Page 22 - WENZHOU ZHUOCHAO ELECTRIC CO.,LTD.

1-5（ Thickness of mounting panel） 6-Φ4.5
> C180-20/ □·GS
Φ12.5 Φ12.5 2-Φ4.5

74 43 58
29
L=37+11n
30 30
74 81 58
Note: L= size of 1 section N denotes contact system plus section number
External dimension(mm) Installation dimension(mm)
Model and specification
A B C L E E2 F1 F2 D1 D2
C178-20 74 74 43 37+11 30 58 30 58 Φ12.5 Φ4.5

1-5（ Thickness of mounting panel）
4-Φ4.5
> C178B-20/ □□
Φ12.5
64 43 48
7.5
L=37+11n 48
64
Note: L= size of 1 section N denotes contact system plus section number

External dimension(mm) Installation dimension(mm)
Model and specification
A B C L E E D1 D3
C178B-20 64 64 43 37+11n 48 48 Φ12.5 Φ4.5

1-5（ Thickness of mounting panel）
4-Φ4.5
> C178B-20/ □
Φ12.5
43 48
78

L=37+11n 48
64
Note: L= size of 1 section N denotes contact system plus section number
External dimension(mm) Installation dimension(mm)
Model and specification
A B C L E E D1 D3
C178B-20 64 78 43 37+11n 48 48 Φ12.5 Φ4.5

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