Eaton BQ Series Quadplex Circu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,000.00
$146.91
Eaton BQ Series Quadplex Plug-On Circuit Breaker – 1-Inch CTL, 4-Pole, 120/240V, 10 kAIC, Type BR Loadcenters

Eaton BQ Series Quadplex Circuit Breaker 4-Pole 120/240V 10 kAIC with CTL Rejection Tab

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Model: BQ2502120

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,000.00
$146.91
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Eaton BQ Series Quadplex Circuit Breaker 4-Pole 120/240V 10 kAIC with CTL Rejection Tab

Professional 1-Inch CTL Plug-On Circuit Protection for Type BR Loadcenters

The Eaton BQ Series Quadplex Circuit Breaker delivers reliable four-pole circuit protection with 120/240V operation and 10 kAIC interrupt rating. This professional-grade plug-on circuit breaker features 1-inch CTL design with rejection tab technology for secure installation in Type BR loadcenters. Built for HACR applications with UL 489 certification, this quadplex breaker accommodates #14-4 AWG Cu/Al wire connections and provides independent trip operation for comprehensive electrical protection.

Professional Features & Benefits

  • 10 kAIC Interrupt Rating: Provides robust fault current protection capability for demanding electrical applications and enhanced system safety.
  • Four-Pole Configuration: Delivers comprehensive multi-circuit protection in a compact quadplex design for efficient panel space utilization.
  • CTL Rejection Tab Feature: Ensures proper circuit breaker selection and prevents incorrect installation for enhanced electrical safety compliance.
  • Plug-On Mounting Method: Enables quick and secure installation without additional hardware for streamlined electrical panel assembly.
  • UL 489 Certification: Meets rigorous safety and performance standards for reliable operation in commercial and residential applications.
  • #14-4 AWG Wire Compatibility: Accommodates both copper and aluminum conductors for versatile wiring applications and installation flexibility.
  • HACR Application Listing: Certified for heating, air conditioning, and refrigeration equipment protection with specialized load characteristics.

Technical Specifications

  • Catalog Notes: All Type BD Duplex and BQ Quadplex circuit breakers carry listing for HACR applications. All 15 and
  • Certifications: UL 489
  • Circuit Breaker Type: BQ
  • Compliances: Federal Specifications Classification W-C375
  • Interrupt Rating: 10 kAIC
  • Item Quantity: 28
  • Main Circuit Breaker: BQ
  • Mounting Method: Plug-on
  • Number Of Poles: Four-pole
  • Product Details: Type BQ 1-Inch CTL plug-on circuit breaker
  • Special Features: Includes rejection tab feature
  • Trip Type: Independent
  • Used With: Type BR Loadcenters
  • Wire Size: #14-4 AWG Cu/Al

Professional Applications

  • Commercial Electrical Panels
  • Industrial Control Centers
  • HVAC Equipment Protection
  • Multi-Unit Residential Properties
  • Professional Office Buildings
  • Retail and Light Commercial Facilities
  • Heating and Air Conditioning Systems

Why Choose Eaton Quality?

Eaton BQ Series circuit breakers provide dependable electrical protection with UL 489 certification and Federal Specifications compliance. The robust 10 kAIC interrupt rating and specialized HACR listing ensure reliable performance in demanding applications, while the CTL rejection tab feature enhances installation safety and code compliance for professional electrical installations.

Manufacturer Resources

Spec Sheet

Product Specs

Certifications:
UL 489
Circuit Breaker Type:
BQ
Compliances:
Federal Specifications Classification W-C375
Interrupt Rating:
10 kAIC
Item Quantity:
28
Main Circuit Breaker:
BQ
Mounting Method:
Plug-on
Number Of Poles:
Four-pole
Product Details:
Type BQ 1-Inch CTL plug-on circuit breaker
Special Features:
Includes rejection tab feature
Trip Type:
Independent
Used With:
Type BR Loadcenters
Wire Size:
#14-4 AWG Cu/Al
Department:
Electrical
Product Group:
Circuit Protection
Product Type:
Circuit Breaker
Product Subgroup:
Circuit Breakers

