Modular isolating switch 3P 125A 400VAC SBN399

Modular isolating switch – reliable disconnection in the installation

This three-pole Hager SBN399 isolating switch is a key element of every safe and functional electrical installation. Designed to operate at 400V and 125A, it provides effective circuit disconnection, guaranteeing safety during maintenance and repairs. Its modular design, taking up 3 modules, simplifies mounting in distribution boards.

Functionality and technical parameters

The SBN399 switch is characterized by a high switching capacity of 2.115 kA, making it suitable for protecting circuits with high short-circuit current. Short-circuit strength (Icw) is 1.5 kA. The IP20 protection class provides protection against accidental contact, and the lack of a signaling lamp simplifies the design and increases reliability. Designed to operate at temperatures from -20°C to 70°C, it will perform well in various environmental conditions.

• Safety first: Rated switching capacity of 2.115 kA guarantees effective disconnection in the event of a failure.
• Compact dimensions: Width of 3 modules allows for easy mounting even in crowded distribution boards.
• Versatility: Rated current of 125A and voltage of 400V make the switch compatible with most standard installations.
• Durability: Made of high-quality materials, it ensures long-lasting and trouble-free operation.
• Simple installation: Screw terminals allow for quick and secure connection of wires with a cross-section from 6 mm² to 50 mm² (rigid) or from 6 mm² to 35 mm² (flexible).
• Compliance with standards: The product meets applicable safety standards, ensuring compliance with installation requirements.

Application and installation

The SBN399 isolating switch is used in electrical installations of residential, commercial and industrial buildings. It is ideal for disconnecting individual circuits during maintenance or repair work, ensuring the safety of people working on the installation. Mounting is done on a standard TH35 rail, which facilitates integration with the existing electrical infrastructure. The installation depth is 68 mm, which should be taken into account when planning space in the distribution board.