| Desctription | Symbol | Unit | Parameters & Models | |||
| Rated operational voltage | Uc | V | 275 | 320 | 385 | 440 |
| Nominal discharge current | In | kA | 30 | 30 | 30 | 30 |
| Maximum discharge current | Imax | kA | 60 | 60 | 60 | 60 |
| Voltage protection level | Up | Kv | 1.5 | 1.8 | 2.0 | 2.2 |
| Protection degree | IP | 20 | 20 | 20 | 20 | |
| Response time | ns | 25 | 25 | 25 | 25 | |
| Fuse | A | 63 | 63 | 63 | 63 | |
| Material | PA6 | PA6 | PA6 | PA6 | ||
| Fire retardent (comply with) | UL94V-0 | UL94V-1 | UL94V-2 | UL94V-3 | ||
| Standards | IEC61643-1:1998 | |||||
| Single Phase Model | L/N | BY40-60/1-275 | BY40-60/1-320 | BY40-60/1-385 | BY40-60/1-440 | |
| L,N | BY40-60/2-275 | BY40-60/2-320 | BY40-60/2-385 | BY40-60/2-440 | ||
| L/N+NPE | BY40-60/1+1-275 | BY40-60/1+1-320 | BY40-60/1+1-385 | BY40-60/1+1-440 | ||
| Three phase Model | L1,L2,L3 | BY40-60/3-275 | BY40-60/3-320 | BY40-60/3-385 | BY40-60/3-440 | |
| L1,L2,L3,N | BY40-60/4-275 | BY40-60/4-320 | BY40-60/4-385 | BY40-60/4-440 | ||
| L1,L2,L3,N+NPE | BY40-60/3+1-275 | BY40-60/3+1-320 | BY40-60/3+1-385 | BY40-60/3+1-440 | ||
| Local indication: Green indicates normal state and red indicates failure. | ||||||
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