NewTrend · Anti-harmonic phase-sequence and phase-failure relay
Product overview
NewTrend RV8-03X monitors phase sequence and phase failure in a three-phase control circuit. Choose the M460 three-wire version for AC 220-460V phase-to-phase systems or the M265 four-wire version for AC 127-265V phase-to-neutral systems. The 18mm DIN-rail relay provides 1 SPDT output contacts rated 10A (AC-1). Its anti-harmonic design is intended for installations with higher electrical interference.
Technical selection summary
| Model | RV8-03X |
|---|---|
| Function | Phase sequence and phase failure |
| Design | Anti-harmonic type |
| Voltage-system versions | M460: 3P3W; M265: 3P4W with neutral |
| M460 rated voltage range | AC 220-460V, phase-to-phase |
| M265 rated voltage range | AC 127-265V, phase-to-neutral |
| M460 monitoring / supply terminals | L1-L2-L3 / L1-L2 |
| M265 monitoring / supply terminals | L1-L2-L3-N / L1-N |
| Supply frequency | 45-65Hz |
| Measurement | True RMS |
| M460 measuring range | 176-552V |
| M265 measuring range | 101-318V |
| Measurement error | Maximum 1% |
| Power-up delay | 0.5 seconds |
| Reset time | 1000ms |
| Temperature coefficient | 0.05%/degree C at 20 degrees C |
| Supply / phase-state indication | Green LED |
| Output indication | Red LED |
| Output contacts | 1 SPDT |
| Contact rating | 10A (AC-1) |
| Switching voltage | 250VAC / 24VDC |
| Minimum DC breaking power | 500mW |
| Mechanical life | 10,000,000 operations |
| Electrical life (AC-1) | 100,000 operations |
| Operating temperature | -20 to +55 degrees C |
| Storage temperature | -35 to +75 degrees C |
| Mounting | DIN rail to EN/IEC 60715; 1 module |
| Protection | IP40 front panel; IP20 terminals |
| Operating position | Any |
| Overvoltage category / pollution degree | III / 2 |
| Maximum conductor size | Solid: 1 x 2.5mm2 or 2 x 1.5mm2; with sleeve: 1 x 2.5mm2 (AWG 12) |
| Body dimensions | 90 x 18 x 64mm |
| Weight | 61-66g by version |
| Terminal tightening torque | 0.8Nm |
Photograph shows 3P4W / AC 127-265V (M265). Match the terminal arrangement and voltage system to the installation. This exact 03 function code provides phase-sequence and phase-failure monitoring.
Operation
- The relay supervises the phase sequence and phase continuity; the native timing diagrams show output behavior during phase loss and reversed phase order.
- Select the three-wire or four-wire hardware version when ordering. The supply and monitoring terminals differ between M460 and M265.
Typical applications
- Phase-order supervision in motor contactor-control circuits
- Phase-loss supervision for movable, agricultural and industrial equipment
Specify your enquiry
For a focused quotation, include:
- M460 three-wire or M265 four-wire voltage system
- Required contact arrangement, controlled load and contactor details
- Quantity and destination
Download NewTrend RV8-03X datasheet (PDF)
Product reference images and drawings
M460 and M265 terminal connections
Phase failure and phase sequence
Common housing dimensions; RV8-04X front view shown. Product photograph shows 3P4W / AC 127-265V.
Connect the selected voltage-system version as shown: M460 monitors L1-L2-L3 and obtains supply from L1-L2; M265 monitors L1-L2-L3-N and obtains supply from L1-N. Use the output to control suitable external switching equipment. A supply-terminal phase loss can extinguish the function LED; do not interpret an unlit indicator as proof that the circuit is safe. Installation and wiring must be performed by qualified electricians.
