Source over 158 power distribution boxes for sale from manufacturers with factory direct prices, high quality & fast shipping. Our power distribution boxes range from 20-800 Amps and are well known for being durable, long lasting and. PLEASE NOTE BEFORE PURCHASING: This product requires professional electricians to wire and install it. Non professionals are prohibited from using it; If there are any quality or wiring technical issues with the product, please contact us and we will replace the product or refund your order. Find expert-curated Distribution Boxes products from the #1 US plumbing supplier and top distributor of HVAC, waterworks, and MRO products. A distribution box serves as a crucial component in electrical installations, housing circuit breakers, fuses, and other protective devices that ensure safe power distribution. Avoid the cost and hassle of setting up multiple generators with these rugged, yet lightweight power distribution boxes. Plug one into a generator for small jobs, or chain several together to supply electricity to multiple rooms.