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Normally Open

Electrodepot 40A 12 Pole (4x3) Normally Open Contactor - 110-120VAC Coil, DIN Rail and Screws - Suitable for HVAC and Lighting Control
Electrodepot 40A 12 Pole (4x3) Normally Open Contactor - 110-120VAC Coil, DIN Rail and Screws - Suitable for HVAC and Lighting Control
$199.95 - $199.95
$199.95
$199.95 - $199.95
$199.95

Electrodepot 40A 12 Pole (4x3) NO Contactor - 110/120VAC Coil, with DIN Rail and Screws for HVAC, AC, Motor and Lighting

In stock
Rated 4.8 out of 5
Based on 57 reviews

Electrodepot 40A 12 Pole (4x3) NO Contactor   We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting contac...

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$199.95 - $199.95
$199.95
$199.95 - $199.95
$199.95
Shopcorp 40A 4 Pole NO IEC 400V Contactor - 110/120VAC Coil for HVAC, AC, Motor, and Lighting
Shopcorp 40A 4 Pole NO IEC 400V Contactor - 110/120VAC Coil for HVAC, AC, Motor, and Lighting
$71.99 - $71.99
$71.99
$71.99 - $71.99
$71.99

Shopcorp 40 Amp 4 Pole Normally Open Contactor - IEC 400V - 110/120VAC Coil for HVAC Systems, AC, Motor Loads & Lighting

In stock
Rated 4.6 out of 5
Based on 50 reviews

Shopcorp 40A 4 Pole NO IEC 400V Contactor We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting contactor...

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$71.99 - $71.99
$71.99
$71.99 - $71.99
$71.99
Electrodepot Contactor - 40 Amp 8 Pole (4 Pole x 2) NO - 110/120VAC Coil, Includes DIN Rail and 2 Screws for HVAC, AC, Motor Load and Lighting
Electrodepot Contactor - 40 Amp 8 Pole (4 Pole x 2) NO - 110/120VAC Coil, Includes DIN Rail and 2 Screws for HVAC, AC, Motor Load and Lighting
$134.95 - $134.95
$134.95
$134.95 - $134.95
$134.95

Electrodepot 40A 8 Pole (4 Pole x 2) NO Contactor - 110/120VAC Coil, with DIN Rail for HVAC, AC, Motor Load and Lighting Systems

In stock
Rated 4.9 out of 5
Based on 43 reviews

Electrodepot 8 Pole 40A (4 pole x 2 units) Normally Open 120V Contactor With DIN Rail   We offer a diverse range of contactors, including HVAC cont...

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$134.95 - $134.95
$134.95
$134.95 - $134.95
$134.95
Electrodepot 40A 4 Pole NO Contactor - 110/120VAC Coil, with 24-7 Electronic Timer, DIN Rail and Screws for HVAC, AC, Motor Load and Lighting
Electrodepot 40A 4 Pole NO Contactor - 110/120VAC Coil, with 24-7 Electronic Timer, DIN Rail and Screws for HVAC, AC, Motor Load and Lighting
$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99

Electrodepot 40A 4 Pole NO Contactor, 110/120VAC Coil, with 24-7 Timer, DIN Rail & Screws for HVAC, Motor Load, Lighting

In stock
Rated 4.6 out of 5
Based on 42 reviews

Electrodepot 40A 4 Pole Normally Open Contactor We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting con...

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$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99
Shopcorp 40A 4 Pole NO Contactor - 110/120VAC Coil, with 24-7 Electronic Timer, DIN Rail and Screws for HVAC, AC, Motor Load and Lighting
Shopcorp 40A 4 Pole NO Contactor - 110/120VAC Coil, with 24-7 Electronic Timer, DIN Rail and Screws for HVAC, AC, Motor Load and Lighting
$87.99 - $87.99
$87.99
$87.99 - $87.99
$87.99

Shopcorp 40A 4 Pole NO Contactor - 110/120VAC Coil w/ 24-7 Electronic Timer, DIN Rail & Screws for HVAC, Motor, Lighting

In stock
Rated 4.8 out of 5
Based on 36 reviews

Shopcorp 40A 4 Pole Normally Open Contactor We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting contact...

