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  Monitoring Relays (822 items)

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Phoenix Contact Voltage Monitoring Relay, 2 → 10V dc / 1812035 (1 offer) 
SCK measuring module for monitoring photovoltaic systems, 1 x voltage measurement up to 1500 V DC, 1 x analog output (2 .. 10 V)
Phoenix Contact
2903591
£ 189.942*
per piece
 
 piece
Phoenix Contact Voltage Monitoring Relay, 3 Phase / 2416094 (1 offer) 
Monitoring Application = Voltage Electrical Phase = 3 Series = EM-EV-CLR-12V
Phoenix Contact
2903246
£ 79.438*
per piece
 
 piece
Relpol Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 552 V, DIN Rail / 9143945 (1 offer) 
Europa Components ECPF Series. Europa Components professional range of phase loss and phase failure monitoring relays.
Relpol
ECPF03
£ 22.87*
per piece
 
 piece
Relpol Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 552 V, DIN Rail / 9143954 (1 offer) 
Europa Components ECPF Series. Europa Components professional range of phase loss and phase failure monitoring relays.
Relpol
ECPF05
£ 36.54*
per piece
 
 piece
Relpol Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 552 V, DIN Rail / 9143957 (1 offer) 
Europa Components ECPF Series. Europa Components professional range of phase loss and phase failure monitoring relays.
Relpol
ECPF08
£ 32.512*
per piece
 
 piece
RS PRO Current Monitoring Relay, 1 Phase, SPDT, DIN Rail / 1026134 (1 offer) 
RS PRO Current Monitoring Relay With SPDT ContactsDesigned for current monitoring, this true RMS (Route Mean Square) multi timer can measure both pure and distorted AC waves. This makes it suitable...
RS Pro
1026134
from £ 79.626*
per piece
 
 piece
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount / 2257384 (1 offer) 
RS PRO Phase Sequence/Failure IndicatorRS PRO is proud to introduce this high-quality monitoring relay. This device is a 3-Phase indicator used for monitoring a 3-wire supply while providing a visu...
RS Pro
2257384
£ 43.541*
per piece
 
 piece
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail / 2237791 (1 offer) 
RS PRO Phase Monitoring RelaysRS PRO is proud to present a complete range of phase monitoring relays designed for 3 phase systems. Each monitor relay is packed with excellent features to ensure eff...
RS Pro
2237791
£ 96.278*
per piece
 
 piece
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail / 2237792 (1 offer) 
RS PRO Phase Monitoring RelaysRS PRO is proud to present a complete range of phase monitoring relays designed for 3 phase systems. Each monitor relay is packed with excellent features to ensure eff...
RS Pro
2237792
£ 85.15*
per piece
 
 piece
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail / 2237794 (1 offer) 
RS PRO Phase Monitoring RelaysRS PRO is proud to present a complete range of phase monitoring relays designed for 3 phase systems. Each monitor relay is packed with excellent features to ensure eff...
RS Pro
2237794
£ 85.15*
per piece
 
 piece
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, Phase Loss, Voltage Assemmetry, DIN Rail / 2237795 (1 offer) 
RS PRO Phase Monitoring RelaysRS PRO is proud to present a complete range of phase monitoring relays designed for 3 phase systems. Each monitor relay is packed with excellent features to ensure eff...
RS Pro
2237795
£ 94.595*
per piece
 
 piece
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 243 → 540 V, DIN Rail, Surface Mount / 2257388 (1 offer) 
RS PRO 3-Phase Failure Sequence & Under-Voltage Relay The RS PRO 3-Phase voltage monitoring relay is used for connecting to a 3-wire or 4-wire supply. The relay is designed to monitor its own suppl...
RS Pro
2257388
£ 85.913*
per piece
 
 piece
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail / 2257387 (1 offer) 
RS PRO 3-Phase Under/Overvoltage Relay with Phase SequenceThe RS PRO 3-Phase monitoring relay is used for connecting to a 3-wire or 4-wire supply. The relay is designed to monitor its own supply an...
RS Pro
2257387
£ 86.576*
per piece
 
 piece
RS Pro
1026136
from £ 45.234*
per piece
 
 piece
RS Pro
1026137
from £ 58.44*
per piece
 
 piece
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* Prices with asterisk are net prices excl. statutory VAT.
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