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Schneider Electric LA1LC072F — Motor Control Accessories

Schneider LA1LC072F TeSys undervoltage trip, 110 VAC, obsole

MPNLA1LC072F
Obsolete

Schneider Electric TeSys Integral, undervoltage trip LA1LC072F, 110 V AC 50 Hz, without time delay, instantaneous release.

Schneider Electric LA1LC072F datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LA1LC072F — Identification
ParameterValue
Product / component typeUndervoltage trip
Product rangeTeSys
LA1LC072F — Other specifications
ParameterValue
Time delayWithout time delay
Quantity per setSet of 10
Device short nameLA1LC
Inrush power in8 VA AC
Voltage release typeUndervoltage release Instantaneous
Threshold tripping voltage0.35...0.7 Uc
Coil voltage110 V AC 50 Hz 110...120 V AC 60 Hz
Control circuit voltage limits0.8...1.1 Uc
Hold-in power consumption in4 VA AC

Product details

The Schneider Electric LA1LC072F is an undervoltage trip accessory for the TeSys Integral starter range. It monitors the control circuit voltage and trips the starter instantaneously when voltage drops below the threshold — no intentional time delay. The coil pulls in at 110 V AC 50 Hz (110...120 V AC 60 Hz) and holds with 4 VA; inrush is 8 VA AC.

Tripping behaviour and control voltage limits

The threshold tripping voltage is 0.35...0.7 Uc — meaning the trip engages when line voltage falls to between roughly 38 V and 77 V on a 110 V nominal circuit. The control circuit voltage limits are 0.8...1.1 Uc (88...121 V AC), so the coil stays reliably energized across normal line sags and tolerances. Below the 0.35 Uc floor, the undervoltage release is guaranteed to drop out; above 0.7 Uc it may or may not hold depending on the exact point in the range.

Frequently asked questions

What is the control voltage for this undervoltage trip?

The LA1LC072F operates on 110 V AC 50 Hz (110...120 V AC 60 Hz). The coil inrush is 8 VA AC, holding power is 4 VA AC.

How does the tripping threshold work?

The instantaneous undervoltage release trips at 0.35...0.7 Uc. On a 110 V nominal circuit, that means the trip engages between roughly 38 V and 77 V. The coil holds reliably between 0.8 and 1.1 Uc (88...121 V AC).

How do I source this obsolete part?

Since the LA1LC072F is obsolete with no official successor, it is available through surplus and broker inventory. Submit an RFQ for current availability and pricing — no stock or lead-time figures are published.

MPN
LA1LC072F