KJFD-12/MX Intelligent Electric Operation Solution, featuring an MCU chip integrated circuit for intelligent judgment of the closing and opening states of the load switch, performs electric operations on the mechanism according to customer instructions, enabling local closing and opening functions as well as remote closing and opening functions. It includes protection against motor undercurrent or jamming overload, ensuring the safety of critical components of the mechanism. The controller is equipped with a function to indicate equipment fault signals, greatly facilitating daily maintenance.

KJFD-12/NX Standard Electric Operation Plan, featuring circuit board terminal integration and mechanical electric operation converted by relay contacts within the controller, providing a cost-effective general-purpose AC/DC electric operation solution.

User Instructions

Closing operation:

Manual Closing: Mount the mechanism to the cabinet and secure it. Place the handle of the mechanism over the operation shaft located at the top of the mechanism, then rotate the handle clockwise approximately 90°. This compresses the coil spring, storing energy. Press the closing button to release the energy stored in the closing spring. The main circuit of the load switch closes under the power released by the mechanism.
Electrical Closing: Upon power-up and receiving the closing signal, the mechanism controller automatically identifies the on/off position of the load switch and the status of each interlock circuit. If all circuit states meet the conditions for closing, the controller initiates the energizing of the closing solenoid, achieving an instantaneous closure of the main circuit of the load switch.

Circuit Breaker Operation:

Manual Disconnect: Press the disconnect button to release energy, and under the release power, push the load switch to complete the main circuit disconnection. For electric disconnect, a disconnection signal is provided. The controller will automatically identify the load switch's on/off position and the status of each interlocked circuit. If all circuit statuses meet the conditions for disconnection, the controller will automatically activate the disconnect solenoid to release energy, achieving the main circuit disconnection of the load switch. The mechanism can perform main circuit closing or grounding closing operations when in the disconnection state.

Grounding and circuit breaking operations:

Grounding Closure: Insert the mechanism handle into the grounding operation shaft at the bottom of the mechanism, rotate clockwise approximately 90°. The stored energy spring of the mechanism is released instantaneously when compressed past the midpoint, pushing the grounding switch to complete the grounding closure. At this point, the mechanism interlock locks, preventing main circuit closure.
Grounding Breaker: Insert the mechanism handle into the grounding operation shaft at the bottom of the mechanism, rotate counterclockwise approximately 90°. As the grounding energy storage spring compresses past the midpoint, it releases energy instantly to push the grounding switch into the breaker position. At this point, the mechanism interlock is activated, allowing operation of the load switch for closing and opening.

Actuator external and installation dimensions