3-pole power disconnector 800A BG4 N4-800 266025

Device designed for reliable disconnection in medium-voltage installations

The 3-pole power disconnector with a rated current of 800 A and an IP20 enclosure rating meets requirements for both routine operation and emergency situations. Thanks to its BG4 type construction and the possibility of indirect mounting in distribution boards, it is ideally suited for power supply systems with voltages up to 690 V AC – from industrial networks to public building installations.

Key features and practical benefits

• Main disconnector with locking mechanism – ensures secure engagement of the OFF position, increasing operational safety.
• Optional motor drive – enables remote control without the need for manual lever operation; ideal for hard-to-reach cabinets.
• Emergency switch function – allows immediate power disconnection in crisis situations, complying with IEC/EN 60204 standards.
• Pole-type main contact connection – guarantees stable and durable contact under high inrush currents.
• Short-time withstand current capability (Icw) = 25 kA – protects the installation against damage during sudden short circuits.
• Capability to be equipped with an undervoltage release – automatic disconnection when a preset voltage threshold is exceeded.
• Compact design (207 mm × 210 mm × 401 mm) and fixed mounting – facilitates integration into existing distribution boards.

Mounting and compliance with standards

The disconnector is intended for installation in distribution boards and for indirect mounting, allowing flexible placement in various electrical configurations. It complies with the following standards:

• IEC/EN 60947‑3 and VDE 0660 – insulation characteristics,
• IEC/EN 60204 and VDE 0113 – machinery safety requirements,
• VDE 0160 part 100 – protection against accidental contact with live parts.

Thanks to the black control element and rocker-lever handle, operation is intuitive for both the installer and the end user. The product is available in both main and service versions (maintenance disconnector), enabling its use throughout the full operational lifecycle of an electrical installation.