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Back to Thermal Cutouts |
Protection
For Coils / Windings
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F11, F20, F21 (Single Contacts)
> Online Tech Info
This thermostat operates as a thermal
cutout. A thermally sensitive bimetal snap-element
with single contacts either opens or closes an electrical
circuit by switching at a pre-set response temperature.
Reset follows automatically after a considerable drop
in temperature.
(F11,
F20, F21) >
PDF Tech Info
|
Applications
Single Phase Motors,
Generators, Convertors, Transformers, Pumps, Heating
Elements, Signal Transmitters, Fire Detectors, Magnets,
Relays, Chokes, Coils, Power Supplies, Inverters
Benefits
- Small dimensions, 4 mm high only
- Shock- and vibrations tested
- Leadframe version
- Tested for audio, video applications (EN 60065)
|
| >
Technical Data |
| ratings |
F11A
/ E
F20A / E |
F20B
/ G |
F21A
/ E |
| version |
normally
closed |
normally
open |
normally
closed |
| rated
current at 250 V 50/60 Hz (power factor 0.95/0.6) |
2.0
A / 1.6 A |
2.0
A / 1.6 A |
3.0
A / 3.0 A
|
6.3
A / 1.0 A |
switching
cycles |
10,000
|
10,000 |
700 |
| max.
current at 250 V 50/60 Hz (power factor 0.95) |
6.3
A |
8.0
A |
switching
cycles under max. current |
100
|
| temperature
rating Ta (steps in 5 K) |
70ºC...160ºC |
70ºC...155ºC |
70ºC...160ºC |
tolerances |
standard:+/-
5 K |
| feature
of automatic action |
1.B, 2.B.M, 1.C, 3.C
|
2.B,
1.C |
contact
resistance ( incl. wire of 100 mm ) |
<
50 m |
| hysteresis |
30
K ± 15 K
|
dielectric
strength ( standard insulation ) |
2
kV |
| shock-
/ vibration testing ( similar to EN 50155 ) |
400
m/s2 sine half wave / 100 m/s2 5 Hz ... 2,000 Hz sine |
resistances
to impregnation |
tight
against ordinary resins and lacquers
|
| degrees
of protection provided by enclosures ( EN 60529 ) |
IP00
|
suitable
for use in protection category |
I,
II |
|
approvals |
VDE
/ ENEC |
EN
60730-1 / -2-2 / -2-3 1) /-2-9 |
UL |
UL
2111 / UL 873
|
| CSA |
C22.2
No. 77 / C22.2 No. 24 2) |
1)
different power rating
2) on demand |
| >
Standard wire ( length 100 ± 10
mm, stripped 6 ± 1 mm ) |
| lead |
code |
temp.
max. |
operating
voltage max. |
diameter
insulation |
cross
section diameter |
UL
style |
stranded
white |
L300 |
150°
C |
300
V |
1.57
mm |
AWG24
/ 0.21 mm2 |
3398 |
L310 |
1.80
mm |
AWG20
/ 0.48 mm2 |
| L330 |
200°
C |
600
V |
0.90
mm |
AWG24
/ 0.24 mm2 |
3557 |
solid
yellow |
L400 |
150°
C |
300
V |
1.40
mm |
AWG24
/ 0.51 mm |
3398 |
L410 |
1.65
mm |
AWG20
/ 0.81 mm |
| L430 |
200°
C |
300
V |
1.21
mm |
AWG24
/ 0.51 mm |
1332 |
| L440 |
1.71
mm |
AWG20
/ 0.81 mm |
| >
Standard insulation |
| control
type |
nc |
no |
code |
illust. |
drawing
dimensions (mm) |
technicals
specification |
approvals |
|
F11,
F21
|
A
|
B |
U254 |
|
different dimensions
for F20, F21 |
shrink
cap
potted
Ta max. 155ºC |
VDE,UL |
F20 |
A |
|
| F11 |
A |
|
U198 |
|
different
dimensions
for F20, F21
|
cap
of PPS potted |
VDE,
UL |
| F20
|
A
|
|
U185 |
| F21 |
A |
B |
| >
Specific variations |
| control
type |
nc |
no |
code |
illust. |
drawing
dimensions (mm) |
technical
specification |
approvals |
F11 |
A |
|
|
|
|
not
insulated
potted |
VDE,UL,
CSA |
| F20 |
A |
|
|
|
|
not
insulated
potted |
VDE,UL,
CSA |
F21 |
A |
|
| F11,
F21 |
A |
B |
U112 |
|
different dimensions
for F20, F21 |
coated |
VDE,UL |
F20 |
A |
|
| F20 |
A |
|
A150
U280 |
|
|
housing
of PPS
leadframe leads
grid dimension 5.08
potted |
VDE,UL |
F21 |
A |
|
F11,
F21
|
A
|
|
A800 |
|
different dimensions
for F20, F21 |
not
insulated
potted |
VDE,UL |
F20 |
A |
B |
|
F20 |
E |
|
G700 |
|
|
aluminum
housing
thread M4x6
potted
Attention: Ta max. 150ºC |
VDE,UL |
F21 |
E |
|
F11 |
A |
|
U281 |
|
|
housing
of PPS
potted |
VDE,UL |
| F11,
F21 |
A |
B |
A150
U112 |
|
different dimensions
for F20, F21 |
leadframe
leads
grid dimension 5.08
coated |
VDE,UL |
F20 |
A |
|
The diagram is measured with a thermal control without
any insulation in an oil bath.
Attention:
The heating depends on the thermal conduction of the
control to the equipment or part which should be
protected. |
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|
Thermal
Cutouts
8415
Mountain
Sights Avenue, Montreal (Quebec), H4P 2B8 Canada
