2
AREAS OF APPLICATION
Temperature regulation, temperature monitoring,
temperature limiting and indication in electric
appliances and industrial equipment, machinery
and process engineering.
Examples:
Vacuum cleaners
Electrical house-
Ironing machines
hold appliances
Cooking equipment
Electronic circuits
Dampers
Machinery
Heat radiators
Process engineering
Hot water heaters
Industrial electric
Coffee machines
elements
Egg boilers
Electrical components
Electric appliances
RESET TEMPERATURES
Reset temperature will be between 5 °C and
50 °C below the standard response temperatures.
INSTALLATION/MOUNTING INFORMATION
Incorporation of the thermo-switch directly in the
heat source or attachment to it, is possible without
additional insulation.
Slightest changes in temperature are conducted
through the metallic housing cap directly to the
bimetal snap disc of the thermo-switch. This ensu-
res that time delays of thermal control systems
are kept very small: insensitive to installation posi-
tion. The dust-proof and damp-proof construction
of the thermo-switch allows various methods of
attachment to, and incorporation in appliances.
To ensure the best heat transition, the cap respec-
tively the mounting bracket should be soldered,
rivetted, screwed or spot-welded to the heat
source.
RESPONSE TEMPERATURE, TOLERANCE,
CODE-NO.
Nominal temperatures between 50 and 160 °C
in 5 °C steps.
Nominal temperatures in geometrical series as per
DIN 323 in °C.
For tolerance, see above – Technical Data.
Temperature code – 3 digits
Minimum rate of temperature change
0.1 K/min., max. 1.0 K/min.
Type
R 20 and R 22
R 30 and R 32
R 40
Voltage rating
* 250 V 50–60 Hz
250 V 50–60 Hz
* 250 V 50–60 Hz
Current rating at cos
j = 1.0
* 10.0 A / * 16.0 A
16.0 A
* 10.0 A
Current rating at cos
j = 0.6
6.3 A
6.3 A
* 6.3 A
Max. load
at cos
j = 1,0
250 V 50–60 Hz
16.0 A / 20.0 A
20.0 A
16.0 A
110 V 50–60 Hz
60 V DC
6.0 A
6.0 A
42 V DC
7.2 A
7.2 A
6, 12, 24 V DC
8.5 A
8.5 A
Contacts
Normally closed
Normally open
* 10 000
* 200
* 30 000
0–170 °C / 16 A
Switch operations at IN
–
* 100 000
50–160 °C / 10 A
Contact resistance
< 50 m
½
< 50 m
½
< 50 m
½
Nominal temperature range
0 °C to + 170 °C
+30 °C to + 160 °C
+ 50 °C to + 160 °C
Tolerance
±3 % ± 6% ±10%
± 3 % ± 6% ±10%
± 3 % ± 6% ±10%
but at least
± 3 K ±5 K ± 10 K
± 3 K ±5 K ± 10 K
± 3 K ±5 K ± 10 K
Max.permanent temperature
* 175 °C
* 175 °C
* 175 °C
Dielectric strength
R 20: 3000 Veff 50–60 Hz
R 30: 3000 Veff 50–60 Hz
Housing to earth
R 22: 4000 Veff 50–60 Hz
R 32: 4000 Veff 50–60 Hz
3000 Veff 50–60 Hz
Dielectric strength
across open contacts
1500 Veff 50/60 Hz
1500 Veff 50/60 Hz
1500 Veff 50/60 Hz
Housing material
Duroplast
Duroplast
Duroplast
Housing
insulation
on request
on request
on request
Overall height (mm)
R 20
9.5+0.2
R 30 9.5+0.2
R 40 12.0+0.2
R 22 11.5+0.2
R 32 11.5+0.2
TECHNICAL DATA
Note: * Approved nominal values. Other specific values on request.
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