Federal Pacific 3P70 NA370 - 70A 3 Pole Molded Case Circuit Breaker
- 70A
- 3 Pole
- Plug-On
Quantity
Federal Pacific NA370 - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Heavy-duty three-phase circuits in legacy buildings depend on robust thermal-magnetic protection like this 70A breaker. It ensures continuous operation for commercial and industrial loads. Engineered to slide into Federal Pacific Stab-Lok load centers, it eliminates the hassle of retrofitting entire panelboards. Electricians frequently utilize this model to swap out failing UBIF370N breakers.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | 3P70 |
| Series | NA |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 4-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
Product FAQs
6 answersWhat load centers are compatible with the NA370 circuit breaker?
This breaker is designed exclusively for use in legacy Federal Pacific Stab-Lok 3-phase load centers. It features the proprietary Stab-Lok plug-on mounting clip and will not fit in standard modern panels from other manufacturers.
How much panel space does the 3P70 require?
As part of the NA series, this is a thick Stab-Lok breaker. It requires three 1-inch spaces, taking up 3 inches of total width in a compatible Federal Pacific panelboard.
Is there an aftermarket replacement available for the Federal Pacific 3P70?
Yes, Connecticut Electric manufactures a direct aftermarket replacement under the UBI brand. The cross-reference part number for this 70A 3-pole breaker is UBIF370N.
What type of protection does the thermal-magnetic trip unit provide?
The fixed thermal-magnetic mechanism provides standard LI protection. The thermal element handles long-time overload conditions, while the magnetic element provides instantaneous tripping during a short circuit.
What wire sizes are accepted by the load lugs on this breaker?
The load side lugs are rated to accept either copper or aluminum conductors ranging from 4 AWG up to 1/0 AWG. Ensure proper torque specifications are followed during installation.
Can the NA370 be used on 480V systems?
No, this breaker has a maximum voltage rating of 240VAC and an interrupting capacity of 10kA at that voltage. It is not rated for 480V applications.
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