The Siemens 3RH2911-1HA31 is a high-quality auxiliary switch designed for optimal performance in various industrial applications. This front-side mounted switch features 3 Normally Open (NO) and 1 Normally Closed (NC) current paths, making it versatile for different circuit configurations. It's specifically designed for use with 3RH2 and 3RT2 contactor relays and power contactors.
The switch boasts an impressive mechanical service life of approximately 10 million switching cycles and an electrical endurance of 200,000 cycles at AC-15 at 230V. This ensures long-lasting durability and reliability in demanding environments.
With a protection class of IP20, it offers a degree of protection against touch by fingers and objects not greater than 12mm. The switch can operate efficiently in a wide range of ambient temperatures, from -25°C to +60°C during operation and -55°C to +80°C during storage.
The 3RH2911-1HA31 auxiliary switch is also equipped with screw-type terminals for auxiliary and control current circuits, accommodating a variety of conductor cross-sections. This makes installation and connection a breeze.
In terms of dimensions, the switch measures 36mm in width, 37.5mm in height, and 43.7mm in depth, making it compact enough for installation in tight spaces.
In summary, the Siemens 3RH2911-1HA31 auxiliary switch is a robust, reliable, and versatile component, designed to meet the rigorous demands of industrial applications.