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Size
[70(W) x 89(H) x 50 (D)] mm, 35 mm Din Rail or Screw mounting, (Refer Fig. 21)
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Supply / Monitoring voltage
440 VAC, 50/60 Hz.
It monitors 3 phase supply voltage, Relay remains ON under healthy voltage condition, and during phase failure or phase unbalance (50V +-5V, Fixed) relay becomes OFF