Schneider Electric TeSys D Series Contactors – LC1D40M7C

Technical Dossier

Product Details And Specifications

Schneider Electric TeSys D Series Technical Notes

The Schneider Electric TeSys D series (LC1D / LC1DT) is one of the most widely deployed contactor families in global heavy industry. Installed across chemical processing plants, nuclear auxiliary systems, petroleum refineries, offshore platforms, and large-scale HVAC infrastructure, the TeSys D range covers motor control applications from 9 A to 150 A (AC-3 duty). Its IEC 60947-4-1 compliance, standardized 3-pole and 4-pole configurations, and broad coil voltage selection (24 V DC to 600 V AC) make it the default specification in both OEM panel builds and MRO replacement programs. The LC1D40M7C specifically is a 3-pole, 40 A (AC-3), 220 V AC 50/60 Hz coil contactor rated for 18.5 kW at 400 V — a high-volume SKU in pump, compressor, and conveyor motor control circuits.

The Evolution of TeSys D Architecture

The TeSys D platform succeeded the earlier TeSys B and TeSys F families in the mid-1990s, consolidating Schneider Electric's contactor lineup under a unified DIN-rail-mountable form factor. Key architectural milestones include the introduction of the integrated auxiliary contact block interface (top and side mount), the standardized LA1D / LA1DN auxiliary contact range, the LC1DT four-pole variant for capacitor bank switching, and the addition of the LC1DWK12 reversing contactor assembly. The series maintained backward-compatible mounting footprints through multiple coil technology revisions — from conventional laminated-core electromagnets to the low-consumption EverLink coil variants. Compatibility with the TeSys T motor management relay (LTM R) and the TeSys U starter-controller was introduced to extend the platform into intelligent motor control architectures. For installations originally specified with TeSys B or legacy Telemecanique CA series contactors, direct dimensional substitution is possible in most frame sizes using TeSys D equivalents.

TeSys D Full Catalog & Functionalities (SKU List)

The following SKUs represent the core TeSys D range organized by functional category. All models listed are genuine Schneider Electric part numbers with confirmed production history.

3-Pole IEC Contactors (AC-3 Duty — Motor Control)

• LC1D09M7C: 9 A / 4 kW at 400 V, 220 V AC coil, 3-pole, DIN rail mount
• LC1D12M7C: 12 A / 5.5 kW at 400 V, 220 V AC coil, 3-pole, standard frame
• LC1D18M7C: 18 A / 7.5 kW at 400 V, 220 V AC coil, 3-pole, screw clamp terminals
• LC1D25M7C: 25 A / 11 kW at 400 V, 220 V AC coil, 3-pole, integrated 1NO+1NC aux
• LC1D32M7C: 32 A / 15 kW at 400 V, 220 V AC coil, 3-pole, motor circuit protection compatible
• LC1D40M7C: 40 A / 18.5 kW at 400 V, 220 V AC coil, 3-pole — current page SKU
• LC1D50AM7C: 50 A / 22 kW at 400 V, 220 V AC coil, 3-pole, high-cycle industrial duty
• LC1D65AM7C: 65 A / 30 kW at 400 V, 220 V AC coil, 3-pole, bolt-on terminal option
• LC1D80AM7C: 80 A / 37 kW at 400 V, 220 V AC coil, 3-pole, large frame
• LC1D95AM7C: 95 A / 45 kW at 400 V, 220 V AC coil, 3-pole, heavy motor starter duty
• LC1D115M7C: 115 A / 55 kW at 400 V, 220 V AC coil, 3-pole, industrial compressor control
• LC1D150M7C: 150 A / 75 kW at 400 V, 220 V AC coil, 3-pole, maximum standard frame rating

4-Pole Contactors (Capacitor Switching / AC-6b Duty)

• LC1DT20M7C: 4-pole, 20 A, 220 V AC coil, capacitor bank switching, AC-6b rated
• LC1DT25M7C: 4-pole, 25 A, 220 V AC coil, power factor correction panel use
• LC1DT40M7C: 4-pole, 40 A, 220 V AC coil, high-capacity capacitor switching duty

DC Coil Variants (24 V DC — PLC / DCS Direct Drive)

• LC1D09BD: 9 A, 24 V DC coil, 3-pole, direct PLC output compatible
• LC1D25BD: 25 A, 24 V DC coil, 3-pole, DCS hardwired output interface
• LC1D40BD: 40 A, 24 V DC coil, 3-pole, equivalent DC variant of LC1D40M7C

Reversing Contactor Assemblies

• LC2D40M7C: Reversing contactor, 40 A, 220 V AC coil, mechanically and electrically interlocked pair
• LC2D25M7C: Reversing contactor, 25 A, 220 V AC coil, forward/reverse motor control

Sourcing Hard-to-Find & Obsolete TeSys D Parts

While the TeSys D series remains in active production as of 2026, specific coil voltage variants, early-generation auxiliary contact blocks (LA1DN22, LA1DX10), and legacy surge suppressor modules (LAD4RCE, LAD4RCU) have been progressively phased out of standard distribution channels. DriveKNMS maintains a dedicated inventory of discontinued TeSys D accessories and low-volume coil variants sourced through authorized secondary market channels and factory overstock programs. For plant operators running TeSys D contactors in safety-critical motor control circuits — where like-for-like replacement is required by site maintenance procedures — DriveKNMS provides traceability documentation, original packaging verification, and date-code disclosure on all supplied units. Lifecycle extension support is available for installations where re-engineering to TeSys Deca (LC1E series) is not yet feasible due to panel space constraints or control system integration costs.