How Electromechanical Relays Break Down
110.00 £
Published date: 2025/10/08
- Location: 3523, Kaibito, Louisiana, United States
Relay switches are ubiquitously implemented in industrial, automotive, and consumer electronics for رله switching circuits on and off. Despite their robust design and proven performance, they are at risk of various operational failures that can cause critical system shutdowns or life-threatening conditions.
A prevalent issue is contact erosion. Every time a relay switches, an electrical arc is generated between the contacts, during load switching with back-EMF. Over time, this the discharge wears down the contact material, leading to unstable current flow, partial contact loss, or complete failure to close. This problem is more pronounced in relays that cycle rapidly or conduct substantial amperage.
A common destructive pattern is contact welding. When a relay closes under high current, the resulting arc can generate enough heat to melt the contact surfaces, causing them to stick in contact.
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