The Schneider Electric LA1LC072Q is an instantaneous undervoltage trip from the TeSys range, designed to drop out a contactor or starter when the control voltage falls below a set threshold. It is a service part — ordered as a set of 10 — for maintaining or building out TeSys control circuits. Rated for a control circuit voltage of 380/400 V AC at 50 Hz, with an operating range of 0.8 to 1.1 Uc and a tripping threshold of 0.35 to 0.7 Uc. That means it holds the contactor closed above roughly 266 V and releases it somewhere between 133 V and 266 V, depending on the exact setting and load. Inrush power draw is 8 VA AC; holding power is 4 VA AC. No time delay — the release is instantaneous when the voltage drops below the threshold, so it responds to a sag without waiting.
Schneider LA1LC072Q TeSys undervoltage trip, 380/400 V AC 50
MPNLA1LC072Q
Active
Schneider Electric TeSys range, LA1LC072Q undervoltage trip, 380/400 V AC 50 Hz, instantaneous release, set of 10.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Product / component type | Undervoltage trip |
| Product range | TeSys |
| Parameter | Value |
|---|---|
| Time delay | Without time delay |
| Quantity per set | Set of 10 |
| Device short name | LA1LC |
| Inrush power in | 8 VA AC |
| Voltage release type | Instantaneous Undervoltage release |
| Threshold tripping voltage | 0.35...0.7 Uc |
| Coil voltage | 380/400 V AC 50 Hz |
| Control circuit voltage limits | 0.8...1.1 Uc |
| Hold-in power consumption in | 4 VA AC |
Product details
Frequently asked questions
What is the TeSys range for this part?
The LA1LC072Q belongs to the Schneider Electric TeSys range, which covers contactors, overload relays, and control accessories for motor management and power switching.
What is the tripping voltage range?
The undervoltage trip releases between 0.35 and 0.7 Uc. For a 400 V control circuit, that means it trips somewhere in the 140 V to 280 V band, depending on the actual control voltage and tolerance.
How is this part packaged?
It ships as a set of 10 units, one package containing ten individual undervoltage trips.
MPN
LA1LC072Q