Milbank UQFB-3 Circuit Breaker...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$939.09
Milbank UQFB-3 125-200 Ampere 3 Pole 120-240 Volt Bolt-on 10K AIC

Milbank UQFB-3 Circuit Breaker 125-200 Ampere 3-Pole 120-240V Thermal Magnetic Protection System

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Model: UQFB-3125

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

$939.09
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Milbank UQFB-3 Circuit Breaker 125-200 Ampere 3-Pole 120-240V Thermal Magnetic Protection System

Professional electrical protection with thermal magnetic trip technology

The Milbank UQFB-3 Circuit Breaker delivers reliable 3-phase electrical protection with 125-200 ampere capacity and 120-240V operation. This F-Frame circuit breaker features thermal magnetic trip technology, 10,000 ampere interrupting capacity, and bolt-on installation for secure panel mounting. Built with non-metallic construction and lever actuator operation, this UL Listed device provides professional-grade current interrupting performance for demanding electrical applications.

Professional Features & Benefits

  • 125-200 Ampere Rating: Handles substantial electrical loads with reliable overcurrent protection for high-demand circuits.
  • 10,000 AIC Rating: Provides robust fault current interrupting capability for enhanced electrical system safety and protection.
  • Thermal Magnetic Trip: Combines thermal and magnetic protection technologies for precise overcurrent detection and reliable circuit interruption.
  • 3-Phase Operation: Supports balanced three-phase electrical systems with 240V AC voltage rating for commercial and industrial applications.
  • Bolt-On Design: Ensures secure mechanical and electrical connection to panel with positive mounting for vibration resistance.
  • UL Listed Certification: Meets rigorous safety and performance standards for code compliance and professional installation confidence.
  • F-Frame Construction: Provides compact yet robust housing with lever actuator for reliable manual operation and reset capability.

Technical Specifications

  • Actuator: Lever
  • Application: Metering Accessory
  • Auxiliary Contacts: No Auxiliary Contacts
  • Brand Name: Milbank
  • Connection: Lug to Lug
  • Departent: Electrical
  • Frame: F-Frame
  • Frequency Rating: 60 Hertz
  • Interrupt Rating: 10,000 Ampere Interrupting Capacity
  • Number Of Poles: 3
  • Operating Temperature: 40 Degrees Celsius
  • Phase: 3 Phase
  • Product Family Code: MSCB
  • Product Height: 7.438 IN
  • Product Length: 3.281 IN
  • Product Material: Non Metallic
  • Product Type: Current Interrupting Device
  • Special Features: Bolt On
  • Standard: UL Listed
  • Trip Type: Thermal Magnetic
  • Unspsc Number: 39121601
  • Voltage Rating: 240 Volts Alternating Current
  • Width: 4.5 IN

Professional Applications

  • Commercial Electrical Panels
  • Industrial Control Centers
  • Multi-Unit Residential Properties
  • Professional Office Buildings
  • Retail and Service Establishments
  • Light Industrial Facilities
  • Electrical Distribution Systems

Why Choose Milbank Quality?

Milbank circuit breakers deliver proven reliability with UL Listed certification and thermal magnetic protection technology. The F-Frame construction and non-metallic materials provide durability for long-term electrical system protection, while the 10,000 AIC rating ensures robust fault current handling capability for professional electrical installations.

Manufacturer Resources

Product Specs

Actuator:
Lever
Application:
Metering Accessory
Auxiliary Contacts:
No Auxiliary Contacts
Brand Name:
Milbank
Connection:
Lug to Lug
Frame:
F-Frame
Frequency Rating:
60 Hertz
Interrupt Rating:
10,000 Ampere Interrupting Capacity
Number Of Poles:
3
Operating Temperature:
40 Degrees Celsius
Phase:
3 Phase
Product Family Code:
MSCB
Product Height:
7.438 IN
Product Length:
3.281 IN
Product Type:
Current Interrupting Device
Special Features:
Bolt On
Standards:
UL Listed
Trip Type:
Thermal Magnetic
Unspsc Number:
39121601
Voltage Rating:
240 Volts Alternating Current
Product Material:
Non Metallic
Product Width:
4.5 IN
Department:
Electrical
Product Subgroup:
Electrical
Connection Type:
Lug To Lug
Number of Phases:
3
Product Details:
Current Interrupting Device
Frequency:
60 hertz

