Looking for a reliable device to switch high-power loads in applications such as lighting and factory automation systems? This contactor from Siemens' SIRIUS Innovation series has a power rating of 11kW and can be used with currents of up to 25A and voltages up to 400V AC. Its three-pole configuration lets you switch the power on or off for a three-phase load, with two auxiliary contacts for interlocking circuits or remote signalling of the main contact switching states. The coil voltage of 230V AC makes this contactor suitable for use with the UK mains supply.

• Operating temperature range of -25°C to +60°C for reliable use a wide range of challenging environments
• Screw terminals help you quickly make secure connections without the need for specialist tools
• Compatible with side-by-side mounting to save space

An auxiliary contact is physically linked to the main contacts in a contactor and is activated at the same time. It carries less current than the main contacts and is generally used to switch interlocking circuits or to remotely signal switching or malfunction states.