Engineered for industrial applications, the Square D LHL36225 is a 3-pole, 225A molded case circuit breaker offering thermal-magnetic LI protection. This unit mount breaker installs into Square D L-Frame enclosures, switchboards, and panelboards. As a legacy component, it is replaced by the JGL36225, which requires a retrofit kit. Rated for 65kAIC at 240VAC and 25kAIC at 600VAC, it features adjustable magnetic trip settings, AL400LA lugs, and a HACR rating for demanding environments.
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval
CSA, IEC, UL
Temp Rating
40C
Construction Features
HACR Rated, High Interrupting Capacity
Product FAQs
6 answers
What enclosures and panels are compatible with the LHL36225?
This unit mount breaker is designed for use in older Square D L-Frame enclosures, switchboards, and panelboards. It is a feed-thru breaker and is not compatible with I-Line bus systems.
Is the Square D LHL36225 still manufactured, or is there a direct replacement?
The LHL36225 is a legacy molded case circuit breaker. Schneider Electric replaces this L-Frame model with the PowerPact J-Frame series, specifically the JGL36225. Upgrading to the newer PowerPact frame will require a retrofit kit to adapt the mounting and bus connections.
What wire sizes are accepted by the lugs on this 225A breaker?
The standard lugs accept either one 1 AWG to 600 kcmil aluminum or copper conductor, or two 1 AWG to 250 kcmil aluminum or copper conductors per phase.
What does the LI trip function code mean on the LHL36225?
The LI designation indicates a thermal magnetic trip unit with Long-Time and Instantaneous protection. The Long-Time thermal element is fixed, while the Instantaneous magnetic trip is adjustable, allowing electricians to fine-tune the short-circuit response threshold.
Can the LHL36225 be used in DC power applications?
Yes, this breaker is rated for DC systems up to 250VDC. It provides an interrupting capacity of 50kAIC at 250VDC and 125VDC.
Does this breaker mount directly onto an I-Line bus?
No, the LHL36225 features a feed-thru, unit mount connection type. It requires hardwired lug connections on both the line and load sides and cannot be plugged into an I-Line distribution panel.
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