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The JLA36150 Square D 3P 150A 600V I-Line Circuit Breaker is designed for optimal performance and reliability in high-demand applications. With a 50KA interrupting capacity, it ensures robust protection against overload and short circuits. Ideal for commercial and industrial use, this circuit breaker is a crucial component for ensuring electrical safety.
No. I-Line and QO are completely different mounting systems. The JLA36150 uses Square D's I-Line plug-in bus system, designed for commercial and industrial panelboards and switchboards. QO breakers use a different plug-on clip mechanism for residential and light-commercial QO loadcentres. The two are not interchangeable — always match the breaker's mounting type to your panelboard's bus system.
Availability of specific Square D JLA-frame breakers can vary. Northern Breaker Group specializes in sourcing obsolete, discontinued, and hard-to-find circuit breakers across Canada. Whether the JLA36150 is a current or legacy part, we can check new, surplus, and reconditioned stock. Contact our Calgary, Edmonton, or Vancouver counter for availability and lead time.
Before installation, confirm: (1) your panelboard is rated for I-Line plug-in breakers; (2) the bus is rated for at least 150A per phase and 600V; (3) the panelboard's available fault current does not exceed the breaker's 50kA interrupting rating; and (4) the JLA frame size is compatible with the slot in your panelboard. If you're unsure of any of these details, share your panelboard model with us and we'll help you confirm the fit.
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