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Square D FI36025 Molded Case Circuit Breaker
- 25A
- 3 Pole
- I-Line
Square D
FI36025
Molded Case Circuit Breaker
Brand
Square D
SKU
FI36025
Quantity
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Square D FI36025 - 25A 3 Pole Molded Case Circuit Breaker
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Description
A reliable choice for industrial facilities, the Square D FI36025 is a 3-pole, 25A current-limiting MCCB. It belongs to the legacy F-Frame series, offering robust protection. Featuring an I-Line mounting style, it installs securely into Square D I-Line panelboards and switchboards. It is superseded by the modern HRA36025U31X. Capable of interrupting 200kA at 480V, its current-limiting design reduces let-through energy during faults. A Visi-Trip indicator aids troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Part Number | FI36025-R |
| Series | FI |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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 |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489, W-C-375B/GEN |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Visual Trip Indicator |
| Special Features | Current Limiting |
Product FAQs
6 answersWhat type of panelboard is required for the FI36025?
This breaker features an I-Line mounting style and is designed exclusively for use in Square D I-Line panelboards and switchboards.
How are the line and load connections configured on this breaker?
The line side utilizes a plug-on I-Line connection that attaches directly to the panelboard bus. The load side features mechanical lugs that accept 14 AWG to 1/0 AWG copper or aluminum wire.
What does the current limiting feature of the FI36025 do?
As a current limiting circuit breaker, it is designed to clear a fault in less than half a cycle. This rapid action significantly reduces the peak let-through current and energy, providing enhanced protection for downstream electrical components.
Is the FI36025 a current production model?
The FI frame is classified as a legacy molded case circuit breaker by Square D. It serves as a direct replacement for existing FI frame I-Line breakers without requiring panel modifications.
Can this breaker be used in direct current applications?
Yes, the FI36025 is rated for DC applications up to 250VDC, providing a maximum interrupting capacity of 10kA at that voltage.
What safety precautions apply when installing this I-Line breaker?
Always ensure the panelboard is fully de-energized before attempting to install or remove the breaker. Verify that the bus connections are clean and free of debris to ensure a proper, low resistance plug-on connection.
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