Quad Plug-In Circuit Breaker · 20A 1P + 30A 2P + 15A 1P · Q-Line Space-Saving Design · ABB THQLQ203015
Quad plug-in thermal-magnetic breaker for ABB/GE Q-Line and PowerMark load centres, combining one 20A single-pole, one 30A double-pole, and one 15A single-pole circuit in a space-saving format. Rated 120/240 VAC with 10 kA interrupting capacity, it is commonly used to add circuits where panel space is limited; verify panel compatibility and circuit position before ordering.
What this product is for
This quad plug-in circuit breaker provides overload and short-circuit protection for three branch circuits in one compact Q-Line format: one 20A single-pole circuit, one 30A double-pole circuit, and one 15A single-pole circuit. It is used in compatible ABB and legacy GE residential or light commercial load centres where additional circuits are needed without adding a subpanel.
Use for
Use for panel retrofits, renovations, and service upgrades where a compatible Q-Line load centre accepts tandem or quad breakers. Typical applications include adding a 240V load on the 30A 2-pole section along with two 120V branch circuits on the 20A and 15A poles.
As a rule of thumb, continuous loads should not exceed 80% of breaker rating, so a 15A circuit is typically loaded to 12A continuous and a 20A circuit to 16A continuous. Actual loading depends on equipment, conductor sizing, installation conditions, and local electrical code.
Avoid for
Avoid using this breaker in non-compatible panels, in positions not approved for quad breakers, or where a different breaker series is specified. Do not use it as a substitute for AFCI, GFCI, or higher interrupting capacity protection where those are required by code or application.
Best for
Best for electricians and maintenance buyers who need to free up panel space while keeping a factory-listed breaker format. It is a practical choice when one 2-pole 30A circuit and two separate 120V circuits must fit into limited load centre space.
Installed in
Installed in compatible ABB Q-Line and legacy GE PowerMark load centres and panelboards approved for THQL tandem and quad breaker use. Always confirm the panel label, breaker schedule, and permitted mounting positions before installation.
Why this product exists
This breaker exists to increase usable circuit count in a standard plug-in panel footprint. Instead of consuming more full-size breaker spaces, it combines multiple protected circuits into a quad arrangement for space-constrained distribution work.
Compared with similar products
Compared with a standard 2-pole or single-pole breaker, this quad breaker supports more branch circuits in less panel space. Compared with tandem-only options, it adds a 30A 2-pole circuit alongside two single-pole circuits, which can reduce the need for a subpanel when the load centre is approved for quad configurations.
Specifications
- Manufacturer part number: THQLQ203015
- Brand: ABB
- Breaker family: Q-Line
- Type: Quad plug-in thermal-magnetic circuit breaker
- Configuration: 20A 1-pole + 30A 2-pole + 15A 1-pole
- Voltage rating: 120/240 VAC
- Interrupting rating: 10 kAIC
- Mounting: Plug-in
- Panel compatibility: Compatible ABB/GE Q-Line and PowerMark load centres where quad breakers are approved
- Conductor compatibility: Copper and aluminium conductors where permitted by terminal rating and installation instructions
- Standards/listing: UL listed; check local Canadian approval requirements and panel labelling before installation
- BrandABB Electrical Distribution
- Warranty5 year
- Electrical
- Poles1 Pole
- Amps20A-220A-20A
- 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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