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$87.99 - $87.99
$87.99
$87.99 - $87.99
$87.99
Electrodepot 40A 4 Pole Normally Open 400V Contactor - 110/120VAC, Includes DIN Rail for HVAC, AC, Motor Load and Lighting
Electrodepot 40A 4 Pole Normally Open 400V Contactor - 110/120VAC, Includes DIN Rail for HVAC, AC, Motor Load and Lighting
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Electrodepot 40A 4 Pole Normally Open 400V Contactor - 110/120VAC Coil with DIN Rail for HVAC, AC, Motor Load & Lighting

In stock
Rated 4.9 out of 5
Based on 41 reviews

Electrodepot 40A 4 Pole NO IEC 400V Contactor We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting cont...

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$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
Shopcorp 40A 4 Pole NO IEC 400V Contactor - 110/120VAC Coil for HVAC, AC, Motor Load, and Lighting
Shopcorp 40A 4 Pole NO IEC 400V Contactor - 110/120VAC Coil for HVAC, AC, Motor Load, and Lighting
$68.99 - $68.99
$68.99
$68.99 - $68.99
$68.99

Shopcorp 40 Amp 4 Pole Contactor Normally Open IEC 400V - 110/120VAC Coil for HVAC, AC, Motor Load, and Lighting Systems

In stock
Rated 4.5 out of 5
Based on 41 reviews

Shopcorp 40A 4 Pole NO IEC 400V Contactor   We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting contacto...

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$68.99 - $68.99
$68.99
$68.99 - $68.99
$68.99
Shopcorp 40A 1 Pole 24VAC Definite Purpose, Magnetic Contactor for HVAC Heavy Duty 24 VAC Coil, Motor Load 40A, Air Conditioner & Heat Pump
Shopcorp 40A 1 Pole 24VAC Definite Purpose, Magnetic Contactor for HVAC Heavy Duty 24 VAC Coil, Motor Load 40A, Air Conditioner & Heat Pump
Save 10% Save %
$21.99
$21.99 - $21.99
$21.99
$19.75
$19.75 - $19.75
$19.75

Shopcorp 40A 1 Pole 24VAC Coil Definite Purpose Magnetic Contactor, HVAC Heavy Duty 24VAC, Motor Load 40A, AC, Heat Pump

In stock
Rated 4.6 out of 5
Based on 32 reviews

Shopcorp 40A 1 Pole Normally Open 24VAC Magnetic Definite Purpose Contactor  We offer a diverse range of contactors, including HVAC contactors, AC...

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$21.99
$21.99 - $21.99
$21.99
$19.75
$19.75 - $19.75
$19.75
Save 10% Save %
Shopcorp 40A 1 Pole 24VAC Definite Purpose, Magnetic Contactor for HVAC Heavy Duty 24 VAC Coil, Motor Load 40A, Air Conditioner & Heat Pump - 2 pack
Shopcorp 40A 1 Pole 24VAC Definite Purpose, Magnetic Contactor for HVAC Heavy Duty 24 VAC Coil, Motor Load 40A, Air Conditioner & Heat Pump - 2 pack
$33.99 - $33.99
$33.99
$33.99 - $33.99
$33.99

Shopcorp 40 Amp 1 Pole 24 VAC Coil Definite Purpose Contactor - HVAC Heavy Duty, Motor Load 40A, AC & Heat Pump | 2 pack

In stock
Rated 4.6 out of 5
Based on 47 reviews

Shopcorp 40A 1 Pole Normally 24VAC Magnetic Definite Purpose Contactor - 2 Pack We offer a diverse range of contactors, including HVAC contactors,...

