Siemens Low Voltage RP1 Unassembled Lighting Panel. Dimensions (H x W x D) IN 32.0 x 20.0 x 5.75. 1-Phase 3-Wire allows 18 circuits user selects Main Device (Lug/Breaker). Rated 120/240V (250A). Special features tin-plated copper main bus,subfeed space included