Brochure/Catalogue
Advantages of electromechanical relay modules (EMR)
• AC and DC operation in load circuit possible
Versatile (advantage as interface between different
plant equipment)
• No leakage current in the load circuit
A semi-conductor does not achieve 100 % isolation
• Low residual voltage in the load circuit
Low voltage drop
• Signicantly lower power loss in the load circuit
In contrast to the semiconductor in the opto
module, there is very little electrical resistance in
the contacts of the electromechanical relay, which
can lead to a rise in temperature when under load.
Therefore, heat sinks are not required.
• Contact multiplication possible
A single control signal can switch several load circuits
• Control circuit insensitive to voltage peaks
The switch-on power of the magnetic coil prevents
unintentional switch-on due to voltage couplings.
Relay modules and solid-state relays – Comparison
Relay modules and solid-state relays – Comparison
Coil
Coil
Reset
spring
Fixed contacts
Movable contact
Armature
W
Technical appendix/Glossary
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