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$33.99 - $33.99
$33.99
$33.99 - $33.99
$33.99
Shopcorp 40A 2 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - 2 pack
Shopcorp 40A 2 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - 2 pack
$41.99 - $41.99
$41.99
$41.99 - $41.99
$41.99

Shopcorp 40Amp 2 Pole 600V Definite Purpose Normally Open Contactor - 110/120VAC Coil for HVAC, AC and Lighting | 2 pack

In stock
Rated 4.5 out of 5
Based on 35 reviews

Shopcorp 40A 2 Pole Normally Open 600V Definite Purpose Contactor - 2 pack We offer a diverse range of contactors, including HVAC contactors, AC c...

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$41.99 - $41.99
$41.99
$41.99 - $41.99
$41.99
Shopcorp 40A 3 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified - 2 pack
Shopcorp 40A 3 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified - 2 pack
$45.99 - $45.99
$45.99
$84.99
$84.99 - $84.99
$84.99

Shopcorp 40Amp 3 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified | 2 pack

In stock
Rated 4.5 out of 5
Based on 47 reviews

Shopcorp 40A 3 Pole Normally Open 600V Definite Purpose Contactor - UL certified - 2 pack We offer a diverse range of contactors, including HVAC c...

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$45.99 - $45.99
$45.99
$84.99
$84.99 - $84.99
$84.99
Shopcorp 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified - 2 pack
Shopcorp 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified - 2 pack
$45.99 - $45.99
$45.99
$95.98
$95.98 - $95.98
$95.98

Shopcorp 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC, AC & Lighting - UL Certified | 2 pack

In stock
Rated 4.6 out of 5
Based on 44 reviews

Shopcorp 40A 4 Pole Normally Open 600V Definite Purpose Contactor - UL certified - 2 pack We offer a diverse range of contactors, including HVAC c...

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$45.99 - $45.99
$45.99
$95.98
$95.98 - $95.98
$95.98
Shopcorp 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50A Contactor for HVAC and Lighting - 2 pack
Shopcorp 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50A Contactor for HVAC and Lighting - 2 pack
$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99

Shopcorp 40 Amp 2 Pole Contactor 24VAC - Definite Purpose 600V, Inductive 40A, Resistive 50A for HVAC & Lighting | 2 pack

In stock
Rated 4.5 out of 5
Based on 35 reviews

Shopcorp 40A 2 Pole Definite Purpose Contactor - 2 pack We offer a diverse range of contactors, including HVAC contactors, AC contactors, and ligh...

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$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
Migro 40A 3 Pole Definite Purpose Contactor - 110/120VAC Coil - UL Certified
Migro 40A 3 Pole Definite Purpose Contactor - 110/120VAC Coil - UL Certified
$45.99 - $45.99
$45.99
$45.99 - $45.99
$45.99

Migro 40 Amp 3 Pole, NEMA 600V Contactor - 110/120VAC Coil for HVAC, Air Conditioning & Lighting Systems - UL Certified

In stock
Rated 4.9 out of 5
Based on 57 reviews

Migro 40A 3 Pole DP Contactor - UL certified   We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting conta...

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$45.99 - $45.99
$45.99
$45.99 - $45.99
$45.99
Shopcorp 40A 3 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified
Shopcorp 40A 3 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified
$45.99 - $45.99
$45.99
$45.99
$45.99 - $45.99
$45.99

Shopcorp 40A 3 Pole 600V Definite Purpose - Normally Open Contactor - 110/120VAC Coil for HVAC & Lighting - UL Certified

In stock
Rated 4.8 out of 5
Based on 40 reviews

Shopcorp 40A 3 Pole Normally Open 600V Definite Purpose Contactor - UL certified  We offer a diverse range of contactors, including HVAC contactor...

