the input joint box isclassified into H model, D model by appearance, and 2-pole, 3- pole, 4-pole by pole number.
Dimensions andinstalation
| Description | A | B | C |
| H model two-pole | 82 | 62 | 56 |
| H model three-pole | 92 | 70 | 72 |
| H model four-pole | 96 | 76 |
Installation pitch of champ
| Description | C(mm) | ||
| single-hole | 40 | ||
| two-hole | 56 | ||
| three-hole | 72 | ||
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