The 3RU2146-4MB0: Current production — lifecycle stage is 'current'. No last-time-buy announced. Complies with substance prohibition dated 03/01/2017 (RoHS-like). This is the active variant; no official successor. Quoted to order against an RFQ.
Mounting: Contactor mounting with M8 bolts, torque per Siemens. Depth 125 mm, width 70 mm, height 105 mm. Wire sizing: main circuit accepts up to 70 mm² stranded per pole (10-70 mm²). Auxiliary circuit accepts 0.5-2.5 mm² solid/stranded. Ambient operation -40 to +70 °C; storage/transport -55 to +80 °C.