- Factory Stock in Ontario
Definite Purpose Contactor · 2-Pole 40A · 24V AC Coil, Lug Terminals, 2NO · Noark Electrical EX9CKT40B20B7
40A definite purpose contactor with 2-pole 2NO power contacts, 24V AC 50/60 Hz coil, and box lug terminals for HVAC, compressors, pumps, electric heating, and other specialised switching loads. Commonly used where a low-voltage control circuit switches a higher-current load; actual suitability depends on load type, inrush, enclosure, and local electrical code.
What this product is for
The Noark EX9CKT40B20B7 is a definite purpose contactor for switching specialised inductive and resistive loads in HVAC and control applications. It is a 2-pole, 40A device with two normally open (2NO) power contacts, a 24V AC 50/60 Hz coil, and box lug terminals.
Use for
Use it for compressors, pumps, transformers, electric heating, lighting loads, refrigeration equipment, and other control panels that require a 24V AC coil and 2-pole switching. It is commonly selected in residential and light commercial HVAC equipment where low-voltage thermostat or control wiring operates the contactor coil.
Avoid for
Avoid using this contactor where the application requires normally closed contacts, a DC coil, a different coil voltage, or a higher current or horsepower rating than the equipment demands. Do not assume interchangeability with general-purpose IEC contactors without confirming terminal style, coil voltage, contact arrangement, and equipment approval requirements.
Best for
Best for OEM replacement, service work, and new panel builds needing a compact 40A definite purpose contactor with lug terminations. It suits electricians and HVAC technicians who need a 24V coil contactor for common compressor and heating control duties.
Installed in
Typically installed in condensing units, air handlers, rooftop units, refrigeration equipment, pump panels, and electric heating control assemblies. Final installation must follow the equipment design, conductor sizing, overcurrent protection, and applicable Canadian code requirements.
Why this product exists
This product provides a straightforward way to switch higher-current HVAC and similar loads from a lower-voltage 24V AC control circuit. Lug terminals support secure field wiring, and the definite purpose format is intended for well-defined equipment duties rather than broad general-purpose motor control selection.
Compared with similar products
Compared with screw-terminal versions, this model uses box lug terminals for field wiring. Compared with higher-frame definite purpose contactors, the EX9CKT series covers 20A to 40A applications and is commonly chosen when 2-pole switching and a 24V AC coil are required. As typical buying guidance, 24V coil contactors are often preferred in HVAC control circuits because they match common thermostat and control transformer outputs; actual control voltage must always be confirmed on the equipment.
Specifications
- Manufacturer: Noark Electrical
- Manufacturer part number: EX9CKT40B20B7
- Product family: EX9CKT Series
- Product type: Definite purpose contactor
- Poles: 2-pole
- Contacts: 2NO
- Rated current: 40A full-load amperage
- Resistive rating: 50A at up to 600 Vac
- Coil voltage: 24V AC, 50/60 Hz
- Terminal style: Box lug terminals
- AC voltage: Up to 600V
- Mechanical life: 1,000,000 cycles
- Electrical life: 250,000 cycles on AC resistance air heating load
- Typical conductor range for 40A 1- and 2-pole lug terminals: #10 to #8 AWG copper (approximately 6 to 10 mm²), subject to terminal and installation requirements
- Typical application note: often used on 24V control circuits switching compressors, pumps, and electric heat loads; actual performance depends on load characteristics, inrush, insulation, layout, and local electrical code.
- Coil Voltage Range24V
- Number Of Poles2 Pole
- Contactor TypeDefinite Purpose
- Amp Rating40A
- BrandNoark Electrical
- Warranty5 year
Minimum Order $20
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Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998(Updated August 2026)
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.
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