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| MODEL | YL1-D20 | YL1-D20 | YL1-D20 | |
| Rated voltage of Un(V) | 275V | 385V | 420V | |
| Max. continuous operating voltage Uc(-V) | 275V | 385V | 420V | |
| Voltage protection level of up(8/20 μs)(KA) | 1.2kV | 1.5kV | 1.6kV | |
| Normal discharge current In(8/20μs)(KA) | 10 | 10 | 10 | |
| Max.discharge current of Imax(8/20μs)(KA) | 20 | 20 | 20 | |
| The response time of NS | < 25 | |||
| Test level | II Level | |||
| The width of mm | 18 | |||
| Color | Red | |||
| Protection grade | IP20 | |||
| Shell material | Reinforced flame retardant PBT | |||
| Environmental temperature | .-40℃~+85℃ | |||
| A fuse or circuit breaker(A) | 20A | |||
| The line Specifications | Phase line,zero line | 2.5~35mm² | ||
| Wire | 4.0~35mm² | |||
| The signal line | 1.5mm² | |||
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