Square D QO240PL Miniature Circuit Breaker
- 40A
- 2 Pole
- Plug-On
Square D
QO240PL
Miniature Circuit Breaker
Brand
Square D
SKU
QO240PL
Quantity
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Square D QO240PL - 40A 2 Pole Miniature Circuit Breaker
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Description
Built for automated lighting and control systems, the Square D QO240PL is a 40A remotely operated miniature breaker. It includes an 18-inch control wire lead, allowing facility managers to switch circuits on or off via external control signals. This two-pole unit mounts into Powerlink lighting control panels, standard QO load centers, and NQ panelboards. It combines traditional thermal-magnetic overcurrent protection with the convenience of smart energy management and automated scheduling.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO240PL |
| Series | QO |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 240VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Powerlink Panelboards, NQ Panelboards, QO Load Centers |
| Wire Gauge | 12-2 AWG (Al), 14-2 AWG (Cu) |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | 18-inch Control Wire Lead |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip, RoHS Compliant, Mercury Free |
Product FAQs
7 answersWhat panels are compatible with the Square D QO240PL circuit breaker?
This breaker is designed for use in Square D Powerlink lighting control panelboards, NQ panelboards, and standard QO load centers.
Can I install the QO240PL in a Square D Homeline load center?
No. Square D QO and Homeline breakers have different mounting configurations and are not interchangeable. The QO240PL is strictly for QO series and Powerlink panels.
What wire sizes are accepted by the terminals on the QO240PL?
The box lugs accommodate 14 AWG to 2 AWG copper wire, or 12 AWG to 2 AWG aluminum wire.
Does the QO240PL include a control wire for remote operation?
Yes. As a Powerlink breaker, it includes an 18-inch lead wire designed for remote switching and integration with automated control systems.
What does the PL suffix indicate on the QO240PL catalog number?
The PL designates this as a Powerlink miniature circuit breaker. These breakers are specifically engineered for remote operation in automated lighting and control systems.
Is the QO240PL suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration motor loads.
What type of protection does the QO240PL provide?
It features a fixed thermal-magnetic trip unit that delivers long-time protection against overloads and instantaneous protection against short circuits.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 286 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 6/13/26
Customers say these circuit breakers arrive quickly and work as described. Fast shipping and competitive pricing are frequently mentioned, with many noting same-day or next-day delivery. Users appreciate the wide inventory, particularly for hard-to-find older-style models unavailable locally. The products function reliably and arrive in good condition. Most customers report straightforward ordering and positive interactions. However, some experienced delivery delays or received incorrect items requiring reordering. A few noted concerns about condition upon arrival or customer service responsiveness.
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Rating
286 reviews
- RBRobert B.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/5/26Square D Q0120-20A circuit breaker
This device was delivered on time as advertised and it was in excellent condition. The installation process was simple and straightforward, and the unit worked perfectly when connected to the electric circuit.
I am completely satisfied and will utilize this component resource for my future electrical needs.
- GCGerard C.Verified BuyerReviewingSquare D QO130GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Great !
I could not find the breaker in hardwood stores. Superbreakers took car of it in a week.
- RHRoy H.Verified BuyerReviewingSquare D QO280 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Square D QO280 - 80A 2 Pole Miniature Circuit Breaker
Exactly as described
- KWKevin W.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Great Price
Brand spanking new!
- CEchristopher e.Verified BuyerReviewingSquare D QO115PDF - 15A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26My breakers
Had a hard time locating these breakers locally, when I did find 1 they wanted to charge me triple what superbreakers charged. Items delivered exactly when they said they would, were exactly what I ordered. Appreciated the ease of ordering, definitely my go to from this point on