Eaton / Cutler-Hammer FPS3150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer FPS3150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for definite purpose applications, the Eaton FPS3150 delivers 150 amps of thermal-magnetic protection. It is ideal for commercial facilities utilizing specialized HVAC equipment or heavy-duty control panels. The unit mount configuration makes it compatible with Eaton PRL3a panelboards and legacy Westinghouse F-Frame enclosures. For modern upgrades, the FD3150 serves as a drop-in substitute.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | FPS |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | FD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Definite Purpose Control Panels, HVAC Equipment, Eaton PRL3a Panelboards |
| Wire Gauge | 4 AWG-4/0 AWG |
| Max Wire | 4/0 AWG |
| Min Wire | 4 AWG |
| 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included, Mounting Hardware |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Definite Purpose, HACR Rated |
Product FAQs
6 answersWhat does the LI trip function indicate on the FPS3150?
The LI designation means this thermal-magnetic breaker provides fixed Long-Time (L) and fixed Instantaneous (I) protection. The long-time function protects against sustained overloads, while the instantaneous function trips the breaker immediately during severe short circuits.
What types of panels and equipment is the FPS3150 compatible with?
This definite purpose breaker is designed for use in Eaton PRL3a panelboards, commercial HVAC equipment, and definite purpose control panels.
Can the Eaton FPS3150 be reverse fed?
Yes. Eaton F-Frame thermal-magnetic circuit breakers, including the FPS3150, are suitable for reverse feed applications. Always verify that no voltage is present before installation.
What wire sizes do the standard lugs on the FPS3150 accept?
The factory-installed lugs on this 150A breaker accommodate wire gauges ranging from 4 AWG to 4/0 AWG. Ensure your conductors fall within this range when planning your conduit and wiring layout.
Can the FPS3150 replace older Westinghouse breakers?
Yes. Because it shares the standard Westinghouse F-Frame footprint, the FPS3150 can often be used to replace legacy Westinghouse breakers that have matching dimensions and electrical specifications.
How is the FPS3150 secured during installation?
This is a unit mount, bolt-on circuit breaker. It fastens directly to the panel bus or mounting hardware using bolts, providing a secure and reliable connection for industrial control panels and HVAC equipment.
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