Connecticut Electric UBIF220NB Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Connecticut Electric
UBIF220NB
Miniature Circuit Breaker
Brand
Connecticut Electric
SKU
UBIF220NB
Quantity
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Connecticut Electric UBIF220NB - 20A 2 Pole Miniature Circuit Breaker
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Description
Serving commercial applications, the UBIF220NB delivers 20 amps of thermal-magnetic protection. This Connecticut Electric miniature circuit breaker maintains legacy systems safely. The bolt-on mounting style is configured for Federal Pacific Electric NBLP panelboards. It acts as a precise substitute for the discontinued NB220, ensuring seamless integration. Rated for 10kAIC at 120/240VAC, this Type NB breaker features a HACR rating and includes load side lugs.Specifications
| Brand | Connecticut Electric |
|---|---|
| Series | UBIF |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Electric (FPE) NBLP Panelboards |
| Wire Gauge | 14-6 AWG |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Accessories | Load Side Lugs Included, Mounting Hardware |
|---|---|
| Standards | HACR, UL 489 |
| Approval | ETL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, ETL Listed |
Product FAQs
7 answersWhat original Federal Pacific Electric part numbers does the UBIF220NB replace?
The Connecticut Electric UBIF220NB serves as a direct aftermarket replacement for obsolete 20-amp, 2-pole FPE Type NB breakers, including catalog numbers NB220 and NB221020.
Will this breaker fit standard residential FPE Stab-Lok panels?
No. The UBIF220NB is a bolt-on Type NB breaker designed exclusively for Federal Pacific Electric (FPE) NBLP commercial panelboards. It is not compatible with residential Stab-Lok load centers, which require plug-on breakers.
What is the physical width of this 2-pole breaker?
The UBIF220NB has a 2-inch wide body, which matches the standard 1-inch per pole width requirement for Type NB breakers in FPE NBLP panelboards.
What does the LI trip function code indicate on this breaker?
The LI designation means the breaker is equipped with a thermal-magnetic trip unit providing Long-Time thermal protection against gradual overloads and Instantaneous magnetic protection against short circuits.
Does the UBIF220NB snap into the panel bus?
No, this is a bolt-on circuit breaker. It must be mechanically fastened to the panelboard bus using screws, which provides a highly secure connection typical of commercial and industrial panelboards.
What is the acceptable wire gauge range for the terminal lugs?
The breaker lugs are rated to accept wire sizes ranging from 14 AWG to 6 AWG. Always torque the terminal screws to the manufacturer specified values during installation to ensure a secure connection.
Has this replacement breaker been tested to modern safety standards?
Yes. While it is designed to fit legacy FPE NBLP panels, the Connecticut Electric UBIF220NB is a modern replacement that has been tested and ETL listed to UL 489 standards for molded case circuit breakers.
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