Product Introduction
The LFM series auxiliary switch is a non-manual operation device, suitable for controlling the closing, opening, interlocking, and signal circuits of various high-voltage switch operating mechanisms. The auxiliary switch adopts a modular structure, meaning that the number of switch switching levels (contact pairs) can be selected by the customer as needed. The drive shaft of the auxiliary switch can rotate 360° The Angle setting of the customer and the operation mechanism of the switch Angle are determined by the customer's institution. The LFM series auxiliary switches differ from the traditional frame-type wiring, discarding screws and improving wiring efficiency.
Switch selection
2K2B-----20K20B
Environmental conditions
1.Ambient temperature: -40℃ to +70℃;
2. Altitude: No more than 5,000 meters;
3. Humidity: The average relative humidity within 24 hours shall not exceed 95%. The average pressure of water vapor does not exceed 2.2KPa. The monthly average relative humidity shall not exceed 90%. The average pressure of water vapor does not exceed 1.8KPa.
4. The vibration acceleration shall not exceed 15m/s ²;
5. The surrounding air is not significantly polluted by dust, smoke, corrosive or flammable gases.
Working principle
The LFM series auxiliary switch adopts an indirect drive structure. It rotates the square shaft to drive the moving contact piece to rotate, causing the moving contact piece to move. The electrical circuit is controlled by the connection or disconnection of the moving and fixed contact pieces.
Switch structure
The LFM series auxiliary switches are flexible in operation, compact in structure, and safe and reliable. The switch is composed of multiple units with the same structure. It has various installation forms and offers multiple installation size combinations. The switch adopts a direct plug-in connection method, which is different from the traditional frame-type wiring. It eliminates screws and does not require tools to connect wires, thus improving the wiring efficiency. The switch also features a permanent magnetic blowout arc extinguishing function, which greatly enhances the switch's breaking capacity. The moving contact piece is made of high-quality alloy copper material, the fixed contact piece is made of high-quality brass, and the insulating piece is made of imported high-quality flame-retardant material. It is heat-resistant, has high strength, good insulation performance, and a reasonable structure to prevent dust. It can be well used in various electrical equipment.
Wiring method
Insertion and crimping
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