Part Number EA3 21 03 003 PS21B having (CAGE Code R0349) and FSC 6110 Electrical Control Equipment in stock with ready to ship. Get an instant quote for EA3 21 03 003 PS21B Switchboard Power by Wilhelmsen Callenberg A S Formerly Semco. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.