Circuit Breaker · 90A 2-Pole 120/240V AC · Bolt-On Thermal-Magnetic · ABB THQB2190
What this product is for
The ABB THQB2190 is a Q-Line miniature circuit breaker designed for branch circuit protection in compatible bolt-on panelboards, lighting panels, and load centres. It provides thermal-magnetic protection for overloads and short circuits on 120/240V AC systems.
Use for
- Protecting 120/240V AC circuits rated up to 90A
- ABB/GE Q-Line bolt-on panel applications
- Larger single-phase loads, subfeed circuits, and equipment circuits where a 2-pole common-trip breaker is specified
Typical guidance: a 90A 2-pole breaker is commonly selected for feeder or equipment protection where conductor size, load calculation, and panel listing permit. Continuous loads are typically limited to 80% of breaker rating by code rule, so actual usable load depends on the installation.
Avoid for
- Panels that require plug-on breakers instead of bolt-on types
- Applications needing a higher interrupt rating than 10 kAIC
- Circuits where the panel manufacturer listing does not identify THQB series compatibility
Best for
Electricians and maintenance teams replacing an existing ABB or legacy GE Q-Line bolt-on breaker with the same form factor, pole count, voltage class, and ampere rating.
Installed in
Commercial and residential distribution equipment using compatible Q-Line bolt-on interiors. The breaker body is approximately 2 in W x 3-9/32 in H x 2-3/8 in D (about 51 mm x 83 mm x 60 mm), with a compact format commonly referenced as 1 in (25.4 mm) per pole.
Why this product exists
This breaker provides a bolt-on alternative where secure mechanical mounting to the bus is required instead of plug-on installation. The thermal element responds to overload conditions, while the magnetic trip responds to short-circuit faults.
Compared with similar products
Compared with THQL versions, the THQB series is bolt-on rather than plug-on. That matters when matching the breaker to the panel interior. Compared with higher-duty models, this unit carries a 10 kAIC interrupt rating, so it is intended for applications where available fault current does not exceed that rating.
Specifications
- Manufacturer part number: THQB2190
- Brand: ABB
- Series: Q-Line
- Type: Miniature circuit breaker, bolt-on
- Pole count: 2-pole
- Ampere rating: 90A
- Voltage rating: 120/240V AC
- Interrupt rating: 10 kAIC
- Trip type: Thermal-magnetic
- Mounting: Bolt-on
- Common trip: Yes
- Conductor range: 6 to 1/0 AWG copper; 4 to 1/0 AWG aluminium
- Typical applications: Lighting panels, load centres, branch and feeder circuits
- Compliance: Listed by source distributors/manufacturer catalogue references; verify local approval and panel compatibility before installation
Actual performance depends on installation conditions, available fault current, conductor selection, enclosure rating, and local electrical code.
- BrandABB Electrical Distribution
- Warranty5 year
- Electrical
- Poles2 Pole
- Amps90A
- Voltage120/240
- Interrupt Rating (AIC)10
- Physical
- MountingBolt On
- Width2"
- Breaker TypeStandard
Minimum Order $20
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Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
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
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
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
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.