For safe switching of your industrial motors, go for this contactor from Siemens. Its electromagnetic coil is energised by the power supply and it repeatedly opens and closes an attached circuit to control your equipment. With a 40A operating current, it's just the thing for high-current-consuming applications. Thanks to an operating temperature range between -25°C and +60°C, you can rest assured the unit can handle demanding conditions. It's finger-proof, so you're in safe hands as there's reduced risk of contact with live parts. This contactor is an essential part of industrial automation systems.

• Compact dimensions of 85 (H) x 45 (W) x 97mm (D) for space efficiency in confined setups
• Mechanical service life of up to 10 million switching cycles for long-term performance
• Snap-on mounting on a DIN rail doesn't need tools, saving time and hassle
• Power rating of 40kW makes it suitable for heavy-duty applications

The main difference between contactors and relays is their load capacity. Relays are designed for applications with loads between 5 and 15A, while contactors can handle the challenge of switching higher current systems.