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Compact beige plastic circuit breaker with black toggle switch and metal terminal lugs, 3.4 by .5 by 2.6 inches

Federal Pacific

Federal Pacific UBIF050N 50A 1 Pole Miniature Circuit Breaker

SKU CH-A6JD-N5ZNS

Single-pole miniature circuit breaker rated 50 A at 120 V AC with a 10 kA interrupting capacity, plug-in mounting and a toggle actuator for Federal Pacific load centres

  • Rated 50 A for reliable single-phase protection
  • 10 kA interrupting capacity handles high fault currents
  • Plug-in mounting fits Federal Pacific X125-0816C load centres
  • Compact 3.4 in length saves panel space
  • Operates from 0 °F in cold environments

Federal Pacific UBIF050N 50A Breaker

This single-pole miniature circuit breaker rated at 50 amps protects 120V AC branch circuits in compatible Federal Pacific load centres. It is intended for electricians and facility managers who need a plug-in replacement for standard UBIF-series panels. The toggle actuator provides clear on-off indication during maintenance.

120V AC Standard Interface Limits

The breaker carries a 10kA interrupting rating at 120 volts AC and is not rated for DC applications. It fits only single-phase panels in the X125-0816C series using a plug-in mounting style with lug terminals. Installers must verify panel compatibility before fitting because the device will not seat in other load-centre families.

50 Amp Capacity With 60A Frame

A 60-amp frame size gives modest headroom above the 50-amp trip rating for short-duration inrush currents. The breaker handles typical lighting and receptacle loads but reaches its limit on continuous heavy-appliance circuits exceeding its nameplate value. Operation below zero degrees Fahrenheit is outside the specified temperature range.

Highlights

  • Rated 50 A for reliable single-phase protection
  • 10 kA interrupting capacity handles high fault currents
  • Plug-in mounting fits Federal Pacific X125-0816C load centres
  • Compact 3.4 in length saves panel space
  • Operates from 0 °F in cold environments

Specifications

BrandFEDERAL PACIFIC

Questions about this item

Which amperage and pole count should I select for a single-phase 120 V circuit?

This breaker is rated 50 A with one pole, matching a single-phase 120 V AC load centre.

What does the 10 kA AIR rating mean when the breaker is installed?

It can safely interrupt up to 10 000 amps of fault current at 120 V AC without damage.

How does the plug-in mounting and lug terminal limit the wire size I can use?

The plug-in design fits Federal Pacific load centres, and the lug terminal accepts conductors suited to the 60 A frame.

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