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The HJA36020 Square D 3P 20A 600V 25KA I-Line circuit breaker is designed for reliable protection in industrial applications. Featuring a three-pole design, it supports a maximum voltage of 600V and a short-circuit current rating of 25KA. Ideal for critical circuit protection, it ensures operational safety and efficiency.
The HJA36020 uses Square D's I-Line plug-in mounting system. It is designed for Square D I-Line panelboards and switchboards that accept HJA-frame breakers. It is a commercial/industrial device and is not compatible with residential QO or Homeline loadcentres. Contact us with your panelboard model and we'll verify the fit.
Availability of specific Square D HJA-frame breakers can vary. Northern Breaker Group specializes in sourcing obsolete and hard-to-find breakers across Canada. Whether new, surplus, or reconditioned stock is needed, reach out to our Calgary, Edmonton, or Vancouver counters for a quote and availability check.
Yes — the HJA36020 is rated for 600 V AC, making it suitable for Canada's standard 347/600 V wye three-phase distribution systems used in commercial and industrial facilities. Its 25 kA interrupting rating must be verified against the available fault current at the point of installation to ensure code-compliant protection.
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