Designed for applications requiring remote shutdown capabilities, this 225A thermal-magnetic breaker incorporates a factory-installed 120VAC shunt trip mechanism. The J-Frame device mounts into Square D I-Line panelboards and switchboards, providing a seamless upgrade path for older KA36225 installations. Delivering 25kAIC at 240V, the current-limiting design includes fixed thermal and adjustable magnetic trip settings alongside the signature Visi-Trip visual indicator.
What does the SA suffix mean in the JDA36225SA catalog number?
The SA suffix indicates that this circuit breaker is equipped with a factory-installed 120VAC (110-130VAC) shunt trip. This accessory allows the breaker to be tripped remotely via a control voltage signal.
How does the I-Line connection on the JDA36225SA install into a panel?
The I-Line plug-in design allows the breaker to mount directly onto the busbar stack of Square D I-Line panelboards and switchboards. This plug-on connection eliminates the need for individual cable connections or bolt-on hardware at the bus.
Are the trip settings on the JDA36225SA adjustable?
Yes, while the thermal (long-time) overload protection is fixed at 225 amps, the magnetic (instantaneous) short-circuit trip point is adjustable. This allows electricians to fine-tune the breaker for different inrush currents and coordination requirements.
What wire sizes are compatible with the standard lugs on this breaker?
The factory-installed lugs accept either copper or aluminum conductors ranging from 3/0 AWG to 350 kcmil. Always verify that the wire bending space in your enclosure can accommodate the selected conductor size.
Can the JDA36225SA be used in direct current (DC) systems?
Yes, this thermal-magnetic breaker is rated for use in DC applications up to 250VDC, providing a 20kAIC interrupting rating at that voltage. It is suitable for various industrial DC control and distribution systems.
What type of protection does the LI trip unit provide?
The LI designation indicates that the thermal-magnetic trip unit includes Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for immediate tripping during short circuits. This is the standard protection scheme for most general-purpose distribution applications.
Is the JDA36225SA compatible with standard Square D NQ or NF panelboards?
No, this breaker features an I-Line plug-in mounting style. It is exclusively compatible with Square D I-Line panelboards and switchboards, and cannot be installed in standard NQ or NF panels.
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