Built for demanding electrical systems, the Square D JDM36225 is a 225A, 3-pole PowerPacT molded case circuit breaker. It utilizes thermal-magnetic trip technology to provide essential long-time and instantaneous (LI) protection. Designed as a unit mount breaker, it installs easily into motor control centers, switchboards, and standalone enclosures. The lugs accommodate 3/0 AWG to 350 kcmil conductors.
What enclosures or panels is the JDM36225 compatible with?
As a unit mount PowerPacT J-frame breaker, it is designed for installation in industrial control panels, switchboards, motor control centers, and standalone unit mount enclosures. It is not compatible with Square D I-Line panelboards, which require the I-Line specific JDA36225 plug-on variant.
What type of terminations are included on the JDM36225?
The M in the catalog number indicates this breaker comes with standard mechanical lugs on the line side and terminal nuts on the load side. If you require lugs on both the line and load sides, you would need the JDL36225 variant.
Can the JDM36225 circuit breaker be reverse fed?
Yes. Standard unit mount PowerPacT J-frame thermal magnetic circuit breakers feature factory sealed trip units and are UL listed as suitable for reverse fed applications.
What is the recommended tightening torque for the standard lugs on this breaker?
The standard AL250JD line side lugs, which accept 3/0 AWG to 350 kcmil aluminum or copper wire, require a tightening torque of 225 lb-in. Always verify torque specifications on the physical breaker label before finalizing connections.
What does the D in the JDM36225 catalog number signify?
The D indicates the specific interrupting rating tier of the breaker. For the PowerPacT J-frame series, the D-rating provides 25 kA at 240VAC, 18 kA at 480VAC, and 14 kA at 600VAC.
Does this breaker include a manual testing feature?
Yes, all PowerPacT J-frame circuit breakers are equipped with an integral push-to-trip button on the front cover. This allows electricians to manually trip the breaker to verify the mechanical operation of the trip mechanism.
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