| Technical parameters | A208,A220,A230,A240A,A380,A400,A415,A440,A460,A480 | N120,N127,N132,N138,N220,N230,N240,N254,N265,N277 |
| Function | Phase sequence, phase failure, overvoltage, undervoltage and unbalanced voltage of Monitoring 3-phase voltage | |
| Monitoring terminals | L1-L2-L3 | L1-L2-L3-N |
| Voltage range | 208-220-230-240-380-400-415-440-460-480(P-P) | 120-127-132-138-220-230-240-254-265-277(P-N) |
| Rated supply frequency | 45Hz-65Hz | |
| Measuring range | 150V-600V | 85V-345V |
| Threshold adjustment voltage | 2%-20%of Unselected | |
| Adjustment of asymmetry threshold | 5%-15% | |
| Hysteresis | 2% | |
| Phase failure value | 70% of Un selected | |
| 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 | 87×45×77.5mm | |
| Weight | 130g-135g | |
| Standards | EN61812-1,IEC60947-5-1 | |
