3RH1122-1KB40

The Siemens 3RH1122-1KB40 is a robust contactor relay designed to facilitate the switching of auxiliary circuits in a variety of industrial applications. This component is engineered to handle a control supply voltage of 24 V dc, making it suitable for direct current operations. It features a compact size S00, which allows for efficient use of space within control cabinets.

With an IP20 protection class on the front, the device is safeguarded against solid objects larger than 12.5 mm, ensuring reliable performance in environments where incidental contact may occur. The contactor relay boasts an insulation voltage rated at 690 V, with a degree of pollution of 3, indicating its capability to withstand a certain level of contaminants that could potentially affect its operation.

The 3RH1122-1KB40 is designed to operate within a wide range of ambient temperatures, from as low as -25°C to as high as +60°C, making it versatile for use in various climatic conditions. It also has a high resistance to shock, withstanding impacts of 10g / 5 ms and 5g / 10 ms, which is critical for maintaining functionality in environments subject to vibrations or sudden jolts.

This contactor relay is equipped with 2 normally open (NO) and 2 normally closed (NC) contacts, providing flexibility in configuring control circuits. The contacts are rated for an operating current of up to 10 A at AC-12 and can handle various AC and DC loads with different rated values, ensuring compatibility with a wide range of applications.

Mounting the 3RH1122-1KB40 is made easy with its screw and snap-on options, and it can be installed in various positions, including a +/-180° rotation on a vertical mounting surface. The device also allows for a forward and backward tilt of +/- 22.5°, offering additional installation flexibility.

The contactor relay's screw-type terminals facilitate secure and reliable electrical connections for both auxiliary and control current circuits. It can accommodate a range of conductor cross-sections, ensuring compatibility with various wiring requirements.

With its combination of durability, versatility, and reliable performance, the Siemens 3RH1122-1KB40 contactor relay is an essential component for managing auxiliary circuits in industrial settings.

• Control and operation of auxiliary circuits in industrial automation systems
• Switching of signal inputs and outputs in control panels
• Interfacing between electronic controllers and power loads
• Use in safety circuits for monitoring and control
• Implementation in motor control centres for auxiliary contact functions
• Integration into HVAC systems for controlling auxiliary functions
• Employed in conveyor systems for start/stop operations
• Utilised in packaging machinery for precision control tasks
• Application in lighting control circuits for commercial buildings
• Serving as an interface in control systems for water treatment plants