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Products I Phase failure relays I auto switch Semi
  • Features & Protections
  • Technical Specifications
Features & Protections
Phase failure / loss
Phase reversal / wrong phase sequence.
Phase to phase voltage unbalance.
In built Star to Delta timer so semi automatic starter will become fully automatic.
On delay timer for one minute for auto start for power failure and SPP faults.
Four indications for Power, Healthy, SPP, Time delay.
Site selectable auto / manual / bypass or only auto / manual facility.
Heavy duty auto manual switch for long life.
Widest working voltage range from 250 to 500 volts.
Suitable for up to 15 hp DOL and SASD starters.
Color coded thick and long wires with unit so no need for external wires for installation.
Compact, vermin proof, rust proof engineering plastic panel box.
Options - Auto switch with 3 / 5 minutes on delay timer.
Technical Specifications
Input Voltage (AC)
200-470 VAC,50 Hz
Output Contact Rating on 220 VAC 5 Amp , 240 VAC (resistive)
Output Contact 1 NO
Control Device Voltage Driven
Output wires 1 Red,1 Yellow, 1 Blue ,2 Black,2 Green
Site Selectable Auto / manual / bypass

by Toggle Switch

Single phasing After 4 sec +/- 2 sec
Phase reverse After 4 sec +/- 2 sec
Phase unbalance After 4 sec +/- 2 sec
Star Delta Timer 15 seconds
Autoswitch timer for SPP & Power failure 1 minute
Power Yes
SPP "Trip" LED Yes
"Timer" LED Yes
Starting time delay (sec) 45 sec + /- 15 sec
Reseting mode Auto
Delay time bypass facility Manual mode only
Mechanical life 1x1000000 Operations
Electrical life 0.5x1000000 Operations
Dielectric Strength
2.2 KV , 50 Hz for 1 min
Enclosure Material
Engineering Plastic
Connection PVC flexible
Mounting Screw
Temperature 60 C
Humidity Upto 90% RH
Dimensions (LxWxD)
120 X 110 X 65 MM
Power consumption
Approx. 2 Watts
Weight 333 gms

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