Milbank UQFB-3125 – Frequently Asked Questions

1) Will the Milbank UQFB-3 breaker work on a 3-phase 240V service?
That's exactly what the UQFB-3 is built for: 3 poles, 3 phase, rated 240 volts AC at 60 hertz. It is not a single-phase two-pole device, so on a 120/240V single-phase panel you'd be leaving a pole unused and should look at a 2-pole breaker instead.
2) What amp ratings does the Milbank UQFB-3 come in?
Four ratings: 125A (UQFB-3125), 150A (UQFB-3150), 175A (UQFB-3175), and 200A (UQFB-3200). Same F-Frame body across all four, so the panel opening and mounting don't change with the amperage you pick, only the trip rating does. Size it to the circuit's overcurrent protection on the drawing, not to the largest one that fits.
3) Is the UQFB-3 a bolt-on or a plug-in circuit breaker?
Bolt-on. The UQFB-3 fastens mechanically to the bus rather than clipping on, which is what you want where vibration is a factor and what most commercial panel schedules call for. If your panel interior is built for plug-in breakers, this one will not seat, so confirm the interior takes bolt-on before ordering.
4) Does the Milbank UQFB-3 have a high enough interrupting rating for my service?
The UQFB-3 is rated 10,000 AIC. That covers most commercial panel and metering applications, but on a service with available fault current above 10kA at the breaker, this device is not adequate and you need a higher-AIC breaker or series-rated combination that the engineer has signed off on. Get the available fault current from the utility or the study before you commit.
5) How does the UQFB-3 land conductors, and do I need a lug kit?
Lug to lug, so terminations are made at lugs on both line and load ends of the breaker. There's no plug-in stab or busbar-tap arrangement to account for. Physically it's 7.438 in high, 3.281 in long, and 4.5 in wide, which is what to check against the gutter space you have for bending the feeders in.
6) What is a thermal magnetic trip and is it right for a feeder breaker?
Thermal magnetic means two trip mechanisms in one breaker: a bimetal that responds slowly to sustained overload and a magnetic element that trips instantly on a short circuit. That combination suits general feeder and branch protection, where you want the breaker to ride through motor inrush but clear a bolted fault fast. It is not an adjustable electronic-trip breaker, so there are no pickup or delay settings to coordinate with.
7) Can I add auxiliary or alarm contacts to the Milbank UQFB-3 for remote breaker status?
No. The UQFB-3 ships with no auxiliary contacts, and operation is a plain lever actuator you throw by hand. If the job needs breaker position fed back to a BAS or an alarm panel, this is the wrong device and you'll need a breaker that accepts an auxiliary switch.
8) Is the Milbank UQFB-3 UL Listed for a permit inspection?
UL Listed, which is what an inspector is looking for on a current interrupting device in a commercial installation. The listing standard is the only certification carried on the UQFB-3.
9) Where does a Milbank UQFB-3 breaker normally get installed?
It's a metering accessory breaker, so its home is Milbank metering equipment and meter-main assemblies rather than a general-purpose loadcenter. On multi-unit residential and small commercial services, that's the breaker in the meter socket or metering pack feeding a tenant's panel. If you're filling a distribution panelboard, you want a breaker cataloged for that panel, not a metering accessory.
10) Is the housing on the Milbank UQFB-3 metal or plastic?
Non-metallic case. Standard molded-case construction for this class of breaker, and the reason the body itself is insulating between the poles and the enclosure.
11) What UNSPSC code should I use for a Milbank UQFB-3 on a purchase requisition?
39121601. Facility and government procurement systems that classify by UNSPSC will take that code for the UQFB-3 circuit breaker.
How fast can I get the Milbank UQFB-3125 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 Milbank UQFB-3125 come with a warranty?
Absolutely. The Milbank UQFB-3125 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 Milbank UQFB-3125?
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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