Milbank UQFB-100 Molded Case Circuit Breaker
- 100A
- 2 Pole
- Bolt-On
Quantity
Milbank UQFB-100 - 100A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built to protect circuits against overloads and short circuits, the Milbank UQFB-100 is a 2-pole molded case circuit breaker rated 100A and 240VAC, with an interrupting rating of 10kAIC at 240V. It belongs to the UQFB series and uses an F frame with bolt-on mounting. Fixed thermal and fixed magnetic tripping provide long-time and instantaneous protection. The breaker has load side lug terminals and UL approval.Specifications
| Brand | Milbank |
|---|---|
| Part Number | UQFB-100 |
| Series | UQFB |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| Wire Gauge | 3-1 AWG (Cu), 1-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 3 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
Product FAQs
8 answersHow should I use the Milbank UQFB-100's 100A rating when selecting a breaker?
The 100A rating is the breaker's rated current, not its short-circuit interrupting capacity. Select it by coordinating the circuit load and conductor ampacity with the applicable installation requirements.
What electrical configuration is the UQFB-100 rated for?
The UQFB-100 is a 2-pole breaker rated for 240VAC, single-phase service. Use these ratings to match the circuit voltage, phase and number of poles required.
How do I check whether the interrupting rating is adequate?
The interrupting rating is 10kAIC at 240V. Available fault current at the installation point must not exceed that rating when selecting the breaker for that voltage.
How does the thermal-magnetic trip operate, and can I adjust it?
Thermal-magnetic protection provides a long-time response to sustained overloads and an instantaneous response to high fault current. Both the thermal and magnetic trip settings are fixed, so select the breaker for its built-in trip characteristics rather than field adjustment.
How is the breaker mounted, and where do the outgoing conductors connect?
The breaker uses bolt-on mounting and a load-side lug connection. Plan for a bolted mounting installation and terminate the outgoing circuit conductors at the load-side lug.
What dimensions should I allow for installation planning?
The breaker measures 7.44 in high, 3.28 in wide and 3 in deep. Use these dimensions to plan the breaker footprint, with additional space for conductor routing and installation access.
Is the UQFB-100 UL approved?
The UQFB-100 has UL approval. This supports selection where UL safety evaluation is a procurement or project requirement.
What copper and aluminum conductor sizes can I terminate?
The conductor ranges are 3-1 AWG (Cu) and 1-1/0 AWG (Al). Choose a size within the range for your conductor material that also meets the circuit's ampacity requirements.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- KGKurt G.Verified BuyerReviewingMilbank UQFB-200-X1 2 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars7/29/25Happy
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