SIEMENS LOW VOLTAGE 3VA UL MOLDED CASE CIRCUIT BREAKER WITH ELECTRONIC TRIP UNIT. 3VA63 FRAME WITH MEDIUM (CLASS H) BREAKING CAPACITY. 250A 3-POLE (22KAIC AT 600V) (65KAIC AT 480V). ETU550 TRIP UNIT LCD LSI. SPECIAL FEATURES CONNECTION WITH LUG TERMINAL / NUT KEEPER. 100 PERCENT RATED. DIMENSIONS (W x H x D) IN 5.4 x 9.8 x 5.4.