In remote control switching, which statement correctly describes the function of the split low-voltage coil?

In remote control switching, which statement correctly describes the function of the split low-voltage coil?

• A. It energizes the high-voltage circuit directly.
• B. It moves the line voltage contact armature to the ON (latched) position.
• C. It shuts down the system immediately.
• D. It is used only for signaling, not switching.

Answer: (B)

In remote control switching, a low-voltage coil drives the action of the high-voltage switch. Energizing the split low-voltage coil creates a magnetic field that pulls the line-voltage contact armature into the ON position and, with the split/latching design, holds it there so the high-voltage circuit remains closed even after control power is removed. This allows safe, remote control of the high-voltage line without sending line voltage through the control circuit. It isn’t energizing the high-voltage circuit directly, isn’t solely signaling, and isn’t about shutting the system down. The coil’s role is to move and latch the line-side contacts to the ON state.

In remote control switching, a low-voltage coil drives the action of the high-voltage switch. Energizing the split low-voltage coil creates a magnetic field that pulls the line-voltage contact armature into the ON position and, with the split/latching design, holds it there so the high-voltage circuit remains closed even after control power is removed. This allows safe, remote control of the high-voltage line without sending line voltage through the control circuit. It isn’t energizing the high-voltage circuit directly, isn’t solely signaling, and isn’t about shutting the system down. The coil’s role is to move and latch the line-side contacts to the ON state.