What are Force-Guided Contact Relays?

In modern industry, safety is always one of the top priorities, especially in automation systems and electrical control fields. Force-Guided Contact Relays, as a safety relay, have become a crucial component in ensuring the safety of both equipment and personnel, thanks to their unique design and reliable performance. This article will provide a detailed introduction to Force-Guided Contact Relays, covering their definition, working principle, features and advantages, applications, and more.

I. What are Force-Guided Contact Relays?

Force-Guided Contact Relays are a special type of relay where the contacts are mechanically linked to ensure that certain contacts cannot close simultaneously. This design complies with international standards such as IEC 61810-3 (or EN 50205), ensuring that in the event of contact welding or breaking, the system can reliably detect the issue and take appropriate measures. When a relay fails, the different states of the contacts help monitor and prevent potential hazards.

II. Working Principle

The working principle of Force-Guided Contact Relays is based on a mechanical interlocking system inside the relay, typically involving the connection of normally open and normally closed contacts via specially designed linking components. When current flows through the coil, the armature moves, triggering the switching of the contacts. Since the contacts are mechanically linked, if one contact fails (e.g., welding), the status of the other contact will be affected, which allows the system to promptly detect the fault and ensure the safety of the system.

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