Federal Pacific XJL434350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific XJL434350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for heavy-duty industrial applications, the Federal Pacific XJL434350 is a 350A, 3-pole molded case circuit breaker. It provides reliable power distribution for commercial facilities. This legacy component bolts into compatible Federal Pacific switchgear and panelboards, serving as an exact drop-in replacement for aging units without requiring retrofit adapters. Featuring Fusematic technology with internal fuses, this current-limiting breaker delivers up to 150kAIC at 480V.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | XJL434350-R |
| Series | XJL |
| Amperage | 350A |
| 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 enclosures are compatible with the XJL434350 circuit breaker?
This breaker mounts directly into legacy Federal Pacific switchgear and panelboards designed to accommodate X-frame molded case circuit breakers.
How does the current limiting feature of the XJL434350 operate?
The XJL frame is engineered to clear high-magnitude short circuits rapidly, restricting the peak let-through current and energy to protect downstream equipment during a fault.
Can the trip settings on the XJL434350 be adjusted in the field?
The thermal element for long-time overload protection is fixed, but the magnetic instantaneous trip function is adjustable to coordinate with other protective devices in the system.
Is the Federal Pacific XJL434350 still in active production?
No, Federal Pacific Electric is no longer manufacturing new equipment. Replacements for the XJL frame must be sourced from legacy inventory or replaced via engineered retrofit kits.
Does the XJL434350 share the safety concerns associated with Federal Pacific Stab-Lok breakers?
The widely documented safety issues with Federal Pacific primarily involve residential Stab-Lok load centers and miniature breakers. The XJL434350 is a commercial and industrial molded case circuit breaker and is not part of the Stab-Lok product line.
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