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Isotrol Isotrol Systems Isolated Power PanelsBender Medical Line Isolation Monitors





Model Number Search


  Products    Relays
Measuring and Monitoring Relays


Please choose from one of the following categories:

Voltage Relays
  • Monitors for overvoltage and undervoltage
  • Units Including alarm relays/dry contacts
  • Various relays for AC, 3(N)AC, and DC systems

Current Relays
  • Monitors for overcurrent and undercurrent
  • Units Including alarm relays/dry contacts
  • Various relays for AC and DC systems

Asymmetry Relays
  • Monitors for phase failure in three-phase systems
  • No external supply voltage required
  • Monitors for systems with or without neutral

Phase Sequence / Failure Relays
  • Monitors for proper phase sequence
  • Also monitors for undervoltage and signal phase failure
  • Monitors for with or without neutral available

Frequency Relays
  • Monitors for overfrequency and underfrequency
  • SFE140 monitors within 50-60 Hz threshold
  • NEW VMD/VME420 series monitors 15-460 Hz

Continuity Relays
  • Monitors ground conductor for proper continuity
  • Continuous monitoring range up to 100 &Ohm;
  • Available in digital and analog versions





700 Fox Chase - Coatesville PA 19320 USA
Phone: 610-383-9200 / Fax: 610-383-7100 - Toll Free: 1-800-356-4266
To request more information, use our online form
or email us at: info@bender.org