3 Pole AC Switching Contactor 40 Amp 2no 2nc For Heavy Duty Industrial
Product Details
3 Pole AC Switching Contactor
,2no 2nc Switching Contactor
The NC1-4011 is a high-performance 3-pole AC contactor designed for heavy-duty industrial and commercial applications. Rated at 40 Amps (AC-3, 380/400V), this unit is engineered for the frequent starting and stopping of electric motors, as well as managing resistive loads in heating and lighting systems.
The "4011" designation highlights its robust capacity and the inclusion of one Normally Open (NO) and one Normally Closed (NC) auxiliary contact as standard. This configuration allows for complex electrical interlocking and remote status signaling without the need for additional add-on blocks. With support for a wide array of coil voltages—from AC 24V to 600V—it is a truly global solution for power distribution panels.
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Heavy-Duty Silver Alloy Contacts: Built with oversized silver-cadmium oxide contacts to ensure high conductivity and superior resistance to arc-pitting. This provides a long electrical lifespan even under rigorous AC-3 motor starting conditions.
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Integrated 1NO+1NC Auxiliary Contacts: Unlike smaller models that offer only one auxiliary, the NC1-4011 includes both NO and NC contacts (11 configuration). This is critical for safety interlocks in forward/reversing starters and star-delta configurations.
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Global Coil Voltage Compatibility: Available with precision-wound coils for AC 24V, 110V, 220V, 380V, 440V, and 600V, operating reliably at both 50Hz and 60Hz.
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Effective Arc Extinguishing: Features an advanced arc-chute design that quickly dissipates heat and extinguishes arcs, protecting the internal housing and increasing the safety of the entire control panel.
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Flexible Mounting & Connection: Support for both standard 35mm/75mm DIN rail mounting and direct screw mounting. Reinforced terminal clamps ensure a secure, vibration-proof connection for high-gauge copper wiring.
| Feature | Detailed Specification |
| Model Number | NC1-4011 (3P) |
| Rated Current (Ie) AC-3 | 40A (at 380V/400V) |
| Rated Current (Ie) AC-1 | 60A (Resistive Loads / Heating) |
| Controlled Power (Pe) | 18.5kW / 25HP (at 400V AC) |
| Main Poles | 3-Pole (3P) |
| Auxiliary Contacts | 1NO + 1NC (Built-in) |
| Coil Voltage (Us) | AC 24V, 110V, 220V, 380V, 480V, 600V |
| Standard Compliance | IEC/EN 60947-4-1, CE, RoHS |
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Industrial Motor Control: Ideal for 18.5kW motors used in heavy conveyors, industrial mixers, and large-scale water pumps.
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HVAC & Large Compressors: Managing the high-demand startup currents of industrial chillers and centralized air conditioning units.
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Automatic Transfer Switches (ATS): Serving as a primary switching component in backup power systems due to its high AC-1 rating.
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Lighting & Heating Arrays: Controlling large banks of resistive heaters or high-intensity discharge (HID) stadium lighting.
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Seamless Brand Interchangeability: Our NC1-4011 is a perfect drop-in replacement for CHINT originals and other major brands with the same footprint, ensuring no downtime during maintenance.
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Silent & Stable Operation: Precision-machined E-shaped electromagnetic cores reduce vibration and humming, making the unit suitable for quiet building environments.
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Full-Range Protection Support: Designed to be easily coupled with NR2 Thermal Overload Relays for comprehensive motor protection against phase failure and overloads.
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Industrial Durability: Housed in high-strength, flame-retardant plastic that withstands the high-temperature conditions typically found in sealed industrial cabinets.
Q: Can I use the NC1-4011 for a 600V application?
A: Yes. When equipped with the 600V AC coil, the NC1-4011 is fully rated for high-voltage industrial control circuits, provided the main poles stay within their rated insulation voltage (690V).
Q: What is the difference between AC-3 and AC-1 ratings?
A: AC-3 refers to inductive motor loads (40A), where the motor draws high current on startup. AC-1 refers to non-inductive or slightly inductive loads like heaters (60A).
Q: Are the auxiliary contacts enough for a Reversing Starter?
A: Yes. The 1NO+1NC configuration is generally sufficient for the basic electrical interlocking required for a reversing motor setup.
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Product name
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NC1 contactor
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Place of origin
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Zhejiang,China
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Q1: Are you trading company or manufacturer ?
A1: We are manufacturer.
Q2: Do you have your own R&D team?
A2: Yes, we can customize products as your requirements.
Q3: How about the quality?
A3: We have the best professional engineer and strict QA and QC system.
Q4: Can we be your distributor?
A4: We are looking for distributor and agent all over the world.
Q5: How’s the package?
A5: Normally are wooden case, but also we can pack it according to your requirements.
Q6: How’s the delivery time?
A6: It depends on the quantity you need.
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