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This Schneider Electric Compact NSX undervoltage coil (MPN: LV429407) is designed for use with load switches and power circuit breakers, providing protection by tripping the circuit when voltage drops below a safe level. Its primary benefit is enhancing electrical system safety by preventing damage from undervoltage conditions. A key consideration is its specific compatibility with load switches and power circuit breakers, not being suitable for motor safety switches or overload relays.
| Series | Compact NSX |
|---|---|
| Model Part Number | LV429407 |
| Brand | Schneider Electric |
An undervoltage coil is a safety device that trips a circuit breaker or load switch when the supply voltage drops to a predefined low level. This prevents damage to connected equipment that could occur if they operate under insufficient voltage.
This specific model (LV429407) operates on a rated control voltage of 220-240V AC at both 50Hz and 60Hz.
No, this undervoltage coil is specifically designed for use with Schneider Electric Compact NSX series load switches and power circuit breakers. It is not intended for motor safety switches or overload relays.
It connects via screw terminals to the designated points on the compatible Compact NSX device, requiring a 220-240V AC control voltage supply.
If the control voltage is below the operational threshold required for the coil to remain energized, it will act as if the voltage has dropped, causing it to trip the associated breaker or switch. It requires the rated voltage (220-240V AC) to hold the circuit closed.
The undervoltage coil itself does not have a manual reset. Resetting the associated circuit breaker or load switch after it has tripped is typically required to restore power.
The product weighs approximately 0.2645547144 pounds.
Verify that the control voltage supplied to the coil is within the specified range (220-240V AC). Ensure the wiring connections are secure and correctly made. Confirm that the coil is compatible with the specific breaker/switch model and that it is not damaged. Test the coil's functionality directly if possible.
Check for loose wiring connections to the coil or the breaker. Ensure the control voltage is stable and not experiencing transient surges. Inspect the associated breaker or load switch for internal faults. Verify that the coil is not incorrectly wired or shorted.
Trace the control voltage wiring from the source to the coil. Check fuses or circuit breakers in the control voltage supply circuit. Ensure the source of the control voltage is active and providing the correct voltage (220-240V AC).
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