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$45.99 - $45.99
$45.99
$45.99
$45.99 - $45.99
$45.99
Shopcorp 40A 2 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting
Shopcorp 40A 2 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting
$21.99 - $21.99
$21.99
$22.99
$22.99 - $22.99
$22.99

Shopcorp 40 Amp 2 Pole 600V Definite Purpose Normally Open Contactor - 110/120VAC Coil for HVAC & Lighting - UL Certified

In stock
Rated 4.8 out of 5
Based on 44 reviews

Shopcorp 40A 2 Pole Normally Open 600V Definite Purpose Contactor  We offer a diverse range of contactors, including HVAC contactors, AC contactor...

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$21.99 - $21.99
$21.99
$22.99
$22.99 - $22.99
$22.99
Shopcorp 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified
Shopcorp 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified
$45.99 - $45.99
$45.99
$50.75
$50.75 - $50.75
$50.75

Shopcorp 40A 4 Pole 600V Definite Purpose Contactor Normally Open - 110/120VAC Coil for HVAC and Lighting - UL Certified

In stock
Rated 4.7 out of 5
Based on 52 reviews

Shopcorp 40A 4 Pole Normally Open 600V Definite Purpose Contactor - UL certified  We offer a diverse range of contactors, including HVAC contactor...

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$45.99 - $45.99
$45.99
$50.75
$50.75 - $50.75
$50.75
Migro 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50 A Contactor for HVAC and Lighting with NEMA standards
$21.99 - $21.99
$21.99
$21.99 - $21.99
$21.99

Migro 40 Amp 2 Pole 600V Contactor - 24V, Inductive 40 Amp / Resistive 50 Amp for HVAC and Lighting with NEMA standards

In stock
Rated 4.8 out of 5
Based on 46 reviews

Migro 40A 2 Pole Definite Purpose Contactor with NEMA standards We offer a diverse range of contactors, including HVAC contactors, AC contactors, ...

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$21.99 - $21.99
$21.99
$21.99 - $21.99
$21.99
5y6 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified - 2 pack
5y6 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified - 2 pack
$99.75 - $99.75
$99.75
$99.75 - $99.75
$99.75

5y6 40 Amp 4 Pole 600 V N.O. Definite Purpose Contactor - 110/120VAC Coil for HVAC, Air Conditioner, Lighting - UL Certified | 2 pack

In stock
Rated 4.6 out of 5
Based on 31 reviews

5y6 40A 4 Pole Normally Open 600V Definite Purpose Contactor  - UL certified - 2 pack We offer a diverse range of contactors, including HVAC con...

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$99.75 - $99.75
$99.75
$99.75 - $99.75
$99.75
Migro 40A 4 Pole 600V Definite Purpose, NO Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified
$50.75 - $50.75
$50.75
$50.75 - $50.75
$50.75

Migro 40Amp 4 Pole 600V Definite Purpose, Normally Open Contactor - 110/120VAC Coil for HVAC and Lighting - UL Certified

In stock
Rated 4.7 out of 5
Based on 40 reviews

Migro 40A 4 Pole Normally Open 600V Definite Purpose Contactor  - UL certified  We offer a diverse range of contactors, including HVAC contactor...

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$50.75 - $50.75
$50.75
$50.75 - $50.75
$50.75
Shopcorp 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50A Contactor for HVAC and Lighting
Shopcorp 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50A Contactor for HVAC and Lighting
$22.45 - $22.45
$22.45
$22.45 - $22.45
$22.45

Shopcorp 40A 2 Pole Definite Purpose Contactor 600V - 24VAC Coil, Inductive 40A / Resistive 50A for HVAC, AC & Lighting Systems

In stock
Rated 4.5 out of 5
Based on 34 reviews

Shopcorp 40A 2 Pole Definite Purpose Contactor We offer a diverse range of contactors, including HVAC contactors, AC contactors, and lighting cont...

