| Technical parameters | PSF | PSA |
| Function | Auto Phase Selector of Monitoring 3-phase voltage | |
| Monitoring terminals | L1-L2-L3-N | |
| Voltage range | 230V(P-N) | |
| Rated supply frequency | 45Hz-65Hz | |
| Measuring range | 160V-280V | 160V-280V |
| Threshold adjustment voltage | Fixed | Adjustable |
| Over voltage level: | 280 | 230V-280V |
| Under voltage level: | 160V | 160V-210V |
| Max. permanent overload: | 300V | |
| Time delay | Adjustable 0.1s-10s,10% | |
| Measurement error | ≤1% | |
| Run up delay at power-up | 0.5s time delay | |
| Konb setting accuracy | 10% of the scale value | |
| Reset time | 1000ms | |
| Output | SPDT | |
| Current rating | 10A/AC1 | |
| Switching voltage | 250VAC/24VDC | |
| Min. breaking capacity DC | 500mW | |
| Temperature coefficient | 0.05%/℃,at=20℃(0.05%℉,at=68℉) | |
| Mechanical life | 1×10^7 | |
| Electrical life(AC1) | 1×10^5 | |
| Operating temperature | -20℃ to +55℃(-4℉ to 131℉) | |
| Storage temperature | -35℃ to +75℃(-22℉ to 158℉) | |
| Mounting/DIN rail | Din rail EN/IEC 60715 | |
| Protection degree | IP40 for front panel/IP20 terminals | |
| Operating position | any | |
| Overvoltage category | III | |
| Pollution degree | 2 | |
| Max.cable size(mm 2) | solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12) | |
| Tightening torque | 0.5Nm | |
| Dimensions | 90×18×70mm | |
| Weight | 61g-66g | |
| Standards | EN61812-1,IEC60947-5-1 | |