Page 27 - WENZHOU ZHUOCHAO ELECTRIC CO.,LTD.

LW12D Series universal change-over switch

Operating conditions
a)Upper limit of ambient air temperature is +40℃ while lower limit is -25℃ . Average temperature within 24 hours does not exceed +35℃ ;
b)The altitude of installation site does not exceed 2000m;
c)When ambient air temperature is +40℃ , air relative humidity does not exceed 50%, higher relative humidity is allowed at a lower
temperature. When monthly average temperature of the wettest month does not exceed +25℃ , monthly average maximum relative
humidity should not exceed 90%.
d)Pollution class and installation category are class 3 and category III respectively.

Classification
1.Classify by purpose: a) Used for master control; b) Used for directly controlling 5.5KW three-phase AC motor.
2.Classify by operating mode: a)Positioning type; b)Self-resetting type; c)Position self-resetting type; d) Interlocking type.
3.Classify by contact system section number: a)Positioning type; b)Self-resetting type; c)Position self-resetting type; d) Interlocking type.
4.Classify by manipulator appearance: T-type, gun-type, rotary knob type, fishtail type and key type.
5.See Table 1 for classification by operating mode and actuator position combination.
Table1
Purpose Master control Actuator position
A 0°
Self-resetting type
B 45° 0° 45°
C 0° 45°
D 45° 0° 45°
E 45° 0° 45° 90°
F 90° 45° 0° 45° 90°
G 90° 45° 0° 45° 90° 135°
H 135° 90° 45° 0° 45° 90° 135°
I 135° 90° 45° 0° 45° 90° 135° 180°
J 120° 120° 90° 60° 30° 0° 30° 60° 90° 120°
Positioning type K 120° 120° 90° 60° 30° 0° 30° 60° 90° 120° 150°
L 120° 120° 90° 60° 30° 0° 30° 60° 90° 120° 150°
M 120° 120° 90° 60° 30° 0° 30° 60° 90° 120° 150° 180°
S 0° 60° 120° 180° 240° 300°
N 45° 45°
0° 90°
P 90° 0°
90° 0° 90°
R 0° 90° 180° 270°
45° 0° 90°
Positioning self- 90° 0° 45°
Z
resetting type 90° 45° 0° 45° 90°
135° 90° 0° 45°
Positioning self- 45° 0° 45° 90°
resetting type 90° 45° 0° 45°
Attached with ZL
interlocking 90° 45° 0° 45° 90°
device

Model meaning of change-over switch used for master control
LW 12 - 16 □ · □ / □ □

Wet tropical zone product code
Contact system section number
Operation chart serial number
Positioning characteristic code
Conventional free air heating current
Design code
Universal change-over switch

Note: Wet tropical zone product code: TH or TA.
P 23