only safety but also enhanced comfort for installers. Equipped with intuitive contact position indicators on the housing, it enables quick and reliable identification of the breaker’s status. The ability to lock the operating lever using Colring cable ties further enhances safety during maintenance and repair. Designed for flush mounting, it also supports the connection of additional accessories to expand functionality. The wide operating temperature range (-25°C to +70°C) allows for use in diverse environmental conditions.