Providing high-capacity protection, the Square D JDP36225 is a 3-pole, 225A MCCB from the PowerPacT J-Frame series. It safeguards commercial and industrial electrical networks. This unit mount breaker is designed for Square D NF panelboards and switchboards. It provides an exact cross-reference for replacing legacy JD36225 components. The breaker features a thermal-magnetic trip unit with adjustable magnetic settings. It offers an 18 kAIC rating at 480VAC and a Visi-Trip indicator.
What equipment is compatible with the JDP36225 circuit breaker?
This unit-mount PowerPacT J-Frame breaker is designed for installation in Square D NF panelboards, standard switchboards, and custom industrial control panels.
Can the JDP36225 be reverse fed?
Yes, this standard thermal-magnetic PowerPacT circuit breaker is suitable for reverse-fed applications, meaning the supply power can be connected to the bottom load-side terminals if required by the panel layout.
Is the magnetic trip range adjustable on this breaker?
Yes. While the 225A thermal long-time function is fixed, the instantaneous magnetic trip function is adjustable between 1125A and 2250A to allow for selective coordination.
Is this circuit breaker rated for 100 percent continuous duty?
No, the JDP36225 carries a standard 80 percent continuous current rating. For continuous loads lasting three hours or more, the maximum draw must not exceed 180 amps.
How is the JDP36225 mounted and wired?
This is a unit-mount breaker that bolts directly to a backpan or mounting plate rather than clipping onto a busbar. It includes mechanical lugs on both the line and load sides that accept one 3/0 AWG to 350 kcmil aluminum or copper conductor per phase.
How can I manually test the tripping mechanism?
The front cover features a molded push-to-trip button. Pressing this button manually actuates the tripping linkage, allowing you to safely verify the mechanical operation of the breaker without a live fault.
What type of contact mechanism does the JDP36225 use?
Like all PowerPacT J-Frame breakers, it utilizes dual-break rotating contacts. This design helps reduce the amount of peak current let-through during a short-circuit fault, limiting potential damage to downstream equipment.
What safety certifications does this breaker meet?
The JDP36225 is UL 489 Listed for overcurrent protection. It also complies with CSA, NOM, and IEC standards, and carries CE and UKCA marks for global industrial control panel applications.
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