Heavy-Duty Motor Control Solution – Schneider Electric LC1D475M7C | TeSys D Series
Where This Product Is Used
The Schneider Electric LC1D475M7C is a high-capacity 3-pole AC contactor engineered for demanding industrial motor control applications. Engineers and system integrators specify this model across a wide range of sectors:
- Water & Wastewater Treatment: Controlling large pump motors (250–400 kW) in municipal water stations and sewage lift stations where reliable switching under full load is critical.
- Oil & Gas Facilities: Motor control centers (MCCs) for compressor drives, pipeline pumps, and wellhead equipment requiring IEC-rated contactors with proven arc-quenching performance.
- Mining & Quarrying: Conveyor belt drives, crusher motors, and ventilation fan starters operating in dusty, high-vibration environments.
- Steel & Metallurgy Plants: Rolling mill auxiliary drives, furnace blower motors, and ladle crane hoists demanding continuous-duty switching.
- Marine & Offshore: Thruster motor control panels and ballast pump starters where compact footprint and robust construction are mandatory.
- Commercial HVAC: Large chiller compressor starters and cooling tower fan banks in district energy systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | LC1D475M7C |
| Series | TeSys D |
| Manufacturer | Schneider Electric |
| Poles | 3P (3NO) |
| Rated Operational Current (AC-3) | 475 A |
| Motor Power @ 400V AC | 250 kW |
| Motor Power @ 690V AC | 400 kW |
| Coil Voltage | 220 VAC / 50–60 Hz (M7 coil) |
| Auxiliary Contacts | 1NO + 1NC (integrated) |
| Utilization Category | AC-3 / AC-4 |
| Rated Insulation Voltage (Ui) | 1000 V |
| Rated Impulse Withstand Voltage (Uimp) | 8 kV |
| Mechanical Endurance | 10 million operations |
| Electrical Endurance (AC-3) | 1 million operations |
| Mounting | DIN rail / screw mounting |
| Degree of Protection | IP20 (open type) |
| Operating Temperature | -25°C to +60°C |
| Weight | 1.32 kg |
| Standards | IEC 60947-4-1, EN 60947-4-1 |
Why Engineers Specify This Model
- High Thermal Capacity: 475 A AC-3 rating handles locked-rotor inrush without nuisance tripping, reducing downtime in continuous-process industries.
- Proven Arc Management: TeSys D arc chutes deliver consistent contact life even under frequent start-stop cycling (AC-4 duty).
- Universal Coil Compatibility: M7 coil (220 VAC) is the most common control voltage in Asian and European industrial panels, simplifying integration.
- Modular Accessory Ecosystem: Compatible with TeSys D auxiliary contact blocks, surge suppressors, mechanical interlocks, and overload relays — no custom wiring adapters needed.
- Compact Frame for Its Rating: Smaller footprint than legacy frame-size equivalents, enabling denser MCC panel layouts.
- Global Certifications: CE, UL, CSA, CCC — accepted by inspectors and EPCs worldwide without re-testing.
Complete System Bill of Materials
For a fully protected motor starter using the LC1D475M7C, engineers typically specify:
- Contactor: LC1D475M7C (this unit)
- Thermal Overload Relay: LRD3365 (200–330 A range) or LRD3369 (310–400 A range)
- Auxiliary Contact Block: LADN11 (1NO+1NC) for remote status feedback
- Surge Suppressor: LAD4RCU (RC type, 110–250 VAC coil) to protect PLC outputs
- Mechanical Interlock: LAD9R1 for reversing starter configurations
- Circuit Breaker (upstream): Schneider NSX630 or equivalent, coordinated for Type 2 protection
Compliance & Industry Standards
- IEC 60947-4-1: Low-voltage switchgear — electromechanical contactors and motor starters
- EN 60947-4-1: European harmonized standard (CE marking)
- UL 508: Industrial control equipment (North America)
- CSA C22.2 No. 14: Industrial control equipment (Canada)
- GB 14048.4: Chinese national standard (CCC certified)
- RoHS 2011/65/EU: Restriction of hazardous substances compliant
Quality Assurance & Sourcing
Konmask.com sources the LC1D475M7C exclusively through authorized Schneider Electric distribution channels and verified industrial surplus networks. Every unit undergoes:
- Visual inspection for contact wear, coil integrity, and housing damage
- Coil resistance verification against factory specification
- Auxiliary contact continuity test
- Traceability check: date code, factory mark, and label authenticity
Counterfeit risk is a real concern in the high-current contactor market. We provide documentation upon request including factory test reports and certificate of conformity.
How to Source This Part
- In-Stock Orders: Add to cart and check out — ships within 1–3 business days from our Fujian warehouse.
- Bulk / Project Quantities: Contact us for volume pricing and lead-time commitment on MCC panel builds.
- Urgent Requirements: WhatsApp or call +0086 19859288691 for same-day quotation on emergency plant shutdowns.
- OEM / EPC Procurement: Email [email protected] with your BOM for consolidated sourcing across Schneider, ABB, Siemens, and Omron lines.
Application-Specific FAQ
Q: Can the LC1D475M7C be used for star-delta starting?
A: Yes. Use three LC1D475M7C units (main, star, delta) with LAD9R1 mechanical interlocks and a timer relay. This is the standard IEC star-delta configuration for motors above 200 kW.
Q: What overload relay pairs with this contactor?
A: The LRD3365 (200–330 A) and LRD3369 (310–400 A) are the factory-matched TeSys D overload relays. For motors above 400 A, use a separate CT-based electronic relay such as the Schneider LT6.
Q: Is the M7 coil suitable for 50 Hz and 60 Hz systems?
A: Yes. The M7 coil is rated 220 VAC at both 50 Hz and 60 Hz, making it suitable for installations in China, Europe, Southeast Asia, and Latin America.
Q: Can I add auxiliary contacts to this contactor?
A: Yes. The TeSys D platform supports front-mounted auxiliary contact blocks (LADN series) and side-mounted blocks, allowing up to 4 auxiliary contacts total without increasing panel depth.
Q: What is the difference between LC1D475M7C and LC1D475Q7C?
A: The coil voltage differs: M7 = 220 VAC, Q7 = 380 VAC. All other electrical and mechanical specifications are identical. Choose based on your control circuit voltage.
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