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Schneider Electric LC1D40AU7 magnetic contactor, transparent housing, DIN-rail mountable

Schneider Electric

Schneider Electric LC1D40AU7 Magnetic Contactor 3 Pole 240V AC 40A

SKU CH-S5Q8-WNW6H

Three-pole IEC magnetic contactor rated 40 A inductive, 60 A resistive at 240 V AC with 1NO/1NC auxiliary contacts and DIN-rail mounting

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • 3-pole motor control up to 30 hp three-phase
  • 40 A inductive / 60 A resistive full-load ratings
  • 240 V AC coil with screw-clamp terminals
  • 1 NO + 1 NC auxiliary contacts built in
  • DIN-rail mountable 2.17 in wide compact body

Industrial Motor Control Contactor

The Schneider Electric LC1D40AU7 is a non-reversing three-phase magnetic contactor built for motor control and resistive load applications. It operates on a 240V AC coil voltage and uses screw clamp terminals for secure wiring. The unit mounts on DIN rails or plates and carries a 1NO/1NC auxiliary contact configuration for circuit flexibility. It is rated for inductive loads up to 40 A and resistive loads up to 60 A.

Thermal Performance and Power Draw

The contactor operates across a 50/60 Hz frequency range with an insulation voltage rating between 600 V and 690 V. Its operating wattage spans from 9 kW at 400V AC up to 30 kW at 660-690 VAC. Fire-resistant and insulation-resistant materials contribute to safe operation within the specified electrical parameters during normal duty cycles.

Sustained Load Behaviour

Mechanical durability is tested to six million cycles, supporting long-term reliability under repeated switching. The three normally open main contacts handle horsepower ratings from 3 hp at single-phase 120V AC to 30 hp at three-phase 600V AC. This unit does not suit applications requiring reversing contactors or configurations beyond the stated pole and auxiliary contact arrangement.

Highlights

  • 3-pole motor control up to 30 hp three-phase
  • 40 A inductive / 60 A resistive full-load ratings
  • 240 V AC coil with screw-clamp terminals
  • 1 NO + 1 NC auxiliary contacts built in
  • DIN-rail mountable 2.17 in wide compact body

Specifications

BrandSchneider Electric
ModelLC1D40AU7
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

How do I mount the LC1D40AU7 on a DIN rail and which wiring step is often missed?

Clip the 2.17in wide body onto a standard DIN rail; the step often missed is tightening the screw-clamp terminals to the specified torque so the 40 A inductive rating is reliable.

What maintenance or replacement will this contactor need over time?

Mechanical durability is tested to six million cycles; plan to replace the unit when the main or auxiliary contacts show wear beyond that cycle count.

What is the first limit that appears under sustained heavy use?

The 40 A inductive full-load amp rating is the first ceiling; exceeding it on motor loads will trip protection before the 60 A resistive or mechanical limits are reached.

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