Federal Pacific XJL434250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific XJL434250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for heavy-duty industrial applications, this 250-amp, 3-pole circuit breaker offers robust thermal-magnetic protection. The unit is specifically engineered to handle demanding commercial loads with fixed thermal and adjustable magnetic trip settings. Designed to mount into legacy Federal Pacific switchgear, this bolt-on MCCB ensures an exact fit without the need for retrofit kits. With a 150kAIC rating at 480V, the Fusematic design limits let-through current during short circuits.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | XJL434250 |
| Series | XJL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 150kA @ 240VAC, 150kA @ 480VAC, 100kA @ 600VAC |
| Frame Type | XJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Switchgear, Federal Pacific Panelboards |
| 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 |
|---|---|
| Accessories | Current Limiting Fuses |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Current Limiting, Fusematic, Internal Fuses, Non-Interchangeable Trip |
| Special Features | Current Limiting (Integrally Fused) |
Product FAQs
5 answersWhat type of enclosures or panels accept the XJL434250 breaker?
This X-Frame breaker is engineered as a direct bolt-on replacement for legacy Federal Pacific switchgear and panelboards. It does not require aftermarket retrofit kits for installation in original FPE equipment.
How does the XJL434250 achieve its high interrupting capacity?
As part of the Federal Pacific Fusematic line, this current-limiting breaker combines standard thermal-magnetic trip elements with internal fuses. This hybrid design restricts let-through energy during severe faults, allowing it to safely interrupt up to 150kA at 480VAC.
Can the trip unit on the XJL434250 be adjusted in the field?
The thermal element is fixed for continuous overload protection, but the magnetic instantaneous trip is adjustable. This allows electricians to fine-tune the short-circuit response for proper selective coordination with downstream devices.
What trip functions are included in the XJL434250?
It features an LI (Long-Time, Instantaneous) trip configuration. The long-time function handles sustained overloads, while the instantaneous function, backed by internal current-limiting fuses, clears high-level short circuits.
Is the XJL434250 interchangeable with standard FPE molded case breakers?
The XJL is a specific current-limiting X-Frame breaker. While it fits Federal Pacific gear, it is physically and electrically distinct from standard non-fused frames. Verify your existing breaker is an XJL type before replacing.
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.