Square D HJL36100U33X PowerPact Molded Case Circuit Breaker | 100A 3-Pole 600V Feed-Thru
Square D HJL36100U33X PowerPact Molded Case Circuit Breaker | 100A 3-Pole 600V Feed-Thru
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Square D HJL36100U33X – PowerPact H-Frame Molded Case Circuit Breaker
The Square D HJL36100U33X (also known as the Schneider Electric HJL36100U33X) is a high-performance, current-limiting, solid-state molded case circuit breaker from the PowerPact H-Frame series. Engineered for demanding industrial and commercial power distribution systems, this breaker delivers reliable overcurrent protection at 100 Amps, 3 Poles, and up to 600 Volts AC — with a feed-thru mounting configuration for flexible panel integration.
Equipped with the Micrologic 3.2S electronic trip unit (LSI — Long-Time, Short-Time, and Instantaneous), this circuit breaker offers advanced, adjustable protection well beyond what standard thermal-magnetic breakers can provide. It is UL 489 Listed and suitable for reverse-fed applications, making it one of the most versatile options in its class.
Key Specifications
| Part Number / SKU | HJL36100U33X |
| Manufacturer | Square D / Schneider Electric |
| Series | PowerPact H-Frame |
| Amperage Rating | 100A |
| Number of Poles | 3-Pole (3P) |
| Voltage Rating | 600V AC |
| Interrupting Rating | 100kA @ 240VAC / 65kA @ 480VAC / 25kA @ 600VAC |
| Frame Type | H-Frame |
| Mounting Type | Feed-Thru / Unit Mount |
| Trip Type | Solid-State Electronic (Micrologic 3.2S) |
| Trip Functions | LSI – Long-Time, Short-Time, Instantaneous |
| Phase | 3-Phase (3PH) |
| Current Limiting | Yes |
| Reverse Fed Suitable | Yes |
| 2-Pole Compatible | Yes |
| Terminals | Line & Load Side Lug Terminals |
| Listings / Certifications | UL 489 Listed |
| Interrupt Rating Class | J (High Interrupting) |
| Condition | New |
What Is the Square D HJL36100U33X?
The HJL36100U33X is a current-limiting, solid-state molded case circuit breaker (MCCB) designed for three-phase industrial power distribution panels, switchboards, and motor control centers (MCCs). The "HJL" designation indicates it belongs to the PowerPact H-Frame family with a J-rated (high) interrupting capacity — a critical feature in facilities with high available fault current.
Unlike thermal-magnetic breakers, the Micrologic 3.2S electronic trip unit provides precise, adjustable protection curves for long-time delay, short-time delay, and instantaneous tripping — giving engineers and electricians far greater control over coordination in complex distribution systems.
Why Choose the HJL36100U33X?
- High Interrupting Capacity: Rated up to 100kA at 240VAC — handles extreme fault currents without failure.
- Current Limiting Technology: Reduces let-through energy, protecting downstream equipment from damage during faults.
- Advanced Electronic Trip: Micrologic 3.2S with LSI functions allows precise coordination in tiered distribution systems.
- Feed-Thru / Unit Mount: Flexible installation for use in panelboards and switchboards.
- Reverse-Fed Capable: Can be connected with line and load reversed — ideal for complex system designs.
- 2-Pole Compatible: Can be applied in 2-pole configurations for added versatility.
- UL 489 Listed: Meets rigorous North American safety and performance standards.
Common Applications
- Industrial power distribution panels and switchboards
- Motor control centers (MCCs)
- Commercial and industrial buildings with 480V or 600V systems
- Manufacturing facilities requiring high fault current protection
- Data centers and critical infrastructure
- Replacement and retrofit applications for Square D PowerPact H-Frame systems
Frequently Asked Questions (FAQ)
What does "feed-thru" mean on the HJL36100U33X?
Feed-thru (also written as "feed through") refers to the mounting and wiring configuration where both line-side and load-side lug terminals are accessible, allowing conductors to pass through for daisy-chain or multi-breaker panel wiring. This is distinct from plug-in style breakers designed for specific bus configurations.
Is the HJL36100U33X the same as the Schneider Electric HJL36100U33X?
Yes. Square D is a brand of Schneider Electric. The HJL36100U33X is manufactured and marketed under both the Square D and Schneider Electric names. The product is identical.
What is the interrupting rating of the HJL36100U33X?
The interrupting rating is 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC — classified as a J-rated (high interrupting) circuit breaker.
What trip unit does the HJL36100U33X use?
It uses the Micrologic 3.2S electronic trip unit, which provides LSI protection: Long-Time delay, Short-Time delay, and Instantaneous trip functions. The trip unit is non-interchangeable (fixed to this breaker frame).
Can the HJL36100U33X be used in reverse-fed applications?
Yes. The HJL36100U33X is listed as suitable for reverse-fed (back-fed) applications, meaning the load side can be used as the line side when required by the installation design.
What is the difference between HJL, HJA, and HDL Square D breakers?
All three are PowerPact H-Frame breakers at 100A/600V, but differ in mounting and interrupting styles. The HJL uses unit/feed-thru mounting with J-rated interrupting capacity. The HJA uses I-Line plug-in mounting. The HDL uses I-Line mounting with a standard (D-rated) interrupting capacity.
Is this breaker in stock and ready to ship?
Yes. Alpha Brokers & Controls stocks the HJL36100U33X in new condition and ships promptly. Contact us for lead time and volume pricing.