NA2P125 - Federal Pacific - Stab-Lok Plug-In Circuit Breaker - 125 Amp - 2 Pole - 240 Volt (Used)
NA2P125 - Federal Pacific - Stab-Lok Plug-In Circuit Breaker - 125 Amp - 2 Pole - 240 Volt (Used)
Product images are representative only. Actual product may vary.
The Federal Pacific NA2P125 is a 125A, 2-pole thermal-magnetic Stab-Lok plug-in circuit breaker rated 120/240VAC, sized full-width at one inch per pole for original FPE Stab-Lok load centers.
This unit is sold in used condition and carries a 1-year warranty.
Federal Pacific stopped manufacturing decades ago, which leaves owners of Stab-Lok panels with a supply problem: nothing else fits the bus stab geometry, and the panel cannot be partially converted. The NA2P125 is the original full-size, one-inch-per-pole format — not the thin twin body — so it seats correctly on the bus without adapters or modification. It delivers thermal-magnetic Long-Time and Instantaneous (LI) protection with a 10kA short-circuit rating at 120/240VAC and common trip linking both poles. Where original stock is unavailable, the UBIFPE125N is a recognized modern substitute for this position.
Specifications
| Brand | Federal Pacific (FPE) |
|---|---|
| Series | NA — Stab-Lok |
| Part Number | NA2P125 |
| Amperage | 125A |
| Voltage | 120/240VAC |
| Poles | 2 |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Mounting Style | Plug-On (Stab-Lok) |
| Terminal Type | Lugs |
| For Use With | Federal Pacific Stab-Lok Panelboards and Load Centers |
| Trip Technology | Thermal Magnetic (LI — Long-Time, Instantaneous) |
| Trip Adjustability | Fixed |
| Wire Range | #4 AWG – 2/0 AWG |
| Width | Full Size — 1 inch per pole (2 inches total) |
| Modern Substitute | UBIFPE125N |
| Standards | CSA C22.2 No. 5 |
| Approvals | CSA |
| Construction Features | Stab-Lok System, Common Trip, Full-Size Body |
| Operating Temperature | 40°C |
| Shipping Dimensions | 6 x 6 x 6 in |
| Shipping Weight | 3 lb |
| Condition | Used — 1 Year Warranty |
Frequently Asked Questions
What condition is this NA2P125 in, and is it warrantied?
It is a used unit, tested and sold with a 1-year warranty. Used breakers are the practical option for legacy Stab-Lok panels where new-old-stock is scarce.
What is the difference between the full-size and thin Stab-Lok breakers?
Stab-Lok was made in both a full-size body at one inch per pole and a narrower thin body. They are not interchangeable in every panel position. The NA2P125 is the full-size format, occupying two inches for its two poles.
What panels does the NA2P125 fit?
Federal Pacific Stab-Lok panelboards and load centers. The Stab-Lok bus stab geometry is proprietary, so breakers from other manufacturers will not seat correctly.
Are there known concerns with Federal Pacific Stab-Lok panels?
Yes. Stab-Lok breakers have been the subject of long-standing reports and litigation regarding failure-to-trip under fault conditions, and many inspectors and insurers recommend replacing the panel entirely rather than servicing it. If you are maintaining an existing panel rather than planning a replacement, have the installation evaluated by a licensed electrician.
What is a recognized modern substitute?
The UBIFPE125N is a currently manufactured breaker listed as a replacement for this Stab-Lok position when original stock is unavailable.
What is the interrupting rating?
10kA at 120/240VAC.
What wire sizes does the NA2P125 accept?
#4 AWG through 2/0 AWG conductors.
Does the NA2P125 have common trip?
Yes. Both poles are internally linked, so a fault on either pole opens the entire two-pole circuit.
1 YEAR WARRANTY
Backed by a full 1-year warranty against manufacturing defects. If your product experiences any issues within this period, contact us for repair, replacement, or support.