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$22.45 - $22.45
$22.45
$22.45 - $22.45
$22.45
Migro 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50 A Contactor for HVAC and Lighting with NEMA standards - 2 pack
Migro 40A 2 Pole 600V, 24V, Inductive 40A / Resistive 50 A Contactor for HVAC and Lighting with NEMA standards - 2 pack
$42.99 - $42.99
$42.99
$42.99 - $42.99
$42.99

Migro 40A 2 Pole 600V - 24V, Inductive 40A / Resistive 50 A Contactor for HVAC and Lighting with NEMA standards | 2 pack

In stock
Rated 4.5 out of 5
Based on 19 reviews

Migro 40A 2 Pole Definite Purpose Contactor with NEMA standards (2 pack) We offer a diverse range of contactors, including HVAC contactors, AC con...

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$42.99 - $42.99
$42.99
$42.99 - $42.99
$42.99
Shopcorp 40 Amp 2 Pole Definite Purpose Contactor | 50A RES, 240V Coil, UL Listed for HVAC, Lighting & Motor Load Applications
$22.99 - $22.99
$22.99
$22.99 - $22.99
$22.99

Shopcorp 40 Amp 2 Pole Definite Purpose Contactor | 50A RES, 240V Coil, UL Listed for HVAC, Lighting & Motor Load Applications

In stock
Rated 4.6 out of 5
Based on 7 reviews

Reliable 40A 2 Pole Contactor for HVAC, Lighting & Refrigeration The Shopcorp 40A 2 Pole Definite Purpose Contactor is engineered for HVAC sys...

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$22.99 - $22.99
$22.99
$22.99 - $22.99
$22.99
Shopcorp 40A 3 Pole Definite Purpose Contactor – 240V Coil, UL Listed for HVAC & Refrigeration
Shopcorp 40A 3 Pole Definite Purpose Contactor – 240V Coil, UL Listed for HVAC & Refrigeration
$45.99 - $45.99
$45.99
$45.99
$45.99 - $45.99
$45.99

Shopcorp 40A 3 Pole 600V Definite Purpose - Normally Open Contactor - 208/240VAC Coil for HVAC & Lighting - UL Certified

In stock
Rated 4.4 out of 5
Based on 9 reviews

Shopcorp 40A 3 Pole Definite Purpose Contactor – 240V Coil, UL Listed for HVAC & Refrigeration Shopcorp 40A 3 Pole AC Contactor – 208/240V UL L...

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$45.99 - $45.99
$45.99
$45.99
$45.99 - $45.99
$45.99

 

Discover our Normally Open Collection, offering essential contactor solutions for various applications. Whether you need HVAC contactors, air conditioner contactors, or motor contactors, our high-quality selection has you covered.

Find reliable and efficient electrical contactors tailored to your specific needs. Explore our collection today for the right electrical solution.

FAQ

What are the advantages of NO contactors?

Normally Open contactors are widely used because they only carry current when activated, which makes them energy-efficient and safer for variable loads. They are ideal for HVAC compressors, pumps, and lighting systems where switching is required.

What does NO and NC mean in contactors?

In contactors, NO (Normally Open) means the circuit is open until the coil is energized, allowing current to flow only when activated. NC (Normally Closed) means the circuit stays closed by default and opens when the coil is energized. These functions are essential for controlling different types of electrical loads.

Where are NO, NC, and 2NO/2NC contactors used?
  • Normally Open contactors are commonly used for variable loads such as motors, HVAC systems, and lighting.

  • Normally Closed contactors are used for fixed or safety-critical loads, ensuring continuity until intentionally deactivated.

  • 2NO/2NC contactors combine both options in one device, making them ideal for automation systems and complex industrial applications.


At Contactor Depot, we carry all these configurations (NO, NC, and 2NO/2NC contactors) in multiple pole and voltage options to match your application.

What is the difference between NO, NC, and 2NO/2NC contactors?

The difference lies in how the contacts behave:

  • NO contactors start open and close when energized.
  • NC contactors start closed and open when energized.
  • 2NO/2NC contactors provide a mix of both, offering greater flexibility for dual operations in HVAC, motor control, and automation.

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