Klemsan
270180 G1-SVP
Voltage monitoring relay

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General Casing Width (mm) 17,5
  Connections Screw Terminal
  Network 3Ø with Neutral
Monitoring Functions Phase Failure Fixed Delay Time 500ms
  Phase Sequence Fixed Delay Time 500ms
  Adjustable/Fixed Unbalanced Protection Range/Limit ±20%
    Hysteresis 3% x Un ≈ 6.9VAC
    Delay Time ---
  Adjustable Voltage Protection Upper Limit ---
    Lower Limit ---
    Hysteresis 6VAC
    Delay Time toff: 0.1=>10sec
  Adjustable Current Protection Upper Limit ---
    Lower Limit ---
    Hysteresis ---
    Delay Time ---
  Adjustable Frequency Protection Upper Limit ---
    Lower Limit ---
    Hysteresis ---
    Delay Time ---
  Adjustable/Extremely High-Low Voltage Protection Upper Limit ---
    Lower Limit ---
    Hysteresis ---
    Delay Time ---
  PTC Protection Fixed Delay Time 2000ms
    Threshold 1100Ω
General Response Time for Monitoring Any Function Maks. 250ms
  Type of Output Relay
Auxilary Contacts Type 1 C/O (SPDT)
  Max. Ratings - AC (for NO Side) 10A/250VDC;150W
  Max. Ratings - DC (for NO Side) 5A/30VDC;150W
  Mechanical Lifetime ≥107 operation
  Electrical Lifetime Operations (for NO Side) 5x104(5A@250VAC) 1x105 (5A@30VDC)
Supply Voltage DC ---
  AC 230VAC ±25% from L3-N
General Supply Frequency 50-60Hz
  Control Input Voltage Range ---
Ambient Conditions Operating Temperature -20°C +60°C
  Storing Temperature -40°C +75°C
  Relative Humidity (No Condensation) Maks. 95% (no condensation)
General Operating Frequency 50-60Hz
  Protection Class IP20
Power Consumption DC ---
  AC <3VA
General Mounting Type Rail
  EMC-EMI
  Packing Unit 1
  Weight (g) 70
  Packing Unit 1
  Dimensions ---

Klemsan protection relays protect system devices against unbalanced voltage and prevent errors caused by motor winding temperatures. 

CE Certificate
General Product Information [pdf]
270180 Voltage monitoring relay