Monitoring Relays
What are Monitoring Relays?
Monitoring relays are electrical devices that are used to monitor various parameters in a power system, such as voltage, current, temperature, and frequency, and trigger an alarm or action if the values go beyond a preset threshold. They are designed to detect abnormal operating conditions in a system and alert operators or take corrective action to pre...
Showing 1-20 of 1280 products
RS Pro
-
Monitoring Relay
1
-
-
Undervoltage Monitoring
SPST
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
IP20
-
230V ac
-
120/300 V
-
-
-20°C
-
-
-
-
-
-
55°C
-
-
90.3mm
CE-UKCA ROHS-3
52.9mm
67.5mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
1
-
-
Undervoltage Monitoring
-
-
-
-
DIN Rail
-
250V ac
6VA
-
-
-
-
-
-
IP20
-
220V ac
-
-
-
5A
-20°C
-
-
-
-
-
-
55°C
GKM
-
-
2006/95/EC - 2004/108/EC
94.6mm
35.6mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
1
-
-
Undervoltage Monitoring
-
-
-
-
DIN Rail
-
250V ac
6VA
-
-
-
-
-
-
IP20
-
220V ac
-
-
-
5A
-20°C
-
-
-
-
-
-
55°C
DKG
-
-
2006/95/EC - 2004/108/EC
9mm
35.4mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
Plug
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
150, 260V ac
-
150/260 V ac
-
-
-20°C
-
-
-
-
-
-
55°C
FKV
-
6mm
2006/95/EC - 2004/108/EC
95mm
23mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
Undervoltage Monitoring
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
IP20
-
380V ac
-
230/460 V
-
-
-20°C
-
-
-
-
-
-
55°C
-
-
75mm
ROHS-3, CE-UKCA
44mm
84.5mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
Plug
-
-
-
-
DIN Rail
-
250V ac
4VA
-
-
-
-
-
-
IP20
-
380V ac
-
380 V ac
-
5A
-20°C
-
-
-
-
-
-
55°C
FKV
-
-
2006/95/EC - 2004/108/EC
95mm
23mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
-
-
-
-
-
DIN Rail
-
250V ac
6VA
-
-
-
-
-
-
IP20
-
380V ac
-
-
-
5A
-20°C
-
-
-
-
-
-
55°C
GKT
-
-
2006/95/EC - 2004/108/EC
94.6mm
35.4mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
-
SPDT
-
-
-
DIN Rail
5A
-
-
100A
-
Overcurrent
-
-
-
IP20
0.1 to 20 s
150, 260V ac
-
-
-
-
-20°C
-
-
-
-
-
-
55°C
-
-
75mm
ROHS-3, CE-UKCA
44mm
84.5mm
-
-
-
-
-
-
-
-
RS Pro
-
Phase/Voltage Monitoring Relays
1
-
-
Undervoltage Monitoring
1 x 8A CO Relay Output
-
-
-
DIN Rail
-
-
6VA
-
-
-
Screw
-
-
IP40, IP20
-
230V ac
270 V dc
150 to 300 V ac
-
8A
-5°C
-
-
-
-
-
-
55°C
-
-
90mm
EC 60529, EC 60255-3, EC 60870-5, EC 60255-6
59mm
36mm
-
-
-
-
-
-
-
-
RS Pro
-
Phase/Voltage Monitoring Relays
1
-
-
Undervoltage Monitoring
-
-
-
-
DIN Rail
-
-
2W
-
-
-
Screw
-
-
IP40, IP20
-
230V ac
270 V dc
150 to 300 V ac
-
8A
-5°C
-
-
-
-
-
-
55°C
-
-
90mm
EC 60255-6, EC 60255-3, EC 60529, EC 60870-5
59.7mm
36mm
-
-
-
-
-
-
-
-
RS Pro
-
Phase/Voltage Monitoring Relays
3
-
-
Plug, Transducer
1 CO
-
-
-
DIN Rail
-
-
-
-
-
-
Screw
-
-
-
-
230V ac
-
230 V ac
-
8A
-5°C
-
-
-
-
-
-
55°C
-
-
90mm
No
58mm
35mm
-
-
-
-
-
-
-
-
RS Pro
-
Phase/Voltage Monitoring Relays
3
-
-
Plug
1 CO
-
-
-
DIN Rail
-
-
-
-
-
-
Screw
-
-
-
-
230V ac
-
380 V ac
-
8A
-5°C
-
-
-
-
-
-
55°C
MKC-03
-
90mm
No
58mm
35mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
1
-
-
-
SPDT
-
-
-
DIN Rail
-
-
3W
-
-
-
Screw
-
-
IP20
-
-
24 V dc
-
-
8A
-20°C
-
-
-
-
-
-
60°C
L
-
89mm
RoHS, UL, CE, IEC, EMC EN 61000-6
66.5mm
17.5mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
-
SPDT
-
-
-
DIN Rail
-
-
8VA
-
-
-
Screw
-
-
-
-
280, 520V ac
-
280/520 V ac
-
8A
-20°C
-
-
-
-
-
-
60°C
L
-
89mm
RoHS, EN 61000-6-4, cUL, IEC 60664
66.5mm
17.5mm
-
-
-
-
-
-
-
-
RS Pro
-
Monitoring Relay
3
-
-
Undervoltage Monitoring
SPDT
-
-
-
DIN Rail
-
-
16VA
-
-
-
Screw
-
-
IP20, IP30
-
223, 7795V ac
-
120/240 V ac
-
3A
-20°C
-
-
-
-
-
-
60°C
MAG0
-
90mm
No
66.5mm
90mm
-
-
-
-
-
-
-
-
...



















