ABB's Three Phase Servicenter?: Integral Transformer and Distribution Panel is a convenient, economical way to meet your industrial and temporary power requirements. This unit incorporates a Type QL transformer (three phase), a primary main circuit breaker, a secondary main circuit breaker, and a load center style breaker panel. Everything is factory installed, saving the contractor time and money. This Servicenter? can be used wherever 240 Volt, 480 Volt or 600 Volt primary is available and 208Y/120 Volt secondary circuits are required.