AUMA SAR 12 User Manual

Micro Switches
Single and Tandem Micro Switches
Micro Switch Ratings
Limit and Torque Switches are available in
single or tandem versions.
Control Equipment
Limit switches are tripped when an end position
is reached and torque switches are tripped when
The micro switches are sealed to enclosure
protection class IP66, as per IS 13947. The micro
switches have double break change over
potential free contacts. The circuit is interrupted
simultaneously at two points. The basic versions
of the switch contacts are of silver. For low
current ratings, micro switches with gold plated
the set tripping torque is exceeded.
contacts are available.
Type of Switch
Blinker
DC inductive
DC resistive
Limit and
Torque
Type of
Current
Rating in Amp at
Approx. Electrical
contact rating
500,000 cycles at
250 V AC, 5A
50,000 cycles at
250 V DC, 0.1A
50,000 cycles at
250 V DC, 0.25A
30 V
8
5
7
7
1
1
6
0.2
0.5
5
0.1
0.25
4
75 V
125 V 250 V
AC, cos O = 0.8
Inductive
AC, cos O = 0.8
Inductive
With the help of micro switches, mechanical
parameters such as travel & torque are
converted into electrical signals for actuator
control. There are four switches in the basic
version :
positions OPEN and CLOSE
directions OPEN and CLOSE.
One torque switch each for the
One limit switch each for the end
Limit or Torque Switches in tandem version
have additional switching contacts. These
contacts can be wired for following applications :
Single Micro Switch
Tandem Micro Switch
11
Switching another circuit also with
Safety function, to operate with single
Multiplying the available contacts,
different voltage & current
switch
example for signalization.
points of tandem switches.
For such applications, a relay is recommended
since there may be small differences in tripping

AUMA SAR 12 Specifications

General

Brand	AUMA
Model	SAR 12
Category	Controller
Language	English