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Federal Pacific NA3P100 Miniature Circuit Breaker

  • 100A
  • 3 Pole
  • Plug-On
Federal Pacific NA3P100
Miniature Circuit Breaker
Brand Federal Pacific
SKU NA3P100
Select Item Condition
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  • 100A
  • 3 Pole
  • Plug-On

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Federal Pacific NA3P100 3 Pole Circuit Breaker

Federal Pacific NA3P100 - 100A 3 Pole Miniature Circuit Breaker

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$499.99 In Stock

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Description

Serving as a drop-in solution for commercial and industrial facilities, this 100-amp three-pole unit integrates with legacy infrastructure. It mounts into Federal Pacific Stab-Lok panelboards, providing a seamless match for original equipment without extensive retrofitting. The long body design incorporates common trip functionality and a color-coded handle, delivering a 10kAIC interrupting capacity at 240VAC for reliable three-phase distribution.

Specifications

Key specifications
Brand Federal Pacific
Part Number NA3P100
Series NA
Amperage 100A
Poles 3
Mounting Style Plug-On
Voltage 240VAC
Phase 3
AIC Rating 10kA @ 240VAC
Fit and installation
Terminal Type Lugs
For Use With Federal Pacific Stab-Lok Panelboards
Wire Gauge 14 AWG - 1/0 AWG
Max Wire 1/0 AWG
Min Wire 14 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Standards CSA C22.2 No. 5, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features Stab-Lok System, Common Trip, 1 Inch Per Pole, Color-Coded Handle

Product FAQs

7 answers
What panels are compatible with the NA3P100 circuit breaker?

This breaker is designed exclusively for Federal Pacific Electric (FPE) and Federal Pioneer Stab-Lok load centers and panelboards that accept 3-phase, plug-on breakers.

How much panel space does the NA3P100 require?

It requires three 1-inch spaces (3 inches total width) on the panel busbar.

What wire sizes are accepted by the lugs on this breaker?

The load-side lugs accept copper or aluminum wire ranging from 14 AWG up to 1/0 AWG.

Is the NA3P100 a direct replacement for older FPE Stab-Lok breakers?

Yes, it is a direct replacement for legacy Federal Pacific and Federal Pioneer 3-pole, 100-amp Stab-Lok breakers with the NA frame designation.

How does this breaker connect to the panel busbar?

It uses the proprietary Stab-Lok plug-on mounting system, which pushes directly onto the busbar stabs without the need for bolt-on hardware.

What type of trip mechanism does the NA3P100 use?

It features a fixed thermal-magnetic trip mechanism, providing both long-time overload protection and instantaneous short-circuit protection (LI).

Can this 3-pole breaker be used in a single-phase panel?

No, the NA3P100 is a 3-phase breaker and requires a compatible 3-phase Federal Pacific or Federal Pioneer panelboard to properly connect to all three busbar phases.

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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 28 reviews
Rating
Ratings
28 reviews
  • JM
    Jimmy M.
    Verified Buyer
    Reviewing
    Federal Pacific NA230 - 30A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/8/26
    NA230-30

    Breaker arrived well packaged and sealed. Installed easily and working great for the customer.

  • JE
    James E.
    Verified Buyer
    Reviewing
    Federal Pacific NA250 - 50A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/23/26
    Satisfactory

    Fast shipping and exactly as expected

  • ED
    Erik D.
    Verified Buyer
    Reviewing
    Federal Pacific NA250 - 50A 2 Pole Miniature Circuit Breaker
    I do not recommend this product
    Rated 1 out of 5 stars
    7/21/26
    Result of FP

    Breakers were wrong size and could not be useful....lost monies.

  • JL
    Jeff L.
    Verified Buyer
    Reviewing
    Federal Pacific NA20 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/22/26
    Hard to find breaker

    Fit perfectly. Great service

  • PP
    Paul P. J.
    Verified Buyer
    Reviewing
    Federal Pacific NA20 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    12/27/25
    perfect ...

    all is great in the universe the FP 20A Breaker worked perfect.