Siemens 3RT6025-1BW40 — 48 VDC Coil Power Contactor, S0 Frame
Its 48 VDC coil pulls in reliably across the rated control voltage range, and the screw-type main and auxiliary terminals accept up to 10 mm² conductors (2x 0.75…2.5 mm² stranded). Rated for AC-3 duty up to 690 V, this contactor delivers 23 kW at 400 V and 40 kW at 690 V.
Operating temperature range -25…+60 °C; storage range -55…+80 °C covers most industrial environments.
Switching Performance and Contact Ratings
Maximum switching frequency: 1 000 cycles/hour for AC-1, AC-3, and AC-3e duty; 300 cycles/hour for AC-4 (plugging/inching); 1 500 cycles/hour for DC operation. The 48 VDC coil draws 6 A at 24 V rated value, 1 A at 110 V, 0.3 A at 220 V, and 10 A at 230 V — these are the contact ratings for the main poles, not the coil draw. Insulation voltage rated 690 V, pollution degree 3 suitable for industrial atmospheres. The contactor accepts auxiliary switch extensions (product extension auxiliary switch: yes), allowing add-on blocks for status feedback or interlocking without replacing the base unit.