BS EN 61810-3:2015

What is BS EN 61810-3 - Relays with forcibly guided contacts about?  

An electromechanical relay is a type of relay which functions using a magnetic field produced by an electromagnetic coil when a control signal is applied to it. It is called electromechanical since it has moving contacts in the output circuit which are operated by applying an electrical signal.  

BS EN 61810-3 - EM applies to elementary relays in which special design and constructional measures are used to ensure that make (normally-open) contacts cannot assume the same state as break (normally-closed) contacts. These relays can be used in self-monitoring control systems, e.g. safety-related control systems. BS EN 61810-3 specifies special requirements and tests for elementary relays with forcibly guided contacts, also known as mechanically linked contacts. 

Who is BS EN 61810-3 - Relays with forcibly guided contacts for? 

BS EN 61810-3  on Relays with forcibly guided contacts is useful for: 

• Manufacturers of general-purpose and protection relays 
• Product development / innovation / research teams 
• Quality control teams 

Why should you use BS EN 61810-3 - Relays with forcibly guided contacts?  

Automation involving the connection and disconnection of electrical circuits is carried out by using electromechanical (EM) relays. The relay is also an electromechanical switch used as a protection device and also as a controlling device for various circuits, equipment, and electrical networks in a power system. The electromechanical relay can be defined as an electrically operated switch that completes or interrupts a circuit by physical movement of electrical contacts into contact with each other. 

BS EN 61810-3 provides you with guidelines on forcibly guided (mechanically linked) operation, changeover contacts, mechanical endurance, and operating conditions. In addition, BS EN 61810-3 also gives you details on verification and type tests and characteristic values and marking. Using BS EN 61810-3 guidelines, you can determine requisites and tests for elementary relays with forcibly guided contacts, also known as mechanically linked contacts. BS EN 61810-3 guidelines enable you to manufacture and provide your customer with reliable and high-quality products. 

What’s changed since the last update?  

BS EN 61810-3:2015 supersedes BS EN 50205:2002. BS EN 61810-3:2015 includes some editorial changes with respect to BS EN 50205:2002. These include: 

• Latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement has been fixed as 01.01.2016 
• Latest date by which the national standards conflicting with the document have to be withdrawn has been fixed as 01.04.2018