3RH1921-1FA22

The Siemens 3RH1921-1FA22 contact block is designed for reliable operation across various applications. This component provides a maximum operating current rating of 10A. It supports two normally open (NO) contacts and two normally closed (NC) contacts, facilitating flexible designs.

Remarkably, this contact block has a mechanical service life reaching 10 million cycles, ensuring long-lasting performance. Additionally, it offers an electrical endurance of 200,000 switching cycles, making it suitable for frequent usage scenarios. The insulation voltage withstands up to 600 V, coupled with surge voltage resistance rated at 6 kV, providing an added layer of safety in its operational environment.

The block is built with an IP20 protection class, indicating suitability for indoor applications where it is shielded from direct moisture and dust ingress. In terms of installation, the unit employs snap-on mounting, which streamlines the fitting process. This contact block measures 38 mm in height, 44 mm in width, and 51 mm in depth.

Electrical connections utilize screw-type terminals, compatible with a range of conductor sizes. Specifically, it can accept conductors with cross-sections of 0.5 to 1.5 mm² and 0.75 to 2.5 mm². This unit has CE certification, confirming compliance with essential safety and performance standards, ensuring it meets reliability needs in electrical installations.