Federal Pacific NM632300 Molded Case Circuit Breaker
- 300A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific NM632300 - 300A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built to support legacy infrastructure, this 300A molded case circuit breaker provides essential long-time and instantaneous overcurrent defense. It is an ideal solution for maintaining continuity in older buildings. The device installs seamlessly into Federal Pacific NM series panelboards and switchboards. By utilizing the original N-frame footprint, it eliminates the need for complex retrofits. Rated for 30kA interrupting capacity at 480VAC, it includes an interchangeable trip unit.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NM632300 |
| Series | NM |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | NM |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NM Panelboards and Switchboards |
| Wire Gauge | (1) 1/0 AWG - 600 kcmil |
| Max Wire | 600 kcmil |
| Min Wire | 1/0 AWG |
| 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, Lug Kit |
|---|---|
| Accessories | Lugs Not Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat panelboards are compatible with the NM632300 circuit breaker?
This breaker is specifically designed for legacy Federal Pacific NM panelboards and switchboards. It utilizes a bolt-on mounting configuration to secure directly to the busbar in these enclosures.
What wire sizes do the standard lugs on the NM632300 accept?
The standard terminal lugs accommodate a single conductor ranging from 1/0 AWG to 600 kcmil. Always verify that the wire material and size comply with local electrical codes for a 300A circuit.
Can the trip unit on the NM632300 be swapped out?
Yes, Federal Pacific NM frame breakers feature an interchangeable trip unit design. This allows electricians to replace or upgrade the thermal-magnetic trip mechanism without having to remove the entire breaker frame from the switchboard.
How does the adjustable magnetic trip function operate on this breaker?
The adjustable magnetic trip allows panel builders and electricians to fine-tune the instantaneous short-circuit response. This adjustability helps achieve proper selective coordination with downstream devices in the electrical distribution system.
Is the Federal Pacific NM632300 still in active production?
No, Federal Pacific Electric is no longer in business, and the NM series is obsolete. Sourcing this breaker typically involves finding legacy surplus stock to maintain existing switchboards without requiring a full system retrofit.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JGJoseph G.ReviewingFederal Pacific NM031500 Trip UnitI recommend this productRated 5 out of 5 stars2/1/18The best
Just what I expected