Federal Pacific XM433450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific XM433450 - 450A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the classic XM series, this 450A molded case circuit breaker provides robust power distribution for industrial facilities. It is designed to protect heavy-duty electrical systems against severe overcurrents. This bolt-on unit installs into existing Federal Pacific Fusematic panelboards and switchgear. It serves as an exact drop-in replacement, eliminating the need for complex retrofitting. Rated at 100 kAIC at 480VAC, the current-limiting design restricts let-through energy.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | XM433450-R |
| Series | XM |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 480VAC |
| Frame Type | XM |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Fusematic Panelboards, Federal Pacific Switchgear |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Non-Interchangeable Trip |
| Special Features | Current Limiting |
Product FAQs
6 answersWhat type of enclosures or panels accept the FPE XM433450 breaker?
This legacy XM frame breaker is specifically designed to mount in Federal Pacific Fusematic panelboards and Federal Pacific switchgear assemblies.
How is the XM433450 secured within the panel?
It utilizes a bolt-on mounting style to attach directly to the panel bus, ensuring a rigid and reliable connection in industrial switchgear.
Are the trip settings adjustable on the XM433450?
No, this breaker features a non-interchangeable thermal-magnetic trip unit with fixed thermal and fixed magnetic settings for long-time and instantaneous protection.
What does the -R signify in the XM433450-R catalog number?
The -R is an alternate part number designation used for sourcing the standard XM433450 Federal Pacific 450-amp circuit breaker.
Is the Federal Pacific XM433450 considered a current-limiting breaker?
Yes, this legacy MCCB falls under the current-limiting subcategory, designed to restrict the let-through energy during a short circuit fault.
What frame group does the XM433450 belong to?
It is part of the Federal Pacific X Frames family of legacy molded case circuit breakers.
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