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Square D HLW4BL is a blank extension for panelboards, suitable for AC or DC systems. The product is labeled with cULus compliance, ensuring certification by UL and CSA standards. This service entrance panelboard is factory-assembled for the Canadian market. Available in configurations of 400A to 1200A for main lugs and circuit breakers, this blank extension measures four point five inches in height. Each box contains five extensions.
Effective for applications needing blank panels in existing panelboards.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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