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The SIEP1C66ML250AT is a Siemens 66CCT 250A MLO P1 panel designed for reliable performance in 120/208V applications. This heavy-duty panel offers optimal circuit management, making it ideal for commercial and industrial settings. Its robust construction ensures long-lasting durability, providing peace of mind for your electrical distribution needs.
MLO stands for Main Lug Only — this 250A panelboard does not include a built-in main breaker. You must install an appropriately rated upstream main breaker or disconnect (typically a 250A device) to provide overcurrent protection and disconnecting means for the panel. Our team can help you source a matching Siemens upstream device if needed.
This panel supports up to 66 circuits (66CCT) as configured. Tandem or twin breakers may be used in approved spaces, but the total number of allowable overcurrent devices is governed by the panel's directory and the Canadian Electrical Code. Consult your panel's wiring diagram or contact us to confirm which positions support tandem breakers.
Northern Breaker Group specializes in obsolete and hard-to-find Siemens electrical equipment across Canada, with counter locations in Calgary, Edmonton, and Vancouver. Whether the SIEP1C66ML250AT is a current or discontinued unit, we can source it or identify a compatible replacement — reach out for a quote.
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