Eaton / Westinghouse NC31200F Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Eaton / Westinghouse NC31200F - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for demanding industrial environments, this 1200A MCCB provides advanced electronic trip protection. It is part of the legacy Westinghouse N-Frame family. This unit serves as a direct replacement that installs into older Westinghouse CDP and FDP panelboards or switchboards. It is officially replaced by the Eaton ND31200. Rated for 30 kAIC at 480VAC, it utilizes a Seltronic solid-state trip unit with adjustable LS functions. A separate rating plug is required to finalize settings.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Series | NC |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse CDP Panelboards, FDP Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| Trip Adjustability | Adjustable |
| Available Options | Rating Plugs, Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489, CSA, IEC 60947-2 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Seltronic Trip Unit, Requires Rating Plug, Solid State Trip |
Product FAQs
6 answersWhat is the direct replacement for the obsolete Westinghouse NC31200F?
The Eaton ND31200 is the official current production replacement for this legacy Westinghouse N-Frame circuit breaker.
Does the NC31200F breaker frame require a rating plug to operate?
Yes. Because it utilizes a Seltronic solid-state trip unit, a separate rating plug is required to establish the final continuous ampere rating and complete the installation.
What do the LS trip functions on the Seltronic NC31200F indicate?
The LS designation means the electronic trip unit includes adjustable Long-Time and Short-Time protection. This allows panel builders and electricians to precisely coordinate overload and short-circuit response times for the specific application.
Which enclosures and panelboards are compatible with the NC31200F circuit breaker?
This bolt-on N-Frame breaker is engineered as a direct fit for legacy Westinghouse CDP and FDP panelboards, as well as compatible switchboards and Motor Control Centers.
What are the advantages of the Seltronic electronic trip unit on the NC31200F?
Unlike traditional thermal-magnetic mechanisms, the Seltronic solid-state trip unit measures current electronically. This delivers greater tripping accuracy, enhanced repeatability, and field-adjustable settings for advanced electrical system coordination.
Does the standard NC31200F circuit breaker include ground fault protection?
No. The standard NC31200F frame provides Long-Time and Short-Time (LS) protection only. Applications requiring integrated equipment ground fault protection typically use the NCG or HNCG variants from the same frame family.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 7 reviews.
- LOleonard o. s.Verified BuyerReviewingFederal Pacific NC0250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/6/26Super good
Worked with no problem better than some the junk on the market
- DBdonnie b.Verified BuyerReviewingFederal Pacific NC015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/27/26breaker
Had a warranty issue and account manager was AWESOME / Keizer Davids
- JNJoe N.Verified BuyerReviewingFederal Pacific NC020 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/25Purchased four circuit breakers
Was happy with all the service would’ve wished the person would inform me if I would’ve spent $15 more I could’ve got free shipping. That way I could’ve ordered another 20 amp circuit breaker. And got it for free.
- PMPatrick M.ReviewingFederal Pacific NC015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars5/31/23great selection and free delivery!!!
great selection and free delivery!!!
- MPMark P.ReviewingFederal Pacific NC015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/27/23Quick
Provided quick turnaround 👍. Resolved my parents issue 👍