The Square D HJA36020 is a 20-amp, 3-pole, 600V molded case circuit breaker from the PowerPact H-Frame series. It features thermal-magnetic trip technology providing long-time (L) and instantaneous (I) protection. Designed for I-Line plug-in mounting into Square D I-Line panelboards and switchboards, this breaker is HACR-rated, 80% rated, and carries UL 489 listing. It replaces the legacy FA36020, FC36020, and FH36020 models, making it an ideal upgrade for aging electrical systems. The HJA36020 is widely used in commercial buildings, industrial facilities, and data centers where reliable branch circuit protection is required.
| Specification | Value |
|---|---|
| Amperage | 20A |
| Poles | 3 |
| Voltage | 240/480/600VAC, 250VDC |
| Interrupt Rating | 100kA @ 240V · 65kA @ 480V · 25kA @ 600V |
| Frame Size | H-Frame (150A Frame) |
| Mounting Type | I-Line Plug-In |
| Trip Type | Thermal Magnetic |
| Trip Function | LI — Long-Time, Instantaneous |
| Wire Size | 14–3/0 AWG (Al/Cu) |
| Phase | 3-Phase |
| Standards | UL 489, CSA C22.2 No.5, IEC 60947-2, NEMA AB 1 |
| Temperature Rating | -25°C to 70°C |
Replaces: FA36020, FC36020, FH36020, FY36020
Square D PowerPact H-Frame 20A 3-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.
Brand: Square D | Series: PowerPact H-Frame | Catalog Number: HJA36020
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