Built for heavy-duty commercial applications, the Square D NAL361000 is a 3-pole, 1000A molded case circuit breaker featuring thermal-magnetic LI trip functions. This legacy N-Frame device utilizes a unit mount configuration with line and load lugs, making it ideal for Square D enclosures and switchboards. Delivering 50kAIC at 480VAC, it includes an adjustable magnetic trip and is HACR rated. Facilities looking to upgrade can replace this unit with the modern PowerPact P-Frame PJL36100.
What equipment is the NAL361000 designed to be installed in?
This N-Frame breaker is designed for installation in Square D N-Frame enclosures and compatible switchboards. It is a unit-mount breaker and will not fit in I-Line plug-on panelboards.
What are the wire size requirements for the NAL361000 lugs?
The factory lugs accommodate four conductors per phase, accepting either aluminum or copper wire sizes from 3/0 AWG up to 600 kcmil.
How does the thermal-magnetic trip unit operate on the NAL361000?
The trip unit provides standard LI (Long-Time and Instantaneous) protection. The thermal element for overload protection is fixed, while the magnetic element for short-circuit protection is adjustable.
How are the line and load connections made on the NAL361000?
This is a feed-thru circuit breaker equipped with mechanical lugs on both the line and load sides for direct wire connections.
Is the NAL361000 still manufactured by Square D?
No, the N-Frame series is a legacy molded case circuit breaker family and is no longer in active production by Schneider Electric.
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