Want to protect your equipment when you flip the on/off switch? Get this auxiliary contactor from Siemens to boost your power management function. It has four poles, so you can run multiple circuits through it. As the tough plastic casing carries an IP20 rating, you can be sure the unit is safe to touch. Mounting is a cinch – just clip the unit onto a DIN rail, without reaching for your toolkit. It's a versatile option for use with motors, lighting networks and HVAC systems.

• Screw terminals get a firm grip on conductors to cut the risk of accidental disconnection
• Small dimensions of 57.5 (L) x 45 (W) x 73mm (D) take up little space on a DIN rail
• Performs reliably in temperature extremes from -25°C to +60°C

Make sure that the AC, coil voltage and current ratings can handle the demands of your application. This means high-current equipment needs a high-current contactor such as this 10A-rated component.

The product prefers vertical mounting but it offers some room for manoeuvre as you can tilt it backwards or forwards by 22.5°.