Page 21 - WENZHOU ZHUOCHAO ELECTRIC CO.,LTD.

C176/C178/C180 Universal change-over switch

Product model and meaning

C178 - □ □ □ / □

Contact system section number
Operation chart serial number
Characteristic code
Change-over angle code
Specification code (Conventional free air heating current)
Enterprise code

Technical parameters

Model and specification C176 C178 C180
Rated insulation voltage Ui V 660 660 660
Conventional heating current Ith A 20 20 20
Rated operating voltage Ue V 440 240 440 240 440 240
Rated operating current Ie
AC-15 A 15 15 15
AC-3 A
DC-13 A 1 1 1
AC-21 A

External dimension and Installation dimension(mm)
1-5（ Thickness of mounting panel）
4.5
> C176A-20/ □
Φ12.5
B 49 36
49

L=37+11n 36
A 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 F D1 D2
C176A-20 Square panel 49 49 49 37+11n 36 36 Φ12.5 Φ4.5
C176A-20 Large square panel 49 61 49 37+11n 36 36 Φ12.5 Φ4.5

1-5（ Thickness of mounting panel）
4-Φ4.5
> C176B-20/ □□
43 Φ12.5
B 36

36
A L=37+11n
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 F D1 D2
C176B-20 Square panel 49 49 49 37+11n 36 36 Φ12.5 Φ4.5
C176B-20 Large square panel 49 61 49 37+11n 36 36 Φ12.5 Φ4.5

P 17