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Key switches are electromechanical switches that can only be operated with the use of a key, which then is turned to different positions to break or complete the circuit. The different positions align with different states, such as 'ON' or 'OFF', giving a clear indicator of the state of the circuit. Key switches are typically used for operations and process that may require a higher level of safety or security clearance as they cannot be accidentally switched on or off without using the appropriate key. RS supply a range of key-operated switches from a variety of brands, including APEM, C&K, Lorlin, and our own RS PRO, as well as others. You can find more information in our [key switches guide](/web/content/discovery/ideas-and-advice/key-switches-guide).

### What are key switches used for?

Key switches are commonly found in industrial environments, such as factories and warehouses, but can be found anywhere that it is deemed an appropriate security level to use a key-operated switch. Typical applications may include:Fire alarm systemsData cabinets or serversFuses boxesProcessing or assembly linesLarge or heavy-duty machinery



Shop our range of Key Switches supplies & accessories. Free Next Day Delivery. Browse our latest Key Switches offers.

Key Switches, Key Operated Lock Switches | RS

Key Switches

Buy from our selection of Key Switches from Eaton. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Eaton Key Switches | RS

Buy from our selection of Key Switches from Honeywell. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Honeywell Key Switches | RS

Buy Idec Key Switches. Browse our latest Idec Key Switches offers. Free Next Day Delivery.

Idec Key Switches | RS

Buy from our selection of key switches from APEM. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

APEM Key Switches | RS

<p>From the well-known brand APEM a selection of key witches that are suitable for both industrial and commercial applications. With strong technical expertise and many years of experience, APEM has become one of the leading manufacturers of high-quality key switches. APEM key switches are used in industries such as instrumentation, industrial automation, medical, defence and transport.</p><p>All APEM key switches have been manufactured using top-quality materials and are designed and tested to meet the latest industry certifications and standards.</p><h2>Features and Benefits of APEM Key Switches</h2><ul><li>Easy to install and connect</li><li>Long mechanical life</li><li>Single pole and double pole contact configurations</li><li>Latching (maintained) or momentary (spring return) switch operation</li><li>Solder or wire lead terminals</li><li>2, 3 or 4 positions</li><li>45Ëš and 90Ëš key indexing angle</li></ul>

Buy from our selection of key switches from C&K. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

C&K Key Switches | RS

<p>If you are thinking about a key switch for your current application, then look no further. Here at RS, we are pleased to offer you a selection of top-quality key switches from the industry-leading brand C&K. With years of experience in design and manufacturing C&K Key Switches are robust, reliable and offer long mechanical life.</p><p>C&K key switches are perfect for use in a wide range of industrial, automotive, medical and consumer products and applications.</p><h2>Features and Benefits</h2><ul><li>Simple to install and connect</li><li>Long mechanical life</li><li>Anti-static versions that exceed 20 KV dc resistance</li><li>Single pole and double pole contact configurations</li><li>Latching (maintained) or momentary (spring return) switch operation</li><li>Solder or PCB terminals</li><li>2, 3 or 4 positions</li><li>45Ëš and 90Ëš key indexing angle</li></ul>

Buy EAO Key Switches. Browse our latest EAO Key Switches offer. Free Next Day Delivery!

EAO Key Switches | RS

<p>EAO Key Switches are meticulously crafted with precision and attention to detail, ensuring a seamless and reliable user experience. Designed to meet the highest standards of quality, these switches offer exceptional tactile feedback, allowing you to confidently operate your devices with ease and precision.</p><p>Security is paramount, and EAO Key Switches provide peace of mind. With their reliable locking mechanism, you can effectively control access to sensitive systems, equipment, or confidential information. Whether it's an electronic lock, a secure cabinet, or an industrial control panel, these switches offer the utmost protection against unauthorized use.</p><p>Built to last, EAO Key Switches are engineered using robust materials, guaranteeing longevity and durability. They are designed to withstand the rigors of demanding environments, making them the perfect choice for applications that require resilience and reliability.</p><p>EAO Key Switches come in a variety of styles and configurations, allowing you to tailor your control solution to meet your specific needs. From momentary action switches to maintained action switches, you have the flexibility to choose the switch that best suits your requirements.</p><p>With their unrivalled reliability and secure operation, these switches empower you to take charge of your devices and protect what matters most. Choose EAO Key Switches and open the door to limitless possibilities.</p>

APEM Key Switches

Features and Benefits of APEM Key Switches

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