The Siemens 3RT7026-1AQ00 is a Size S0 contactor from the SIRIUS family, built for switching three-phase motor loads in control panels.
The 3-pole set is for three-phase loads; if your circuit needs a fourth pole or NC main contacts, this isn't the variant. IP20 on the front and terminals means finger-safe protection — standard for enclosed panels. That's enough for most motor-circuit wiring up to the rated current.
Panel integration and environment
Operating temperature range is -10 to +55 °C; storage from -25 to +70 °C. Shock resistance is 12.5g at 5 ms and 7.8g at 10 ms sine pulse — tough enough for most machine-mounted panels. The auxiliary switch option is available as a product extension if you need feedback contacts later.