FH36020 SQUARE D 3P 20A 600V I LINE
The FH36020 Square D 3P 20A 600V I-Line is a reliable and efficient circuit breaker designed for three-phase systems. With a sturdy build and a capacity of 20 amps, it ensures optimal protection for electrical loads at voltages up to 600V. Ideal for both industrial and residential applications.
The FH36020 uses Square D's I-Line plug-in bus system, which is compatible with Square D I-Line panelboards and switchboards (such as NF and NQ series). It is not interchangeable with QO or Homeline residential loadcentres. Send us your panelboard model and we'll confirm compatibility.
The FH-frame I-Line series has been superseded by newer Square D MCCB lines in many applications. Northern Breaker Group specialises in obsolete and hard-to-find breakers, so we can often source the FH36020 new, reconditioned, or surplus. Contact us or visit one of our Calgary, Edmonton, or Vancouver counters for current availability.
No — you should never replace a breaker with one of a lower interrupting rating than what the system's available fault current requires. The FH36020 is rated 18kA at 600V. If your system's available short-circuit current exceeds 18kA, you'll need a higher-rated frame. We recommend consulting your panel schedule or a licensed electrician, and we're happy to help identify the correct replacement.
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