The 3-Phase Monitor DSP-1L offers an affordable, high quality solution to provide protection from :

• Phase Loss
• Phase Unbalance
• Phase Reversal
• Phase Sequence

for your motors, compressors, pumps, ventilators or any other type of 3-phase electrical equipment. This is a 3-to-1 monitor: Phase Loss Monitor, Phase Reversal Monitor, Phase Unbalance Monitor.

The Controlab Three Phase Monitor is sometimes compared to a smart fuse or to intelligent protection relay: it continuously monitors the voltage level on each phase of your electrical supply. If a phase failure (single phasing) occurs, the 3-Phase Monitor DSP-1L will immediately open the control circuit of the protected equipment, thus preventing damage. When the voltage returns to normal, the Three-Phase Monitor DSP-1L resets itself and closes the control circuit, allowing the protected equipment to be started normally and safely.

Two (2) models of the Controlab 3-phase monitors are available for your applications:

- DSP-1L : With Triac inside, to control your magnetic starter relay.
- DSP-1LS : With a dry relay-contact inside, to give the status to a PLC or to drive a very small load