top of page

How Relays Work

Relays are an important part in your BAS and you will be running into these with almost every installation or troubleshooting situation. This is a must to understand while in the Automation industry.

Relays are used to isolate circuits from one another, parallel a binary signal or can be used to start equipment for your BMS. When you apply voltage across the contacts you will pull in the relay by inducing a electromagnetic field through the internal coil. After this occurs the internal magnetic armature connected to the common terminal (COM) will switch from its NC (normally closed) position to the NO (Normally Open) position.

4 views0 comments

Recent Posts

See All

As we all know in the BMS industry a good set of wire cutters are tremendously indispensable for a technician. In this post I will cover the top three wire cutters/ strippers for the BMS professional.

"Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, on

Post: Blog2_Post
bottom of page