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Square D FI36020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FI36020
Molded Case Circuit Breaker
Brand
Square D
SKU
FI36020
Quantity
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Square D FI36020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D FI36020 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FI36020 |
| Series | FI |
| Amperage | 20A |
| 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 FI36020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FI36020-R |
| Series | FI |
| Amperage | 20A |
| 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 |
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Description
Designed to restrict let-through energy, the Square D FI36020 is a 3-pole, 20A molded case circuit breaker. It employs a thermal-magnetic trip mechanism with fixed long-time and instantaneous functions to secure commercial electrical systems. This legacy F-Frame device is built exclusively for Square D I-Line panelboards and switchboards. When modernizing equipment, this breaker is officially replaced by the PowerPact HRA36020. Rated at 200kAIC at 480VAC, it ensures robust fault clearance.Specifications
| Brand | Square D |
|---|---|
| Part Number | FI36020-R |
| Series | FI |
| Amperage | 20A |
| 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
9 answersWhat type of panelboards are compatible with the FI36020 circuit breaker?
This breaker is designed exclusively for use in commercial Square D I-Line panelboards and switchboards. It will not fit standard residential load centers.
Is the Square D FI36020 still in active production?
The FI36020 is a legacy F-Frame molded case circuit breaker. When modernizing equipment, it is officially replaced by the PowerPact HRA36020.
What does the FI designation indicate about this breaker's performance?
The FI frame indicates it is a current-limiting circuit breaker designed to restrict let-through energy during a fault. It features an extremely high interrupting capacity of up to 200kA at 480VAC.
What wire sizes and materials are accepted by the lugs on the FI36020?
The included load-side lugs accept wire gauges from 14 AWG up to 1/0 AWG. They are rated for both copper (Cu) and aluminum (Al) conductors.
How does the FI36020 connect to the panel busbar?
It utilizes an I-Line style plug-in connection. The breaker jaws clamp directly onto the panelboard bus stack, allowing for rapid and secure phase connections without individual bus wiring.
What type of trip unit is equipped on this breaker?
It features a thermal magnetic trip mechanism with fixed long-time and instantaneous (LI) trip functions to protect against overloads and short circuits.
Can I use the FI36020 in a standard QO or Homeline load center?
No. This breaker requires an I-Line plug-in connection and will only fit commercial Square D I-Line panelboards and switchboards.
Is the FI36020 rated for DC applications?
Yes, in addition to its AC ratings, this breaker is rated for 10kA at 250VDC, making it suitable for specific direct current applications.
What safety precautions should be taken before installing an I-Line breaker like the FI36020?
Ensure the panelboard is fully de-energized, verify the busbar is clean and free of debris, and always wear appropriate Personal Protective Equipment (PPE) as required by NFPA 70E.
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