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Safety switch for protective equipment – contactless and tamper-proof

The Siemens Industry Automation Division has launched an electronic contactless safety switch for protective equipment, such as covers, flaps and doors, onto the market.

The new 3SE63 safety switch is based on contactless RFID (Radio Frequency Identification) transponder technology and offers a high level of protection against interference, tampering and bypassing. The rugged safety switch has a plastic enclosure providing a high degree of protection up to IP69K that is resistant to detergents and is designed for a long service life and for use under extreme environmental conditions.

It switches wear-free and covers a wide range of applications, including protective covers, flaps and doors that are difficult to adjust or that open and close frequently. The switch can be used in safety applications up to Performance Level e according to EN 13849-1 as well as SIL 3 according to IEC 61508/62061 and is suitable for connecting several devices in parallel.

The new 3SE63 safety switch satisfies the regulations for tamper-proof occupational safety protection through individual coding of the switch and actuator. The low-maintenance device is equipped with integrated monitoring functions for open-circuit, external voltage and cross-circuit, and has two short-circuit-proof 24 V DC safety outputs. Further comprehensive diagnostic functions, such as threshold indication, can be displayed on the status LEDs on the device or obtained from the diagnostics output for further processing. The new electronic safety switch has a larger switching displacement than mechanical switches and therefore a wider tolerance band. This means that the device can be mounted and adjusted quickly and easily.

The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of environmentally friendly production, transportation and building technologies. With integrated automation technologies and comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. In fiscal 2010, which ended on September 30, 2010, revenue from continuing operations of the Industry Sector (excluding Osram) totaled around €30.2 billion. At the end of September 2010, Siemens Industry Sector had around 164,000 employees worldwide without consideration of Osram. Further information is available on the Internet at:

The Siemens Industry Automation Division (Nuremberg, Germany) is a worldwide leader in the fields of automation systems, industrial controls and industrial software. Its portfolio ranges from standard products for the manufacturing and process industries to solutions for whole industrial sectors that encompass the automation of entire automobile production facilities and chemical plants. As a leading software supplier, Industry Automation optimizes the entire value added chain of manufacturers – from product design and development to production, sales and a wide range of maintenance services. With around 33,000 employees worldwide (September 30), Siemens Industry Automation posted sales of €6.2 billion in fiscal year 2010.

Reference Number: IIA2011072529e

Gerhard Stauss | Siemens Industry
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