Square D HJA260201 Molded Case Circuit Breaker | 20A 2-Pole 600V I-Line Plug-In
Square D HJA260201 Molded Case Circuit Breaker | 20A 2-Pole 600V I-Line Plug-In
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Square D HJA260201 — 20A 2-Pole 600V I-Line Molded Case Circuit Breaker
The Square D HJA260201 is a heavy-duty thermal magnetic molded case circuit breaker (MCCB) engineered for industrial power distribution panels. Rated at 20 Amps, 2 Poles, and 600 Volts, this breaker features an I-Line style plug-in connection for fast, tool-free installation into Square D I-Line panelboards — minimizing downtime and simplifying panel upgrades.
Manufactured by Schneider Electric / Square D, the HJA260201 is built to deliver reliable overcurrent and short-circuit protection in demanding commercial and industrial environments.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | HJA260201 |
| Brand | Square D (Schneider Electric) |
| Breaker Type | Molded Case Circuit Breaker (MCCB) |
| Trip Type | Thermal Magnetic |
| Current Rating | 20 Amps |
| Number of Poles | 2 Pole |
| Voltage Rating | 600V AC / 250V DC |
| Connection Type | I-Line Style Plug-In |
| Trip Functions | LI — Long Time & Instantaneous |
| Interrupting Rating @ 240V AC | 100 kA |
| Interrupting Rating @ 480V AC | 65 kA |
| Interrupting Rating @ 600V AC | 25 kA |
| Interrupting Rating @ 250V DC | 20 kA |
| Series | HJA |
Features & Benefits
- I-Line Plug-In Design: Installs quickly and securely into Square D I-Line panelboards without additional hardware — ideal for retrofits and panel expansions.
- Thermal Magnetic Trip: Provides dual-level protection — thermal element guards against sustained overloads, while the magnetic element responds instantly to short circuits.
- High Interrupting Capacity: Rated up to 100kA at 240V AC, suitable for high-fault-current industrial environments.
- LI Trip Functions: Long time (thermal) and instantaneous (magnetic) tripping ensures precise, coordinated protection.
- Wide Voltage Range: Compatible with systems up to 600V AC and 250V DC.
- Industrial-Grade Construction: Built to UL 489 standards for robust performance in demanding applications.
Typical Applications
- Commercial and industrial power distribution panels
- Manufacturing facilities and process equipment
- HVAC systems and motor branch circuits
- Data centers and critical infrastructure
- Square D I-Line panelboard retrofits and upgrades
Compatibility
The HJA260201 is designed for use with Square D I-Line style panelboards and switchboards. Always verify panelboard compatibility and consult Schneider Electric documentation before installation. For system coordination studies or sizing support, consult a licensed electrical engineer.
Frequently Asked Questions
What is the Square D HJA260201?
The HJA260201 is a 20-amp, 2-pole, 600V thermal magnetic molded case circuit breaker (MCCB) from Square D (Schneider Electric). It uses an I-Line plug-in connection style for compatibility with Square D I-Line panelboards.
What does I-Line plug-in mean on a circuit breaker?
I-Line is a Square D proprietary bus connection system that allows circuit breakers to plug directly into the panelboard bus bar without separate lugs or connectors, enabling faster installation and replacement.
What is the interrupting rating of the HJA260201?
The HJA260201 has an interrupting rating of 100kA at 240V AC, 65kA at 480V AC, 25kA at 600V AC, and 20kA at 250V DC.
What trip functions does the HJA260201 have?
It features LI (Long Time and Instantaneous) trip functions — providing thermal protection against overloads and magnetic protection against short-circuit faults.
Is the HJA260201 UL listed?
Yes, Square D molded case circuit breakers in the HJA series are built to UL 489 standards for molded case circuit breakers.