| Silver bare chip | |
| Size | φ24.9 |
| Packing size | φ25.5 |
| MOV(metal oxide varistors) |
 |
| Model Number | 1 Maximum | Nominal varistor voltage(VN) | ID(DC) | limiting voltage | Clamping | Maximum | Maximum | Typical | Tmax (mm) | max (mm) | ||||
| 2 Contiuous | voltage | Peak Current | Energy | Capacitance | ||||||||||
| Voltage(VM) | (max.) | Ⅱ (8/20μs) | (Joule) | (Reference) | ||||||||||
| Normal Type | AC.Rms | DC | V1.0mA( V ) | Vn（V） | VC | IP | In | I Max. | 10/1000 | @ 1KHz | Φ | |||
| ( V ) | ( V ) | min. | max. | at In | ( V ) | ( A ) | ( KA ) | μs | ( pf ) | |||||
| 25D431K | 275 | 350 | 387 | 473 | ＜10mA | 1100 | 710 | 300 | 10 | 20 | 920 | 2700 | 4.3 | ＜26 |
| 25D471K | 300 | 385 | 423 | 517 | 1200 | 775 | 300 | 1000 | 2400 | 4.4 | ||||
| 25D511K | 320 | 415 | 459 | 561 | 1250 | 845 | 300 | 1060 | 2300 | 4.4 | ||||
| 25D561K | 350 | 460 | 504 | 616 | 1400 | 925 | 300 | 1150 | 2000 | 4.4 | ||||
| 25D621K | 385 | 505 | 558 | 682 | 1500 | 1025 | 300 | 1280 | 1900 | 4.4 | ||||
| 25D681K | 420 | 560 | 612 | 748 | 1700 | 1120 | 300 | 1320 | 1800 | 4.4 | ||||
| 25D711K | 440 | 585 | 639 | 781 | 1750 | 1180 | 300 | 1400 | 1700 | 4.8 | ||||
| 25D751K | 460 | 615 | 675 | 825 | 1800 | 1240 | 300 | 1500 | 1600 | 4.8 | ||||
| 25D781K | 485 | 640 | 702 | 858 | 1850 | 1290 | 300 | 1676 | 1550 | 4.8 | ||||
| 25D821K | 510 | 670 | 738 | 902 | 1900 | 1355 | 300 | 1863 | 1500 | 4.8 | ||||
| The main technical index | |||
| Model specification | 34S511K | 34S621K | 34S751K |
| Packing size | 459~561 | 558～682 | 675～825 |
| Maximum continuous operating voltage | 320VAC | 385VAC | 460VAC |
| Dc leakage current | ≤15μA | ||
| Nominal discharge current | 10 kA | ||
| Maximum discharge current | 20 kA | ||
| Maximum limiting voltage | ≤1.3kV（at10kA） | ≤1.5kV (at10kA) | ≤1.5kV (at10kA) |
| Electrode surface coating | Silering | ||
| Thichness tmax(mm) | 6.1mm | 6.6mm | 6.6mm |
| Storage conditions | 1) Storage temperature:-10℃～+40℃ 2) Relative humidity:＜75%RH 3) This product can’t place in a bare place and can’t be stored in an environment exposed to corrosive gases or direct sunlight. | ||
| Operating temperature | -40℃～+85℃ | ||
| Sign | Can laser marking on the surface of mov(packing material) | ||
| Production range and parameters | |||||||||
| Type | Varistor voltage V1mA V | Tolerance range V1mA % | Maximum allowable voltage | Clamping voltage(Max.) | Maximum Peak Current(8/20μs) | Nominal Peak Current(8/20μs) | Energy（2ms） | ||
| U ac V | U dc V | U p V | I A | Imax KA | In KA | E J | |||
| WRA25D471K | 470 | ±10 | 300 | 385 | 775 | 150 | 20 | 10 | 300 |
| WRA25D511K | 510 | ±10 | 320 | 415 | 845 | 150 | 20 | 10 | 310 |
| WRA25D561K | 560 | ±10 | 345 | 460 | 925 | 150 | 20 | 10 | 320 |
| WRA25D621K | 620 | ±10 | 385 | 505 | 1025 | 150 | 20 | 10 | 330 |
| WRA25D681K | 680 | ±10 | 420 | 560 | 1120 | 150 | 20 | 10 | 340 |
| WRA25D711K | 710 | ±10 | 440 | 585 | 1180 | 150 | 20 | 10 | 350 |
| WRA25D751K | 750 | ±10 | 460 | 615 | 1240 | 150 | 20 | 10 | 360 |
| WRA25D821K | 820 | ±10 | 510 | 670 | 1355 | 150 | 20 | 10 | 380 |
