| Brand | Switchgear parts |
| Model NO. | 40.5kV SF6 gas filled cabinet circuit breaker spring manual operating mechanism |
| Rated voltage | 40.5kV |
| Rated normal current | 630A |
| Series | RNZ-40.5 |
This 40.5kV mechanism integrates spring-driven actuation with manual control, designed for SF6 gas-filled cabinet circuit breakers in medium-voltage power systems. It ensures reliable switching via spring (energy storage) for fast operation, while manual override guarantees functionality in power-free scenarios.
Equipped with mechanical interlocks to prevent misoperations (e.g., live switching), it enhances grid safety. Its sealed structure resists harsh environments, fitting substations, industrial plants, and renewable energy facilities. Compliant with IEC 62271 and GB standards, it offers long mechanical life (≥10,000 operations) for stable circuit protection and control.
0peratinginstructions for spring mechanism
Closing operation
Make sure to check the products without transportation will be fixed on thedeformation mechanism of load switch, the use of the operating handle is insertedinto the upper part of special institutions, clockwise rotation about 90 degrees, theload in the body under the action ofthe spring force main loop switch. Or the electricoperation, press the closing button, the motor drives the mechanism to completethe switch on and turn operation, at this time can not carry on the ground operation.
Switching operation
The operating handle is inserted into the upper part of the mechanism and rotatescounterclockwise about 90 degrees, and the load switch is operated under theaction of the force of the mechanism spring, and the main circuit is split. Or electricoperation, according to the switch button, the motor drives the mechanism tocomplete the switching operation, at this time, it can do the closing operation or thegrounding operation.
Earthing closing and earthing switching operation
The operating handle is inserted into the lower part of the mechanism and rotatesabout 90 degrees clockwise. The load switch is closed to the ground circuit underthe action of the force of the mechanism spring, so that the main circuit closingoperation can not be performed at this time.The operating handle rotates about 90 degrees counterclockwise, and the loadswitch switches the grounding circuit under the action ofthe force of the mechanismspring, which can be used for closing operation or grounding operation.
Modelcomposition and meaning
Operating mechanism shape and mounting dimensions
