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LW42 series cam switch

Purpose Product model and meaning

LW42 series cam switch is mainly applied to the electrical LW 42 - □ / □ · □
equipment (like CNC machine tools) of AC 50Hz, voltage 690V or DC
Contact system section number
voltage up to 440V and below for controlling, lighting, protecting
Operation chart serial number
and measuring. It can also be used directly to control small capacity
Conventional heating current (A)
squirrel cage asynchronous motor.
Design code
Cam switch
Operating conditions
a）Ambient air temperature does not exceed +40℃ , average temperature within 24 hours does not exceed +35℃ , lower limit of ambient air
temperature is -25℃ ;
b）The altitude of installation site does not exceed 2000m;
c）When maximum temperature is +40℃ , air relative humidity of installation site does not exceed 50%. Higher relative humidity is allowed
at a lower temperature. The monthly average minimum temperature of the wettest month does not exceed -25℃ , and its average maximum
relative humidity does not exceed 90% (For example, relative humidity reaches 90% in time of +20℃ . ). It’s required to adopt special
measures on the dew condensates that occasionally form due to temperature changes.
d）Switches can be installed on any occasions with oblique positions.
e）Pollution class and installation category are class 3 and category II/III respectively.

Classification
5.1 Classify by purpose: a) change-over switch for voltage conversion; b) change-over switch for current conversion.
5.2 Classify by operating mode: positioning type and self-resetting type.
5.3 Classify by installation mode: screw type, central hole type, protective shell type, and guide rail type.
5.4 Classify by manipulator appearance: handle rotary knob type, key type, self-adjusting door lock type.
5.5 Classify by operating mode and manipulator position combination, see Table 1.
Table1

Operating Characteristic
Actuator position
mode code
Self-resetting A 0° 30° 0° 45° 0° 60° 0° 90°
type B 30° 0° 30° 45° 0° 45° 60° 0° 60° 90° 0° 90°
C 0° 30° 0° 45° 0° 60°
D 30° 0° 30° 45° 0° 45° 60° 0° 60° 0° 90°
E 30° 0° 30° 60° 45° 0° 45° 90° 60° 0° 60° 120° 90° 0° 90°
F 60° 30° 0° 30° 60° 90° 45° 0° 45° 90° 120° 60° 0° 60° 120° 90° 0° 90° 180°
G 60° 30° 0° 30° 60° 90° 90° 45° 0° 45° 90° 135° 120° 60° 0° 60° 120° 180°
Positioning
H 90° 60° 30° 0° 30° 60° 90° 130° 90° 45° 0° 45° 90° 135°
type
I 90° 60° 30° 0° 30° 60° 90° 120° 130° 90° 45° 0° 45° 90° 135° 180°
J 120° 90° 60° 30° 0° 30° 60° 90° 120°
K 120° 90° 60° 30° 0° 30° 60° 90° 120° 150°
L 150° 120° 90° 60° 30° 0° 30° 60° 90° 120° 150°
M 150° 120° 90° 60° 30° 0° 30° 60° 90° 120° 150° 180°
Positioning N 45° 45°
self-resetting
Z 120° 90° 0° 30° 135° 90° 0° 45° 90°
type

Technical parameters

Model and specification LW42-20 LW42-25 LW42-32
Conventional heating current Ith A 20 25 32
Rated operating voltage Ue V 440 440 440
Rated operating current Ie
AC-23A A 15 20 25
AC-3 A 11 15 18

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