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Monitoring Relays
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Motor Thermal Protection Relays
Manufactured by Crouzet
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ETM, ETM2 & ETM22 Motor Temperature Monitoring Relays
- PTC input
- Supplies 24V ac/dc, 240Vac
- DIN rail mount, 22.5mm wide
- Relay 8A 440Vac
- ETM - 1 N/O contact, ETM2 1 changeover, ETM22 2 changeover
- Auto reset ETM, remote & local push button reset ETM2 & ETM22
- Test button ETM2 & ETM22
- -20°C to +60°C operation
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Thermistor Temperature Sensing Relays
Manufactured by Finder
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Finder 71.91 Thermistor Temperature Monitoring Relay
- 24V AC/DC or 240Vac supply
- Temperature detection with PTC
- Positive safety logic, make contact opens on error
- PTC short circuit or open circuit detection
- Single pole NO contact, 10A 250Vac
- DIN rail mounted, 35mm wide
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Finder 71.92 Thermistor Temperature Monitoring Relay
- 24V AC/DC or 240Vac supply
- Temperature detection with PTC
- Positive safety logic, make contact opens on error
- PTC short circuit or open circuit detection
- Fault memory selectable
- Double pole CO contact, 10A 250Vac
- DIN rail mounted, 35mm wide
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Thermistor Temperature Sensing Relays
Supplied by Crompton Instruments
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Crompton Instruments PMM-T Thermistor Trip Relay
For motor over heating protection
- 24V-240V ac/dc supply
- Temperature detection with PTC or TK input
- Positive safety logic, make contact opens on error
- PTC short circuit or open circuit detection
- Double pole CO contact, 8A 250Vac
- DIN rail mounted, 17.6mm wide
Instructions
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PS R Single Phase Pump Monitoring & Protection Relays
Eliminates the need for level sensors to detect dry running
- PS11-R single phase motors from 3A to 11A
- PS16-R single phase motors from 3A to 16A, with integral CT
- Precise motor heating & cooling memory
- Visual indication of tripping cause
- Adjustable reset time for I<
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PF R Three Phase Pump Monitoring & Protection Relays
Eliminates the need for level sensors to detect dry running
- For 3-phase motors from 1A to 630A and over
- Cable fed through integral CTs
- Precise motor heating & cooling memory
- Visual indication of tripping cause
- Adjustable reset time for cos φ
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PF-RM Timer/reset module
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OD-PF External display module
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LP-FAN-INT Fanox Pump Protection Relay Interface
Provides isolated status outputs and reset input for remote monitoring
- Opto coupler isolated
- Status outputs: power, cos φ, I> & phase asymmetry/sequence error
- Reset input to reset the PF series relay
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