Siemens 3RT2027-1AL20 Contactor

Siemens 3RT2027-1AL20 is a 3-pole power contactor designed for AC-3 duty, delivering up to 32 A and 15 kW at 400 V. This compact S0-size device uses a 230 V AC coil (50/60 Hz) to switch three-phase motor loads, making it suitable for starting and stopping conveyors, pumps, fans, and other 3-phase equipment in industrial control panels. It includes one normally open and one normally closed auxiliary contact for simple interlocking and signaling, with screw-terminal connections for secure, durable wiring. The unit is specified for upright mounting and belongs to Siemens' 3RT family, providing predictable, robust performance in automation applications. Rated for AC-3e/AC-3 operation, the 3RT2027-1AL20 combines easy integration with Siemens accessories and control gear, enabling straightforward integration into standard motor starter assemblies. The combination of high current handling, defined kW rating at 400 V, and a compact form factor helps minimize panel space while meeting the reliability requirements of modern electrical installations.