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| PartNumber | 3SE50000AV02 | 3SE50000AV04 | 3SE50000AV03 |
| Description | Switch part, Interlock key, Coded with vertical fixing, length 53 mm | Switch part, Interlock key, radius, Left, Fits 3SE51/3SE52, 31mm L. | Switch part, Interlock key, Coded with transverse fixing, length 47 mm |