Switch disconnector with fuse 3P+PEN/400A SZ400.41

Network disconnector with fuse for network applications

The 3P+PEN fuse disconnector with a current of 400A, model SZ400.41 by Ensto, is a reliable device designed for safely disconnecting circuits in low-voltage installations. The disconnector design allows mounting on poles, brackets or in switchgear, making it a versatile solution for both professional installers and end-users. The fourth pole (PEN) is permanently connected inside the housing, simplifying installation and providing additional safety.

Construction and application

The SZ400.41 disconnector is dedicated to working with NH2 type fuse links with a maximum current of 400A and fuses of size '1' up to 250A. Made of durable materials – aluminum and weather-resistant plastics – it guarantees long-lasting and trouble-free operation. It is intended for overhead and cable lines, and its solid construction allows operation even in harsh environmental conditions. The ability to operate from the ground using the ST33 maneuvering rod increases comfort and safety.

Key features and benefits

• Versatility: Possibility of mounting on poles (PEK43, PEK49), in switchgear or directly on brackets.
• Safety: Permanent connection of the PEN pole minimizes the risk of incorrect connection and provides additional protection.
• Durability: Frost and UV resistant plastics and galvanized or stainless steel elements ensure long device life.
• Compatibility: Adapted to NH2 fuse links with different current values (up to 400A).
• Easy installation: Intuitive design facilitates installation and connection of aluminum or copper wires with a cross-section of 50-240 mm². KG43.6 clamps (8 pcs) are included.
• Compliance with standards: Meets the requirements of EN 60947-3:2013 and IEC 60947-3 standards, guaranteeing safety and reliability.
• Switching capacity: Up to 2400A – provides effective protection of the installation against the effects of short circuits.

The SZ400.41 disconnector is an investment in the safety and reliability of your electrical installation. Its solid construction, compliance with standards and ease of use make it an ideal choice for both professionals and demanding end-users.