Federal Pacific NJJ221400 Molded Case Circuit Breaker
- 400A
- 2 Pole
- Bolt-On
Quantity
Federal Pacific NJJ221400 - 400A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the classic N-frame series, the Federal Pacific NJJ221400 delivers 400A of thermal magnetic protection. It is specifically designed to maintain and service existing commercial infrastructure. This 2-pole bolt-on MCCB installs into original Federal Pacific distribution panels and switchboards without modification. It provides an exact replacement solution and substitutes for the NJL221400. With a 22kAIC rating at 240VAC, it ensures robust fault clearing and includes load lugs.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NJJ221400 |
| Series | NJJ |
| Amperage | 400A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 22kA @ 240VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Distribution Panels, Switchboards |
| Wire Gauge | 250 kcmil - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat type of enclosures or panels are compatible with the NJJ221400?
This N-frame breaker is designed for use in legacy Federal Pacific distribution panels and switchboards that accept bolt-on MCCBs.
What wire gauge range is supported by the lugs on this breaker?
The terminal lugs on the NJJ221400 accept wire sizes ranging from 250 kcmil to 500 kcmil. Ensure your conductors are properly sized for a 400A load according to the National Electrical Code (NEC).
Are the trip settings on the NJJ221400 adjustable?
No, this breaker features fixed thermal and fixed magnetic trip elements for its long-time and instantaneous (LI) protection functions. The trip points cannot be adjusted in the field.
What does the LI trip function code indicate on this breaker?
The LI designation means the breaker provides Long-Time (thermal) and Instantaneous (magnetic) protection. Long-Time protects against sustained overloads, while Instantaneous trips immediately during short circuits.
Is the Federal Pacific NJJ221400 still actively manufactured?
Federal Pacific Electric (FPE) is no longer in business, making original NJJ-series breakers legacy components. They are typically sourced as exact replacements for existing FPE switchboards to avoid costly panel retrofits.
Does this breaker fall under the residential Stab-Lok safety concerns?
No. The well-known safety advisories regarding Federal Pacific equipment primarily apply to residential Stab-Lok load centers and miniature breakers. The NJJ221400 is a commercial and industrial molded case circuit breaker (MCCB) that uses a secure bolt-on connection.
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.