Schneider LC1D300M7C 300A AC Contactor for Motor Control – TeSys D Series
When a high-current AC contactor fails mid-operation on a production line, the consequences are immediate and costly: motors stall, conveyor systems halt, compressors shut down, and entire manufacturing cells go dark. Unplanned downtime in heavy industrial environments can cost thousands of dollars per hour. The Schneider Electric LC1D300M7C is engineered precisely to prevent this scenario — a robust, IEC-rated 300A three-pole AC contactor built for continuous duty in the most demanding motor control applications.
Within the TeSys D family — Schneider Electric’s globally dominant contactor platform — the LC1D300M7C occupies the heavy-duty tier, rated at 300A AC-1 and 132kW at 400V AC-3. It is one of the most widely deployed contactors in industrial automation worldwide, trusted by OEMs, panel builders, and MRO engineers across more than 100 countries. Its combination of proven reliability, broad coil voltage availability, and seamless integration with TeSys auxiliary contacts and overload relays makes it the benchmark for large motor switching applications.
Technical Specifications
- Model / SKU: LC1D300M7C
- Brand: Schneider Electric
- Series: TeSys D
- Rated Current (AC-1): 300A
- Motor Power (AC-3, 400V): 132 kW
- Poles: 3-pole (main) + 1 NO auxiliary
- Coil Voltage: 220V AC, 50/60 Hz (M7 suffix)
- Coil Reference: M7C = 220V AC coil
- Utilization Category: AC-1, AC-3, AC-4
- Standards: IEC 60947-4-1, CE, UL, CSA
- Mounting: DIN rail or panel mount
- Weight: 1.32 kg
- Operating Temperature: -5°C to +60°C
- Degree of Protection: IP20 (open type)
Key Features & Benefits
- High Current Capacity: 300A AC-1 rating handles large motors, compressors, and HVAC systems without derating.
- Proven TeSys D Platform: Part of the world’s most installed contactor family, ensuring long-term parts availability and engineering familiarity.
- Integrated Auxiliary Contact: 1 NO auxiliary contact included for control circuit feedback and interlocking.
- Wide Coil Voltage Range: Available in multiple coil voltages across the LC1D300 range; M7C suffix confirms 220V AC coil.
- IEC & UL Dual Certification: Accepted in both European and North American panel designs.
- Modular Accessory System: Compatible with TeSys D auxiliary contact blocks, surge suppressors, and mechanical interlocks.
- Long Electrical Life: Designed for millions of operating cycles under rated load conditions.
- Compact Footprint: Optimized for space-constrained control panels and MCC (Motor Control Center) compartments.
Industry & Equipment Applications
- Oil & Gas: Pump stations, compressor drives, wellhead control panels
- Water & Wastewater: High-power submersible pump control, blower motor switching
- Mining & Minerals: Conveyor belt drives, crusher motor starters, ventilation fans
- HVAC & Building Automation: Chiller compressors, air handling units, cooling tower fans
- Marine & Offshore: Deck machinery, thruster control, power distribution panels
- Steel & Metals: Rolling mill drives, furnace blower control, crane hoist systems
- Food & Beverage: Large mixer drives, refrigeration compressors, conveyor systems
- Power Generation: Generator auxiliaries, transformer cooling fans, switchgear panels
System Integration & Compatible Parts
The LC1D300M7C is designed for seamless integration within the TeSys D ecosystem and broader Schneider Electric automation architecture:
- Overload Relays: LRD / LR9 series thermal and electronic overload relays
- Auxiliary Contact Blocks: LADN, LAEN series (side-mount and top-mount)
- Surge Suppressors: LAD4RCU, LAD4RC series for coil protection
- Mechanical Interlocks: LAD9R series for reversing starter configurations
- Soft Starters: Altistart 48 / ATS48 series for reduced-voltage starting
- Variable Speed Drives: Altivar ATV series for upstream bypass contactor duty
- PLC Integration: Compatible with Modicon M340, M580, and Momentum I/O for automated motor control sequences
Our Quality Assurance Process
At Konmask.com, every Schneider Electric LC1D300M7C unit we supply undergoes a rigorous verification process before shipment:
- ✅ Authenticity Verification: Serial number and date code cross-checked against Schneider Electric’s authorized supply chain records
- ✅ Physical Inspection: Housing integrity, terminal condition, coil markings, and label accuracy inspected by trained technicians
- ✅ Functional Check: Coil energization and contact continuity tested where applicable
- ✅ Secure Packaging: Anti-static and shock-resistant packaging for international freight
- ✅ Documentation: Original manufacturer documentation and test certificates available on request
How to Order
- Submit your inquiry via the Contact / RFQ form on this page
- Provide your required quantity, delivery timeline, and destination country
- Our technical team will confirm availability, lead time, and provide a formal quotation within 24 hours
- Upon PO confirmation, we arrange export documentation, freight, and customs clearance support
- Track your shipment with our dedicated logistics coordination team
📧 Email: support@konmask.com | 📞 WhatsApp/Tel: +0086 19859288691
Why Choose Konmask.com?
- 🌐 Global B2B Supplier — Serving industrial buyers in 50+ countries with reliable cross-border logistics
- 🔧 Technical Expertise — Our team includes qualified automation engineers who can advise on compatibility and alternatives
- 📦 Stock & Sourcing — Combination of in-stock inventory and rapid sourcing for hard-to-find part numbers
- 📋 Full Documentation — CE declarations, test reports, and customs documents provided
- ⚡ Fast Response — RFQ responses within 24 hours; urgent orders prioritized
- 🔒 Secure Transactions — T/T, L/C, and other B2B payment terms accepted
Frequently Asked Questions
Q: What does the “M7C” suffix mean in LC1D300M7C?
A: The “M7” designates the coil voltage — 220V AC at 50/60 Hz. The “C” indicates the standard TeSys D frame version. Always verify the coil voltage matches your control circuit before ordering.
Q: Is the LC1D300M7C suitable for AC-3 (squirrel cage motor) duty?
A: Yes. The LC1D300M7C is rated for AC-3 utilization category, making it ideal for direct-on-line starting and stopping of squirrel cage induction motors up to 132kW at 400V.
Q: Can I add auxiliary contacts to the LC1D300M7C?
A: Yes. The TeSys D platform supports side-mount auxiliary contact blocks (LADN series) and top-mount blocks (LAEN series), allowing up to 4 additional contacts depending on configuration.
Q: What is the difference between LC1D300M7C and LC1D300M7?
A: These are typically the same product; the trailing “C” may denote a regional catalog suffix or packaging variant. Contact our team to confirm the exact specification for your application.
Q: Do you provide export documentation for customs clearance?
A: Yes. We provide commercial invoices, packing lists, certificates of origin, and can arrange third-party inspection reports upon request.
Q: What is the minimum order quantity (MOQ)?
A: We supply from single units to bulk orders. There is no strict MOQ — contact us with your requirement and we will provide the best pricing tier.
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Contact: support@konmask.com | +0086 19859288691
