Eaton / Westinghouse NB3600PR NB3600P - 600A 3 Pole Molded Case Circuit Breaker
- 600A
- 3 Pole
- Bolt-On
Quantity
Eaton / Westinghouse NB3600P - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Operating as a high-capacity safeguard, the Eaton NB3600PR is a 600A, 3-pole current-limiting circuit breaker. It utilizes thermal-magnetic trip technology to protect industrial switchboards and motor control centers. This legacy bolt-on device is engineered to fit seamlessly into existing Westinghouse PRL4 panelboards without modifications. For complete panel upgrades, the Eaton Series C ND frame replaces this older NB series. The unit features an impressive 200kAIC rating at 480VAC.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | NB3600PR-R |
| Series | NB |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 200kA @ 600VAC, 100kA @ 250VDC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse PRL4 Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Current Limiters |
| Standards | NEMA AB-1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Fused, Interchangeable Trip Unit |
| Special Features | Current Limiting (Integrally Fused) |
Product FAQs
5 answersWhich panelboards accept the NB3600P circuit breaker?
This NB frame breaker is designed for installation in Eaton, Cutler-Hammer, and legacy Westinghouse Pow-R-Line 4 (PRL4) panelboards, as well as compatible switchboards and motor control centers.
Are the trip settings adjustable on this breaker?
Yes, it features an interchangeable thermal-magnetic trip unit with fixed long-time (thermal) and adjustable instantaneous (magnetic) settings to fine-tune short-circuit protection.
What is the advantage of the current limiting design on the NB3600P?
Current limiting breakers clear high-level faults within the first half-cycle. This rapid response drastically reduces peak let-through current and energy, minimizing thermal and mechanical stress on downstream electrical components.
How does this breaker connect to the electrical system?
It utilizes a bolt-on, feed-thru mounting style. The breaker bolts directly to the panelboard bus for a secure connection and uses standard lug terminals for the load-side wiring.
Can the Eaton NB3600P replace older Westinghouse versions?
Yes. Because Eaton acquired the Westinghouse molded case circuit breaker line, modern Eaton or Cutler-Hammer NB3600P units are direct physical and electrical replacements for the original Westinghouse models.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 18 reviews.
- MMMike M.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/2/26100amp federal pacific breaker
So far the breaker works as expected
Just good to know some of these old federal are still available.
Thank you
- SGscott g.Verified BuyerReviewingFederal Pacific NB111020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/26/26Hard to find breakers
Had a project at a school built in the 1960’s and thought we were up a creek when confronted with ancient FPE commercial panels. Luckily we found what we needed with Suoerbreakers.
- BFBarry F.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/13/26Hard to find circuit breaker
Item was as described.
- WWWilliam W.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/9/26Exactly what I needed.
Awesome! Packaging and delivery were good. Bolted in and worked perfectly!!)
- GHGary H.Verified BuyerReviewingFederal Pacific NB125 - 125A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26Federal Pacific NB125 2 Pole Circuit Breaker
Federal Pacific NB125 2 Pole Circuit Breaker
Great product and excellent price and warranty.