Square D HDF36020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Quantity
Square D HDF36020 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for industrial control panels and motor control centers, this 20-amp PowerPacT breaker offers fixed thermal and magnetic (LI) protection. It serves as a modern replacement for discontinued FA36020 and FH36020 models, mounting via standard busbar connections. Delivering 18 kAIC interrupting capacity at 480VAC, the compact H-Frame design includes a Visi-Trip indicator for rapid fault identification.Specifications
| Brand | Square D |
|---|---|
| Series | HDF |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | HDF |
|---|---|
| Terminal Type | Busbar Connection |
| For Use With | Square D Switchboards, Industrial Control Panels, Motor Control Centers |
| Wire Gauge | 14-3/0 AWG (Al/Cu) |
| Max Wire | 3/0 AWG, Cu/Al |
| Min Wire | 14 AWG, Cu/Al |
| 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, Motor Operator, Rotary Handle, Lug Kits, Terminal Shields, Padlock Attachment |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NEMA, NOM, UL, HACR |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, RoHS Compliant, Mercury Free, PVC Free |
Product FAQs
8 answersHow is the HDF36020 circuit breaker mounted and connected?
The HDF36020 is a unit-mount circuit breaker. The F-suffix in the catalog number indicates it is designed for direct busbar connections on both the line and load sides. It does not include mechanical lugs by default, so compatible lugs must be purchased separately if you need to terminate cables.
What is the difference between the HDF36020 and HDA36020?
Both are 20A, 3-pole, D-interrupting class PowerPacT H-frame breakers. The HDF36020 is a unit-mount breaker with busbar connections, while the HDA36020 features an I-Line plug-in connection for use in Square D I-Line panelboards.
What does the D in the HDF36020 catalog number signify?
The D indicates the interrupting rating class of the PowerPacT H-frame breaker. It provides a standard breaking capacity of 14 kA at 600VAC, 18 kA at 480VAC, and 25 kA at 240VAC.
Is the HDF36020 rated for 80% or 100% continuous current?
The standard HDF36020 is an 80% rated circuit breaker. For applications requiring a 100% continuous current rating, a different catalog number is required.
What equipment is the HDF36020 designed to protect?
This 20A H-frame breaker is commonly installed in Square D switchboards, industrial control panels, and motor control centers to protect electrical systems from overloads and short circuits.
What type of trip unit does the HDF36020 use?
It features a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) protection functions. The thermal and magnetic trip points are factory-set and non-adjustable.
Does the HDF36020 include a push-to-trip feature?
Yes, it includes an integral push-to-trip button on the cover, allowing you to manually trip the breaker to verify the mechanical operation of the trip mechanism.
Can the HDF36020 replace older Square D F-frame breakers?
Yes, the PowerPacT H-frame series is the modern replacement for legacy Square D F-frame breakers, such as the FAL and FHL series. However, because mounting dimensions and accessories differ, panel modifications may be required.
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