Square D FI36050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- I-Line
Quantity
Square D FI36050 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D FI36050 - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FI36050 |
| Series | FI |
| Amperage | 50A |
| 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 |
| Frame Type | FI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| 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, Common Trip, Trip-Free Mechanism |
| Special Features | Current Limiting |
Quantity
Square D FI36050 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FI36050-R |
| Series | FI |
| Amperage | 50A |
| 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 |
| Frame Type | FI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| 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, Common Trip, Trip-Free Mechanism |
| Special Features | Current Limiting |
Description
Built for commercial and industrial power distribution, the Square D FI36050 is a 50-amp, 3-pole current-limiting MCCB. Designed specifically for Square D I-Line panelboards and switchboards, this F-Frame breaker utilizes a secure plug-on mounting style. For new installations or upgrades, it has been replaced by the HRA36050 model. The current-limiting design significantly reduces let-through energy during short circuits, protecting downstream components from thermal and magnetic stress.Specifications
| Brand | Square D |
|---|---|
| Part Number | FI36050-R |
| Series | FI |
| Amperage | 50A |
| 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 |
| Frame Type | FI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| 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, Common Trip, Trip-Free Mechanism |
| Special Features | Current Limiting |
Product FAQs
6 answersWhich panelboards are compatible with the FI36050 breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes the I-Line plug-in mounting system, which allows for quick installation directly onto the panel bus assembly.
Can I use this F-frame breaker in a standard QO or Homeline load center?
No, the FI36050 is an I-Line molded case circuit breaker. It will not fit in residential QO or Homeline load centers, which require miniature plug-on breakers. It is strictly for industrial and commercial I-Line distribution equipment.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory-installed lugs accept wire gauges from 14 AWG up to 1/0 AWG. They are dual-rated for both copper (Cu) and aluminum (Al) conductors.
Are the trip settings adjustable on the FI36050?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time (L) and instantaneous (I) protection parameters are factory set and cannot be modified in the field.
What does the current limiting designation mean for the FI frame?
Current limiting breakers like the FI36050 are designed to clear a fault in less than half a cycle. This rapid response significantly reduces the let-through energy and peak current, protecting downstream equipment from severe electrical and mechanical stress during a short circuit.
Is the FI36050 suitable for direct current (DC) applications?
Yes, this breaker is rated for use in DC circuits up to 250VDC, providing an interrupting capacity of 10kA at that voltage.
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