Quad Plug-In Circuit Breaker · 15A/1P + 40A/2P + 15A/1P · Q-Line Thermal-Magnetic · ABB THQLQ154015
ABB THQLQ154015 is a Q-Line quad plug-in thermal-magnetic breaker with two 15A single-pole circuits and one 40A double-pole circuit in a 2 in (51 mm) breaker space. It is designed for compatible ABB/GE single-phase PowerMark and ReliaHome load centres where panel space is limited.
What this product is for
The THQLQ154015 is a quad plug-in circuit breaker used to add three circuits in one compact assembly: two 15A single-pole circuits and one 40A double-pole circuit. It is intended for overload and short-circuit protection in compatible single-phase 120/240V or 120/208V ABB and legacy GE by ABB load centres.
Use for
- Residential load centres where breaker space is limited.
- Adding a 40A 2-pole load while keeping two 15A branch circuits in the same 2 in (51 mm) space.
- Panel upgrades, renovations, and service work in compatible Q-Line / PowerMark style installations.
Typical branch-circuit guidance: 15A circuits are commonly paired with #14 AWG copper, while larger 40A loads must follow the panel label, conductor type, temperature rating, and applicable Canadian Electrical Code requirements.
Avoid for
- Panels not specifically listed for ABB/GE Q-Line quad breakers.
- Applications requiring GFCI, AFCI, or specialty protection functions not provided by this standard thermal-magnetic breaker.
- Installations where available fault current exceeds the breaker rating.
Best for
Best for electricians and service contractors trying to free up panel capacity without replacing the load centre. This style is commonly used when adding new branch circuits in older or space-constrained residential panels.
Installed in
Installed in compatible ABB ReliaHome and legacy single-phase PowerMark load centres, including applications that accept tandem and quad breakers in the required positions. Always confirm the panel directory and wiring label before ordering or installing.
Why this product exists
Quad breakers exist to increase circuit count in the same footprint as a standard 2 in (51 mm) breaker space. This helps avoid unnecessary panel replacement when the load centre is approved for tandem/quad use and additional branch circuits are needed.
Compared with similar products
Compared with a standard 2-pole breaker, this quad format adds two extra 15A single-pole circuits in the same overall space. Compared with tandem-only options, it also provides a common-trip 40A 2-pole section for 240V loads. Selection should be based on panel compatibility first, then circuit layout and ampacity requirements.
Rule of thumb: use quad breakers only where the panel manufacturer permits them. Actual suitability depends on the load centre model, stab arrangement, available fault current, conductor sizing, and local code.
Specifications
- Manufacturer part number: THQLQ154015
- Brand: ABB
- Product family: Q-Line / THQLQ quad breaker
- Breaker type: Quad plug-in, thermal-magnetic
- Circuit arrangement: 15A/1P + 40A/2P + 15A/1P
- Poles: 4 handle positions / quad configuration
- System voltage: 120/240 VAC and 120/208 VAC, single-phase
- Space used: 2 in (51 mm)
- Interrupt rating: up to 10 kA available fault current
- Conductor rating: 60C/75C
- Ratings: HACR and SWD
- Standards: UL and cUL 489
- Compatibility: ABB ReliaHome and legacy GE by ABB / PowerMark single-phase load centres, subject to panel listing
- Typical wire range from published THQLT/THQLQ data: 15A to 30A positions 14-8 AWG Cu / 12-8 AWG Al; 40A position 8-4 AWG Cu / 8-4 AWG Al
- BrandABB Electrical Distribution
- Warranty5 year
- Electrical
- Poles1 Pole
- Amps15A-240A-15A
- Voltage120/240 Volt
- Interrupt Rating (AIC)10
- Physical
- MountingPush on
- Width2"
- Breaker TypeStandard
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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