Part Number: TDB2U203 3-30S Manufacturer: Nieaf Smitt Part Series: TDB2U2 Electronic plug-in railway timer-relay, 72 Vdc, 2 x change-over contacts, less height than the TDB4 relay, time delay is fixed at 3-30s. Available to Order Quantity × 1 Item added to your Quotation Basket TDB2U203 3-30S Nieaf Smitt Your Quotation Basket Items: 2