Combined Phase Failure, Sequence & Thermistor Relay
- Din rail mounted
- Monitors loss of phase
- Monitors phase sequence
- Monitors up to 6 thermistors
- Klixon version available
- Separate outputs for phase & thermistor circuits
- Separate LED indication
- Available 3 or 4 wire
- Transformer technology
- Ideal lift industry product
Din rail mounted combined phase failure, sequence thermistor relay (Klixon version also available). Available in either 3 or 4 wire and self powered, with separate output contacts and LED indication for phase faults and thermistor faults. Both contacts energise when all is healthy, the phase relay R2 will de-energise when a phase sequence error is detected or a phase is lost (and in a 4 wire version also the Neutral).
The thermistor circuit relay R1 will de-energise on detection of either a short circuit or overheat (resistance below 30 Ohms or above 3.3 KOhms). Both relays are slightly delayed (delay fixed) to avoid nuisance tripping. The LED indicators will diagnose the circuit problems, a healthy situation results in all the LEDs being illuminated.
