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70 Series: Line monitoring relays for single and three-phase applications
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70 Series: Line monitoring relays for single and three-phase applications

Finder offers a new range of Electronic voltage monitoring relays for single and three-phase application - in 17.5 or 35 mm housings. Types 70.11, 70.31 and 70.41 cover the following functions and points of specification: Models for the multi-function contr...

Finder offers a new range of Electronic voltage monitoring relays for single and three-phase application – in 17.5 or 35 mm housings.
Types 70.1170.31 and 70.41 cover the following functions and points of specification:

  • Models for the multi-function control of undervoltage and overvoltage, phase sequence, phase loss, asymmetry and loss of neutral
  • Positive safety logic (the contact opens when the monitored parameter is outside of limits.
  • All functions and values can be easily adjusted by the selector and trimmer on front face
  • “Blade + cross” – both flat blade and cross head screw drivers can be used to adjust the regulators, the function selector, and to release the 35mm rail catch
  • Colored LEDs for clear & immediate visual indication
  • 1 CO relay output, 6 or 10 A
  • Compact module sizes (17.5 mm or 35 mm wide)
  • Mounting on 35 mm rail (EN 60715)
  • Cadmium Free contacts

These relays join the type 70.61 for three-phase loss and rotation (replacing the type 72.31 as reported in the Finder News January 1 2012).

European Patent pending for the innovative principle at the root of the 3 phase monitoring and error survey system.

The 70.61 technical characteristics are as follows:

  • Universal voltage monitoring (UN from 208 V to 480 V, 50/60 Hz)
  • Phase loss monitoring, even under phase regeneration
  • Positive safety logic – Make contact opens if the relay detects an error
  • 1 CO relay output, 6 A
  • Compact size (17.5 mm wide)
  • 35 mm rail (EN 60715) mount
70.11 70.31 70.41 70.61
System Type Single-phase Three-phase Three-phase Three-phase
Rated voltage (50/60 Hz) in V 220…240 380…415 380…415 208…480
Undervoltage with / without memory (selectable)
Overvoltage with / without memory (selectable)
Window mode with / without memory (selectable)
Window mode without memory
Phase loss
Phase sequence
Asymmetry
Loss of neutral (selectable)
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