Square D™ brand Mini Power-Zone™ unit substation from Schneider Electric provides the answer to requirements for a portable, compact power supply for small loads. It features a separate transformer and panel section, allowing for flexible installation. This allows the panel section to be removed and wired first if desired. These transformers can be replaced without disturbing the panel section and associated wiring. The new transformer simply slides into the top of the panel section and primary and secondary leads are reconnected to the main circuit breakers. Provides a wide range of breaking capacity between 18 to 65 kA at 480 Vac. This Mini Power-Zone Sealed Transformer is a 3 phase, with a primary voltage of 480V and a secondary voltage of 208Y/120V with bolt on breakers. This transformer has a temperature rise of 115 °C and a insulation temperature rating of 185 °C. These transformers are installed on the interior of the load center that has 27 spaces. With a rated power of 15kVA, it has a short circuit current of 18kA. The enclosure material is hot-rolled steel and is rated at NEMA 3R. This transformer complies to UL listed standards.