The Square D HJA36020 is a PowerPacT H-frame molded case circuit breaker engineered for reliable low-voltage electrical distribution. This 3-pole device delivers a 20A continuous current rating at 80% and features a thermal-magnetic trip unit with a magnetic hold current of 350A and a magnetic tripping current of 750A. Operating at up to 600V AC, it provides an interrupting capacity of 100kA at 240V AC, 65kA at 480V AC, and 25kA at 600V AC, making it suitable for demanding commercial and industrial environments. The breaker is designed with an I-Line bracket for plug-in mounting and includes dual-break rotating contacts that limit short-circuit currents. It accommodates 14 AWG to 3/0 AWG aluminum or copper wiring. Prior to procurement, please confirm panel compatibility, condition, source, availability, and lead time in the written quote.
Application context: PowerPacT H-frame circuit breakers are used for distribution in low-voltage applications. They are designed for I-Line panelboards and are suitable for reverse-fed applications or corner-grounded delta systems.
Primary technical source for HJA36020 | Supporting documentation
The Square D HJA36020 is a PowerPacT H-frame molded case circuit breaker engineered for reliable low-voltage electrical distribution. This 3-pole device delivers a 20A continuous current rating at 80% and features a thermal-magnetic trip unit with a magnetic hold current of 350A and a magnetic tripping current of 750A. Operating at up to 600V AC, it provides an interrupting capacity of 100kA at 240V AC, 65kA at 480V AC, and 25kA at 600V AC, making it suitable for demanding commercial and industrial environments. The breaker is designed with an I-Line bracket for plug-in mounting and includes dual-break rotating contacts that limit short-circuit currents. It accommodates 14 AWG to 3/0 AWG aluminum or copper wiring. Prior to procurement, please confirm panel compatibility, condition, source, availability, and lead time in the written quote.
| Specification | Value |
|---|---|
| Amperage | 20A |
| Poles | 3 |
| Voltage | 600VAC |
| Interrupting Rating | 100kA at 240VAC / 65kA at 480VAC / 25kA at 600VAC |
| Trip Unit | Thermal-magnetic |
| Mounting | I-Line |
| Continuous Current Rating | 80% |
| Phase Connection | ABC |
| Magnetic Tripping Current | 750A |
| Magnetic Hold Current | 350A |
PowerPacT H-frame circuit breakers are used for distribution in low-voltage applications. They are designed for I-Line panelboards and are suitable for reverse-fed applications or corner-grounded delta systems. Match the physical nameplate, panel label, mounting method, electrical ratings, and manufacturer instructions before purchase or installation.
Square D HJA36020 catalog record. Call (951) 903-9804 to request a written quote confirming the nameplate, ratings, mounting, condition, source, availability, lead time, shipping method, warranty, and compatibility requirements.
Brand: Square D | Catalog Number: HJA36020 | Series: PowerPact H-Frame