MCB distribution board extension boxes are designed to provide additional space for accommodating more circuit breakers or wiring within your existing consumer unit setup. ompliant with the safety regulations. You know you according to IEC 332. 3A. Our flexible distribution boxes enable reliable, decentralised signal transmission and power transmission up to protection class IP67 – wherever passive distribution boxes are required. Ideal for system upgrades, retrofits, or future circuit expansion, these extension boxes maintain a tidy and compliant. The range of applications extends from pure energy distribution in buildings to building automation and through to industrial plants. SMART DISTRIBUTION BOXES FOR FLEXIBLE BUILDINGS. Despite this, it often ekes out an inconspicuous existence in the basement or utility room until something stops working properly or an extension becomes. Pricing (USD) Filter the results in the table by unit price based on your quantity. Mouser offers inventory, pricing, & datasheets for.