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  Monitoring Relays (1,265 items)

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7KT1681
from £ 134.83*
per piece
Siemens
7KT1682
from £ 174.84*
per piece
Siemens
7MH4138-6AA00-0BA0
from £ 567.05*
per piece
Voltage monitoring relay; overvoltage,too low voltage; ACT20P (1 offer) 
Manufacturer: WEIDMÜLLER Mounting: for DIN rail mounting Operating temperature: -25...60°C Kind of output 1: DPDT Power supply: external IP rating: IP20 Supply voltage: 24...240V AC;24...240V DC Le...
Weidmüller
ACT20P-VMR-1PH-H
from £ 102.99*
per piece
Voltage monitoring relay; for DIN rail mounting; ACT20P; DPDT (1 offer) 
Manufacturer: WEIDMÜLLER Mounting: for DIN rail mounting Operating temperature: -25...60°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Body...
Weidmüller
ACT20P-VMR-3PH-ILP-H
from £ 110.17*
per piece
Voltage monitoring relay; undervoltage,phase failure; IP20 (1 offer) 
Manufacturer: ZAMEL Mounting: for DIN rail mounting Operating temperature: -20...45°C Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Body dimensions: 35.4x90x66mm Ou...
ZAMEL
APM-20
from £ 60.99*
per piece
Voltage monitoring relay; undervoltage,phase failure; CA; 1÷5s (1 offer) 
Attention! This product is sold up to the quantity available in stock. In case of larger orders, the amount will be replaced by the available quantity. Manufacturer: ZAMEL Mounting: wall mount Oper...
ZAMEL
CAH-01
from £ 8.93*
per piece
Voltage monitoring relay; phase asymmetry,phase failure; CA (1 offer) 
Manufacturer: ZAMEL Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: SPST-NO Kind of output 2: SPST-NC Power supply: from tested wiring system IP rating: IP20 Lea...
ZAMEL
CAM-01
from £ 17.43*
per piece
Voltage monitoring relay; phase asymmetry,phase failure; CA (1 offer) 
Manufacturer: ZAMEL Mounting: for DIN rail mounting Operating temperature: -20...60°C Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Number of terminals: 9 Type of m...
ZAMEL
CAM-10
from £ 33.09*
per piece
Voltage monitoring relay; wall mount; CK; SPST-NO; 250VAC/10A (1 offer) 
Manufacturer: ZAMEL Mounting: wall mount Operating temperature: -20...60°C Kind of output 1: SPST-NO Power supply: from tested wiring system IP rating: IP65 Leads: cables Number of terminals: 6 Typ...
ZAMEL
CKH-01
from £ 16.24*
per piece
Voltage monitoring relay; for DIN rail mounting; CK; SPDT; 1÷5s (1 offer) 
Manufacturer: ZAMEL Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Number of...
ZAMEL
CKM-01
from £ 19.29*
per piece
Power limiter; reactive power,active power; 230VAC; SPST-NO (1 offer) 
Manufacturer: ZAMEL Operating temperature: -20...60°C Kind of output 1: SPST-NO IP rating: IP65 Supply voltage: 230V AC Body dimensions: 69x56x27mm Number of terminals: 3 Related items: ASH-01 Type...
ZAMEL
PMH-01
from £ 22.06*
per piece
Power limiter; reactive power,active power; 230VAC; SPST-NO (1 offer) 
Manufacturer: ZAMEL Operating temperature: -20...60°C Kind of output 1: SPST-NO IP rating: IP20 Supply voltage: 230V AC Body dimensions: 90x17.5x66mm Number of terminals: 4 Type of module: power li...
ZAMEL
PMM-01
from £ 23.44*
per piece
Power limiter; reactive power,active power; 230VAC; SPST-NO (1 offer) 
Manufacturer: ZAMEL Operating temperature: -20...60°C Kind of output 1: SPST-NO IP rating: IP20 Supply voltage: 230V AC Body dimensions: 90x17.5x66mm Number of terminals: 4 Type of module: power li...
ZAMEL
PMM-02
from £ 25.00*
per piece
Voltage monitoring relay; undervoltage,overvoltage; 230VAC (1 offer) 
Manufacturer: ZAMEL Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: from tested wiring system IP rating: IP20 Supply voltage: 230V AC Leads: s...
ZAMEL
PNM-10
from £ 27.23*
per piece
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