Eaton BQ2502120 – Frequently Asked Questions

1) Will an Eaton BQ quadplex breaker fit a Square D or Siemens panel?
No. The Eaton BQ quadplex is a plug-on breaker built for Eaton Type BR loadcenters, and it carries a rejection tab that physically blocks it from seating where it does not belong. If the panel is a Square D QO or Homeline, a Siemens, or any other make, the BQ will not go in. Check the label inside the panel door for Type BR before ordering.
2) What does a quadplex breaker actually do, and when should I use one instead of two 2-pole breakers?
A quadplex packs four poles into the space of two full-size 1-inch positions: an outer 2-pole circuit and a center 2-pole circuit, each with its own independent trip. Reach for one when a Type BR panel is out of spaces and you need to land two more 240V circuits, say an AC condenser and a range or a water heater, without swapping the loadcenter or adding a subpanel. If you have the spaces free, two separate 2-pole breakers do the same electrical job and are simpler to troubleshoot. The independent trip matters here: a fault on the center pair drops only that circuit, not the outer one.
3) My panel says CTL. Does that rule out a quadplex breaker?
It does the opposite. The BQ quadplex is a CTL breaker with the rejection tab, which is the design a CTL-rated Type BR loadcenter is looking for. CTL limits how many circuits a panel will accept, and the tab is what enforces it: the breaker only seats in a position the panel is rated to take. If a breaker will not physically go into a given slot, that is the CTL scheme working, not a defective part, and the answer is a different slot rather than forcing it.
4) Can I use an Eaton BQ quadplex on an air conditioner or heat pump circuit?
Yes. Type BQ quadplex breakers carry the HACR listing, so they are approved for heating, air conditioning and refrigeration equipment, which is the exact application most multi-family and light commercial panels need these for. Match the pole rating to the equipment nameplate maximum overcurrent protection, not to the wire alone.
5) What wire size will the lugs on an Eaton BQ quadplex accept, and can I land aluminum?
The terminals take #14 through #4 AWG, and they are rated for both copper and aluminum conductors. That covers a 15A branch circuit on #14 copper up through the heavier center-pole ratings on #4, and it means an existing aluminum feeder to a range or a condenser can be landed directly without a splice or a bimetal connector.
6) Will an Eaton BQ quadplex pass inspection on a federal or government job?
It is UL 489 listed and meets Federal Specifications Classification W-C375, which is the specification a lot of government, GSA and institutional submittals call out for molded case breakers. Between that and the UL 489 listing, it is the paperwork most facility and public-works specs are asking for on a branch breaker.
7) Can I get a 100A or larger circuit out of a quadplex breaker?
Yes, on the center poles. The center 2-pole positions go up to 115A, 120A and 150A, which is enough for a subpanel feeder or a large piece of equipment: BQ2502120 gives you a 120A center with a 50A outer, and BQ2202150 is a 150A center with a 20A outer. The outer poles top out at 50A, so if you need two heavy circuits rather than one, a quadplex is the wrong device and you want separate 2-pole breakers.
8) If one half of the quadplex trips, does the whole thing shut off?
No. Trip is independent, so the outer 2-pole circuit and the center 2-pole circuit operate separately. A short on the dryer will not take down the AC sharing the same breaker body. For a property manager that is the practical point: one tenant's fault does not black out the other circuit landed on the same device.
9) Is the Eaton BQ the same as a BR or BD breaker?
They are the same Type BR plug-on family but different bodies. BR is the standard single or double pole breaker, BD is the duplex (two independent 1-pole circuits in one space), and BQ is the quadplex, two independent 2-pole circuits. All three go into Type BR loadcenters. If what you pulled out has four hot leads and two handle ties, you need a BQ; if it has two separate single-pole handles, you want the BD duplex instead.
10) Do I need any mounting hardware or a filler kit to install a BQ quadplex?
Nothing extra. It is a plug-on breaker, so it snaps onto the bus stabs in a Type BR loadcenter and the only tool you need is a screwdriver for the lugs and the panel cover. No mounting screws, no adapter, no retaining clip to order alongside it.
How fast can I get the Eaton BQ2502120 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton BQ2502120 come with a warranty?
Absolutely. The Eaton BQ2502120 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton BQ2502120?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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