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Square D IF36020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
IF36020
Molded Case Circuit Breaker
Brand
Square D
SKU
IF36020
Quantity
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Square D IF36020 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Designed to restrict let-through energy, the IF36020 is a 20A, 3-pole current-limiting circuit breaker suitable for commercial and industrial facilities. It provides robust thermal-magnetic protection for critical electrical systems. This unit installs into Square D I-Line panelboards using a secure plug-on connection. For facility upgrades, this specific IF-frame breaker is replaced by the HRA36020. It boasts an impressive 100kAIC interrupt capacity at 600VAC, ensuring superior safety.Specifications
| Brand | Square D |
|---|---|
| Part Number | IF36020-R |
| Series | IF |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu), 12-4 AWG (Al) |
| Max Wire | 4 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Common Trip, Trip-Free Mechanism |
| Special Features | Current Limiting |
Product FAQs
8 answersWhat type of panelboards are compatible with the IF36020 circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It utilizes an I-Line plug-on connection for the line side and mechanical lugs for the load side.
What does it mean that the IF36020 is an I-Limiter circuit breaker?
The I-Limiter designation indicates that this is a current-limiting breaker. It is engineered to restrict the peak let-through current and energy during a short circuit, providing enhanced protection for downstream electrical equipment.
Is there a modern replacement for the IF36020 for facility upgrades?
Yes, for modern facility upgrades, the legacy IF series IF36020 is typically replaced by the PowerPact H-frame HRA36020, which offers similar I-Line mounting and high interrupting capacities.
How is the IF36020 mounted inside the panel?
It features an I-Line style plug-on mounting system. The line side of the breaker snaps directly onto the I-Line bus assembly, while the load side uses traditional mechanical lugs for wire termination.
Why would an application require the 200kAIC rating of the IF36020?
A 200kAIC rating at 480VAC is required in commercial and industrial environments where the available fault current from the utility or local transformers is extremely high. This ensures the breaker can safely interrupt massive short circuits without sustaining catastrophic damage.
What type of wire can be terminated on the IF36020 load lugs?
The factory-installed lugs are dual-rated for both copper (14 to 4 AWG) and aluminum (12 to 4 AWG) conductors. Always apply an approved oxide inhibitor when terminating aluminum wiring to prevent corrosion.
Does the IF36020 offer adjustable trip settings?
No, this breaker uses a fixed thermal-magnetic trip unit. Both the Long-Time (overload) and Instantaneous (short-circuit) trip functions are factory-set and cannot be adjusted in the field.
How does the current-limiting feature of the IF36020 improve system safety?
By clearing high-magnitude short circuits in a fraction of a cycle, a current-limiting breaker significantly reduces the let-through thermal and magnetic energy. This minimizes the risk of damage to downstream wiring, components, and enclosures during a severe fault.
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