Motor Control & Industrial Automation Solution – Schneider Electric LC1D40M7C | TeSys D Series
Where This Product Is Used
The Schneider Electric LC1D40M7C is a 3-pole AC contactor from the TeSys D series, engineered for demanding industrial switching applications. Engineers and system integrators specify this model across a wide range of sectors:
- Motor Starter Panels: Direct-on-line (DOL) and star-delta motor starters in pump stations, compressors, and conveyor systems up to 18.5 kW / 400 V.
- HVAC Systems: Fan coil units, air handling units, and chiller compressor control in commercial buildings and data centers.
- Manufacturing & Assembly Lines: Machine tool control, robotic cell power distribution, and automated production line switching.
- Water Treatment Plants: Submersible pump control, dosing pump panels, and blower motor management.
- Oil & Gas Auxiliary Panels: Utility motor control centers (MCC) for auxiliary equipment in upstream and downstream facilities.
- Building Automation: Lighting control, elevator auxiliary circuits, and BMS-integrated load switching.
Technical Specifications
- Part Number / SKU: LC1D40M7C
- Series: TeSys D
- Brand: Schneider Electric
- Pole Configuration: 3-Pole (3P) + 1 NO auxiliary contact
- Rated Operational Current (Ie): 40 A (AC-3, 400 V)
- Motor Power Rating: 18.5 kW @ 400 V / 7.5 kW @ 230 V
- Coil Voltage: 220 V AC, 50/60 Hz (M7 designation)
- Coil Consumption (Inrush / Sealed): ~70 VA / ~7 VA
- Thermal Current (Ith): 50 A
- Utilization Category: AC-3 (squirrel-cage motors)
- Mechanical Endurance: 10 million operations
- Electrical Endurance (AC-3): 1 million operations
- Mounting: 35 mm DIN rail or screw mounting
- Terminal Type: Screw clamp, 1–16 mm² (main); 0.75–2.5 mm² (auxiliary)
- Degree of Protection: IP20 (open type)
- Operating Temperature: -25 °C to +60 °C
- Weight: ~1.47 kg
- Dimensions (H × W × D): 95 × 45 × 110 mm (approx.)
- Standards: IEC/EN 60947-4-1, UL 508, CSA C22.2
Why Engineers Specify This Model
- Proven TeSys D Platform: Over 30 years of global field deployment with documented MTBF data available from Schneider Electric.
- Compact Footprint: 45 mm wide body allows high-density panel layouts, reducing enclosure size and material cost.
- Tool-Free Auxiliary Contact Addition: Snap-on LA1D / LA1DN auxiliary contact blocks enable rapid field modification without rewiring.
- Integrated Wiring Identification: Color-coded terminals and embossed labeling reduce commissioning errors in multi-contactor panels.
- Wide Coil Voltage Tolerance: Operates reliably between 0.85–1.1 × Uc, accommodating real-world supply fluctuations in industrial environments.
- Global Certifications: CE, UL, CSA, CCC — accepted by inspection authorities across Asia, Europe, and North America.
Complete System Bill of Materials
For a complete DOL motor starter using the LC1D40M7C, engineers typically specify:
- Contactor: LC1D40M7C (this unit)
- Overload Relay: LRD22 (16–24 A) or LRD32 (23–32 A) — direct plug-in, no wiring required
- Auxiliary Contact Block: LA1DN11 (1 NO + 1 NC) for control circuit feedback
- Motor Circuit Breaker: GV2ME22 (20–25 A) for upstream short-circuit protection
- Control Transformer (optional): ABT7ESM016B (160 VA, 400/220 V) for coil supply isolation
- Surge Suppressor (optional): LAD4RCU (RC snubber) to protect PLC outputs from coil back-EMF
Compliance & Industry Standards
- IEC/EN 60947-4-1 — Low-voltage switchgear and controlgear: contactors and motor starters
- UL 508 — Industrial Control Equipment (Listed)
- CSA C22.2 No. 14 — Industrial Control Equipment
- GB/T 14048.4 — Chinese national standard equivalent
- CE Marking — EU Low Voltage Directive 2014/35/EU & EMC Directive 2014/30/EU
- CCC (China Compulsory Certification) — Required for sale and installation in mainland China
- RoHS Compliant — Restriction of Hazardous Substances Directive
Quality Assurance & Sourcing
Konmask.com sources the LC1D40M7C exclusively through verified supply channels with full traceability documentation. Every unit shipped includes:
- Original manufacturer packaging with holographic authenticity label
- Batch/lot traceability records available on request
- Pre-shipment functional inspection (coil energization, contact resistance check)
- Certificate of Conformity (CoC) available for project documentation
- 30-day return policy for unused, unopened units
How to Source This Part
- Single Unit / Small Quantity: Add to cart directly — in-stock units ship within 1–3 business days.
- Project Quantity (10+ units): Contact us for volume pricing and lead time confirmation.
- OEM / MRO Standing Orders: Email support@konmask.com to discuss blanket order arrangements and consignment stocking.
- Urgent / Emergency Procurement: Call +0086 19859288691 for same-day quotation on critical plant breakdowns.
- Datasheet & Wiring Diagram: Available on request — include your project reference when contacting us.
Application-Specific FAQ
Q: Can the LC1D40M7C be used for reversing duty (forward/reverse motor control)?
A: Yes. Use two LC1D40M7C units with a LAD9R1 mechanical interlock kit and LA9D11170 electrical interlock to build a reversing starter. Never energize both contactors simultaneously.
Q: What overload relay is compatible for a 22 kW motor application?
A: For motors above 18.5 kW at 400 V, the LC1D40M7C exceeds its AC-3 rating. Consider upgrading to the LC1D50 or LC1D65 series. For 18.5 kW, pair with LRD32 (23–32 A range).
Q: Is this contactor suitable for capacitor bank switching (AC-6b)?
A: No. Capacitor switching requires AC-6b rated contactors (e.g., LC1DWK12). Using an AC-3 contactor for capacitor switching will cause premature contact welding.
Q: Can I add a 24 V DC coil version instead of 220 V AC?
A: Yes. The equivalent 24 V DC coil version is LC1D40BD. Confirm your control voltage before ordering.
Q: What is the maximum ambient temperature for continuous operation?
A: The LC1D40M7C is rated for continuous operation up to +60 °C ambient. Above 40 °C, apply derating per IEC 60947-4-1 Annex B.
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