A robust solution for commercial facilities, the Square D LX36600G is a 600A, 3-pole molded case circuit breaker. It delivers advanced solid-state protection for complex electrical distribution systems. This legacy breaker installs into Square D I-Line panelboards and switchboards. When upgrading, it is replaced by the PowerPact LJA36600U44X, which requires an HNM1BL filler plate to accommodate the modern frame size.
Load Side Lugs Included, Line Side Panel Connectors
Standards
CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489
Approval
CE, CSA, IEC, NOM, UL
Temp Rating
40C
Product FAQs
6 answers
What is the modern replacement for the legacy Square D LX36600G circuit breaker?
The LX36600G is a legacy L-frame breaker. Its direct modern replacement is the Square D PowerPact LJA36600U44X. When upgrading to the PowerPact model in an existing I-Line panelboard, you will also need an HNM1BL filler plate to accommodate the newer frame size.
What specific protection does the G suffix in the LX36600G catalog number indicate?
The G indicates that the Micrologic electronic trip unit includes Ground Fault protection. This breaker features a complete LSIG trip profile, providing adjustable Long-Time, Short-Time, Instantaneous, and Ground Fault protection.
What type of wire connections are required for the load side of the LX36600G?
The load side is equipped with mechanical lugs that accept two conductors per phase. You can use either aluminum or copper wire ranging from 4/0 AWG to 500 kcmil.
How does the LX36600G connect to the panelboard bus?
It features an I-Line plug-in connection on the line side. The breaker jaws push directly onto the I-Line bus stack, eliminating the need for line-side wire terminations or bolted bus connections.
Can the trip settings on the LX36600G be customized for system coordination?
Yes, the solid-state Micrologic trip unit is adjustable. Electricians can modify the LSIG parameters to ensure proper selective coordination with downstream devices in the electrical distribution system.
Does the LX36600G provide equipment ground fault protection or personnel ground fault protection?
The LSIG trip unit provides equipment ground fault protection designed to protect the electrical system and machinery from damaging low-level faults. It is not a Class A GFCI device intended for personnel protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.