Esmi NF-8155 220VDC 16A 1x NO + 1x NC impulse relay

Relays are used as an interface between different signal levels or to isolate one signal from another. Relay is similar in function to a contactor. The modules are often used to enable the outputs of PLC's to control higher voltage and current loads. For example, a load voltage can be even 250 V and it will be still completely galvanically isolated from the PLC.

Impulse relay commonly used for switching and controlling electrical circuits. An impulse relay like this is typically activated by a brief control signal, which shifts the relay’s contacts between open and closed states, making it effective in circuit control systems that need stable switching with minimal power consumption.

Relays have the following qualities:

• Cheap
• Small size, but compared to size can still connect large currents and voltages
• Simple construction
• Does not interfere with the controlled signal besides for the contacts resistive effect (in practice no effect on anything)
• Can drive alternating current and directed current loads

Some examples of relay applications:

• Control of AC / DC loads
• Application with electrical isolation
• To convert an NPN output into a PNP output
• To convert an PNP output into a NPN output

Relay base is sold separately. Relay socket which is featured in product pictures is there only for illustration purposes.

Relay technical specifications:

• Operating voltage:
  • 220VDC
• Rated contact current:
  • 16A
• Rated contact voltage:
  • 220VDC
• Type and number of contacts:
  • 1x NC
  • 1x NO
• Contact material:
  • Not stated
• Operating current:
  • Not stated
• Operation indicator:
  • Vvisual orange mark
• Protection:
  • There is no
• Insulation (test voltage V_rms 1min):
  • Not stated
• Operating temperature:
  • Not stated