3-pole power disconnector 1250A BG4 N4-1250 266027

Professional load break switch for demanding installations

The BG4 N4-1250 load break switch is an advanced device designed for professional use in high-load electrical switchboards. Its three-pole design ensures reliable circuit disconnection at a continuous current of 1250A and an operating voltage of 690V, making it an ideal solution for industrial applications requiring high performance.

Design and electrical parameters

The device has been designed for extreme operating conditions, offering a rated operational power for AC-23 of 710 kW. The robust construction with dimensions of 210×207×401mm (width × height × depth) ensures optimal integration into switchgear systems. Pin connections guarantee secure and durable electrical connections, while the interlocking mechanism further enhances operational safety.

A short-circuit withstand of 25 kA and a wide operating temperature range from -25°C to +70°C enable fault-free operation in the most difficult environmental conditions. The IP20 protection rating protects against accidental contact with live parts while maintaining optimal ventilation for the device.

Functionality and versatility of application

The switch can serve as a main switch, emergency stop switch, or maintenance disconnect, offering maximum flexibility in electrical installation design. The lever-type operating element ensures intuitive operation and reliable control of the switching process.

The device supports an optional motor operator and voltage release, enabling automation of control processes and status signaling. The possibility of indirect mounting and installation in switchboards significantly expands its range of applications across various power system configurations.

Regulatory compliance and safety

The product meets the rigorous requirements of international IEC/EN 60947 standards and German VDE standards (VDE 0113, VDE 0160 part 100, VDE 0660), guaranteeing the highest level of electrical safety. Compliance with the IEC/EN 60204 standard ensures proper functioning as a component of a machine's main switch.

Disconnection characteristics are certified according to IEC/EN 60947-3 and VDE 0660, confirming the ability to safely break circuits under load. Additionally, the device meets the requirements of DIN EN 50274/VDE 0106 part 263 regarding protection against contact with active parts.