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Back to Thermal Cutouts |
Protection
For Coils / Windings
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|
 The
F11U is now F20A
F11, F12, F20, F21
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.
|
Applications
Single Phase Motors,
Generators, Convertors, Transformers, Pumps, Heating
Elements, Signal Transmitters, Fire Detectors, Magnets,
Relays, Chokes, Coils, Power Supplies, Inverters
Benefits
- Small dimensions
- Shock and vibration tested
- Leadframe version
- Tested for audio, video applications (EN 60065)
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| >
Technical Data |
| ratings |
F11A
F20A / E |
F12A1) |
F21A
/ E |
F20B
/ G
F21B / G |
| version |
normally
closed
code=2
|
normally
open
code=1 |
| rated
current at 250 V 50/60 Hz (power factor 0.95/0.6) |
2.0
A / 1.6 A |
3.0
A / 2.5 A |
3.0
A / 3.0 A
|
2.0
A / 1.6 A |
switching
cycles under rated current |
7,000
|
10,000 |
10,000 |
7,000 |
| max.
current under failure condition at 250 V 50/60 Hz
(power factor 0.95) |
4.0
A |
5.0
A |
4.0
A |
switching
cycles under max. current |
3,000
|
| temperature
rating Ta (steps in 5 K) |
70†C...160†C
|
70†C...155†C |
tolerances |
standard:+/-
5 K |
| feature
of automatic action |
1.B, 2.B.M, 1.C
|
2.B,
1.C |
contact
resistance ( incl. wire of 100 mm ) |
|
| hysteresis |
30
K ± 15 K2
|
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 / -2-3 3) /-2-9 |
UL |
UL
2111 / UL 873 1)
|
CSA
/ cUL |
C22.2
No. 77 / C22.2 No. 24 1) |
|
CQC |
GB14536.1-1998
/ GB14536.10-1996 1) |
1)
details on request
2) at the Ta (upper and lower)
limits the hysteresis could deviate
3) different power rating |
| >
Standard wire length
100 (MIC) | 150 (Cantherm)
± 10 mm, stripped 6 ± 1 mm |
| lead |
Cantherm
code |
MIC
code |
temp.
max. |
operating
voltage max. |
diameter
insulation |
cross
section diameter1 |
UL
style |
black |
ACFA |
L300 |
150°
C |
300
V |
1.57
mm |
AWG24
/ 0.24 mm2 |
3398 |
yellow |
AEFC |
L310 |
1.80
mm |
AWG20
/ 0.48 mm2 |
white |
LCFB |
L330 |
200°
C |
600
V |
0.90
mm |
AWG24
/ 0.24 mm2 |
3557 |
white |
LEFB |
L340 |
1.26
mm |
AWG20
/ 0.61 mm2 |
yellow |
|
L400 |
150°
C |
300
V |
1.40
mm |
AWG24
/ 0.51 mm |
3398 |
black |
ASFA |
L410 |
1.65
mm |
AWG20
/ 0.81 mm |
yellow |
DCFB |
L430 |
200°
C |
300
V |
1.21
mm |
AWG24
/ 0.51 mm |
1180 |
yellow |
DEFB |
L440 |
1.51
mm |
AWG20
/ 0.81 mm |
| 1)
AWG24
is recommended |
| >
Standard insulation |
| control
type |
nc |
no |
Cantherm
code |
MIC
code |
illust. |
drawing
dimensions (mm) |
technicals
specification |
approvals |
| |
A |
|
U102
| B |
U254 |
|
different dimensions
for F20, F21 |
shrink
cap
potted |
VDE,UL,
cUL |
| A |
B |
U106
| F
|
| F11,
F12 |
A |
|
U198 |
U198 |
|
different
dimensions
for F20, F21
|
cap
of PPS
potted |
VDE,
UL, cUL |
| F20,
F21
|
A
|
B |
U185 |
U185 |
| >
Specific variations U= insulation G=
Housing |
| control
type |
nc |
no |
Cantherm
code |
MIC
code |
illust. |
drawing
dimensions (mm) |
technical
specification |
approvals |
F11,
F12 |
A |
|
Insulation
None | 0 |
|
|
|
not
insulated
potted |
VDE,UL,
cUL |
| F20,
F21
|
A |
|
Insulation
None | 0 |
|
|
|
not
insulated
potted |
VDE,UL,
cUL, CSA |
| F11,
F12 |
A |
|
Insulation
U112 | L |
U112 |
|
different dimensions
for F20, F21 |
epoxy
coated |
VDE,UL,
cUL |
F20,
F21 |
A |
B |
| F20,
F21 |
A |
|
Housing
G410 | 6
Leads
A150 | 36 |
A150
U280 |
|
|
housing
of PPS
leadframe leads
grid dimension 5.08
potted |
VDE,UL,
cUL, CSA |
F11,
F12 |
A |
|
Leads
A800 | IZA |
A800 |
|
different dimensions
for F20, F21 |
not
insulated
potted |
VDE,UL,
cUL |
F20,
F21 |
A |
B |
| F20,
F21
|
E |
|
G700
| B |
G700 |
|
|
aluminum
housing
thread M4x6
potted
Ta max. 150†C |
VDE,UL,
cUL, CSA |
F11,
F12 |
A |
|
G410
| 6
Leads | ACFA |
U282 |
|
|
housing
of PPS
potted |
VDE,UL,
cUL |
| F11,
F12 |
A |
|
A150
| 36 |
A150
U112 |
|
different dimensions
for F20, F21 |
leadframe
leads
grid dimension 5.08
epoxy coated |
VDE,UL,
cUL, CSA |
F20,
F21 |
A |
B |
U112 |
L
|
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. |
| >
Ordering & Marking Example |
| MIC
Ordering Example [ F20A12005L310100U54
] |
| F20 |
A |
120 |
05 |
L310 |
100 |
U254 |
| type |
normally
closed |
temperature |
tolerance
+/-5°C |
lead
wire white, AWG20 |
length
100 mm |
shrink
cap insulation |
| Cantherm
Ordering Example [ F2012025ACFA06E
] |
| F20 |
120 |
2 |
5 |
AC |
F |
A |
0 |
6 |
E |
| type |
temperature |
normally
closed |
tolerance
+/-5°C |
wire
leads UL3398 24 AWG |
lead
length
F=6" |
color
black |
no
insulation |
housing
- G410 E06 |
strip
.25" |
| Marking |
F20A
type (F20 nc)
12005 response temperature (120°C),
tolerance (± 5K)
049C date of manufacture (April
2009), country (C = Canada) |
|
|
Thermal
Cutouts
Canadian Thermostats & Control Devices Ltd.