The Siemens 3TX4422-2A auxiliary switch block is a compact and reliable component designed for seamless integration with contactor relays and motor contactors. Engineered to meet the stringent requirements of industrial applications, this switch block boasts a robust construction that ensures durability and a long service life, with a typical mechanical operating cycle count of 10 million.
With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, the 3TX4422-2A provides a high level of electrical insulation and protection against transient voltage spikes. The switch block features 2 normally open (NO) and 2 normally closed (NC) contacts, allowing for flexible configuration in control circuits.
The device is suitable for operating temperatures ranging from -25°C to +55°C, ensuring reliable performance in a variety of environmental conditions. The front of the unit is protected to IP20, safeguarding the internal components from solid objects larger than 12.5mm.
Installation is made simple with its snap-on mounting design, and the dimensions of 45mm in width, 24mm in height, and 25mm in depth make it an easy fit in tight spaces. The screw-type terminals provide a secure and reliable electrical connection, accommodating a range of conductor cross-sections for auxiliary contacts.
The 3TX4422-2A is a testament to Siemens' commitment to quality, offering a dependable solution for enhancing control systems in industrial settings across the United Kingdom and beyond.