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  Mains monitoring relay  (38,713 offers of 6,230,546 product items)

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Sensata Cynergy3 RSF80 Series Horizontal External Polyphenylene Sulfide Float Switch, Float, 1m Cable, SPNO, 300V ac / 7259870 (2 offers) 
Suitable for signal switching and for use with transistorised input/low power, suppressed coil miniature relays. Not suited for any inductive or inrush (e.g. filament lamps) loads. Cynergy3 Horizon...
Sensata / Cynergy3
RSF86H100R
£ 28.493*
per piece
 
 piece
Siemens Base Power Relay, 24V dc Coil, 6A Switching Current / 2176874 (1 offer) 
The Siemens has plug in relay having 4 changeover contacts, without test bracket. The switching behaviour of relay is monostable. This relay has base mounting.Ambient temperature for operation is -...
Siemens
LZX:PT520024
£ 9.514*
per piece
 
 piece
Siemens 3RB Overload Relay 1NO + 1NC, 4 A Contact Rating, 250 kW, 3P, SIRIUS / 7518860 (2 offers) 
3RB20 Range. Internal power supply Auxiliary contacts 1 NO+1NC Manual/Automatic Reset Switching position indicator Test function Phase failure/unbalance sensitivity
Siemens
3RB2066-1MC2
£ 366.1425*
per piece
 
 piece
Siemens 3RF2 Series Solid State Relay, 600 V Load / 2114912 (2 offers) 
The Siemens has 3RF2 semiconductor relay with 1 phase. This semiconductor relay has zero-point switching. This relay has mounting type screw fixing. This semiconductor relay has screw terminal.IP d...
Siemens
3RF2020-1AA45
£ 39.49*
per piece
 
 piece
SICK Background Suppression Photoelectric Sensor, Block Sensor, 100 mm → 2.5 m Detection Range / 2104089 (2 offers) 
OverviewAt a glanceRobust die-cast zinc housing with IP 69K protection class Operating elements protected by a hood High ambient light immunity of the proximity sensors Switchable: PNP/NPN and ligh...
Sick
1016854
£ 374.266*
per piece
 
 piece
Siemens BPZ Series Controller for Use with 1 Analog Heating Circuit, Analog, Relay, 230 V ac / 2825241 (1 offer) 
Accessory Type = Regulator Series = BPZ Input Type = Analog Output Type = Relay For Use With = 1 Analog Heating Circuit Supply Voltage = 230 V ac Mounting Type = Wall Mount Maximum Operating Temper...
Siemens
RVP201.0
£ 812.845*
per piece
 
 piece
Siemens 3RB Overload Relay 2NO + 2NC, 0.3 → 630 A F.L.C, 630 A Contact Rating, 0.5 W, 24 → 240 V, 3P, / 2550827 (1 offer) 
FLC Motor Rating = 0.3 → 630 A Contact Current Rating = 630 A Range = SIRIUS Pole Configuration = 3P Series = 3RB Power Rating = 0.5 W Normal State Configuration = 2NO + 2NC Control Voltage = 24 → ...
Siemens
3RB2283-4AC1
£ 226.857*
per piece
 
 piece
Siemens 3RF2 Series Solid State Relay, 600 V Load / 2114929 (1 offer) 
The Siemens has 3RF2 semiconductor relay with 1 phase. This semiconductor relay has zero-point switching. This relay has mounting type screw fixing. This semiconductor relay has ring cable connecti...
Siemens
3RF2190-3AA06
£ 78.374*
per piece
 
 piece
SICK Background Suppression Photoelectric Sensor, Block Sensor, 20 mm → 1.2 m Detection Range / 2103975 (2 offers) 
OverviewAt a glanceLong sensing ranges: 1,200 mm with background suppression 15 m on PL80A reflector PinPoint LED with bright and precise light spot Small housing design 10 … 30 VDC or 24 … 240 VAC...
Sick
1065864
£ 194.537*
per piece
 
 piece
Siemens Communication Module, 110-240 V, 6 A, 120 V / 2130017 (1 offer) 
The Siemens 3UF7310-1AU00-0 is a Digital module, 4 inputs and 2 relay outputs, relay outputs bistable, max. 2 digital modules, for SIMOCODE pro V basic unitIP Degree of protection IP20.
Siemens
3UF7310-1AU00-0
£ 169.274*
per piece
 
 piece
Siemens 3RF2 Series Solid State Relay, 10 A Load, Screw Fitting, 600 V Load / 2104405 (2 offers) 
The Siemens solid-state contactor device are non-wearing and silent and are therefore ideal for noise-sensitive areas (offices, hospitals). They are also extremely reliable at high switching freque...
Siemens
3RF2410-1AB45
£ 109.73*
per piece
 
 piece
Siemens 3RF2 Series Solid State Relay, 90 A Load, Panel Mount, 460 V Load, 24 V dc Control / 4729092 (2 offers) 
Heat sink not included. For load current de-rating and heat sink details see manufacturers datasheet. 3RF20 Series. Self-contained unit Zero-cross switching IP20 Efficient thyristors with high reve...
Siemens
3RF2090-1AA04
£ 56.07*
per piece
 
 piece
SICK Background Suppression Photoelectric Sensor, Block Sensor, 20 mm → 950 mm Detection Range / 2103963 (1 offer) 
OverviewAt a glanceLong sensing ranges: 1,200 mm with background suppression 15 m on PL80A reflector PinPoint LED with bright and precise light spot Small housing design 10 … 30 VDC or 24 … 240 VAC...
Sick
1089223
£ 134.864*
per piece
 
 piece
Siemens Current Monitoring Relay, 3 Phase, SPDT / 2550844 (1 offer) 
Monitoring Application = Current Electrical Phase = 3 Contact Configuration = SPDT Voltage Sensitivity = Overvoltage, Undervoltage
Siemens
3RR2441-2AA40
£ 223.963*
per piece
 
 piece
Siemens 3RF2 Series Solid State Relay, 10.5 A Load, DIN Rail Mount, 460 V ac Load, 24 V dc Control / 5187528 (1 offer) 
3RF23 Series. Complete unit comprising solid state relay and optimised heat sink IP20 rating Optimised heat transfer by DCB technology Efficient thyristors with high reverse voltage Screw connectio...
Siemens
3RF2310-1BA04
£ 65.25*
per piece
 
 piece
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