Home > Products > F13, F20, F23 (Single Contacts)
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Protection For Coils / Windings

Thermal Cut-outs/Bimetal Thermostats

THE F11 IS NOW F20A or F20B

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.

F13, F20, F23 (Single Contacts)

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)

Technical Data

ratings F20A / E F13A F23A / E F20B / G
version normally closed normally open
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 ) < 50 mΩ
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/-2-9
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

Standard wire length 100 (MIC) | 150 (Cantherm) ± 10 mm, stripped 6 ± 1 mm

lead Cantherm
code
temp. max. operating
voltage max.
diameter insulation cross section diameter1 UL style
black ACFA 150° C 300 V 1.57 mm AWG24 / 0.24 mm2 3266
or
3398
yellow AEFC 1.80 mm AWG20 / 0.48 mm2
white LCFB 200° C 600 V 1.2 mm AWG24 / 0.25 mm2 10086
white LEFB 1.6 mm AWG20 / 0.50 mm2
black ASFA 150° C 300 V 1.65 mm AWG20 / 0.81 mm 3266
or
3398
white DCFB 200° C 300 V 1.21 mm AWG24 / 0.51 mm 1180
white DEFB 1.51 mm AWG20 / 0.81 mm
1)AWG24 is recommended    NOTE: Additional wires available upon request.

Standard insulation

control type nc no Cantherm code illust. drawing dimensions (mm) technicals specification approvals
F13
F20, F23
A U102 | B

different dimensions
for F20, F23

shrink cap
potted
VDE,UL, cUL
A B U106 | F
F13 A U198

different dimensions
for F20, F23

cap of PPS
potted
VDE, UL, cUL
F13, F23 A B U185

Specific variations U= insulation G= Housing

control type nc no Cantherm code illust. drawing dimensions (mm) technicals specification approvals
F13 A Insulation
None  |  0
not insulated
potted
VDE,UL, cUL
F23 A B Insulation
None  |  0
not insulated
potted
VDE,UL, cUL, CSA
F13 A Insulation
U112 |  L
epoxy coated VDE,UL, cUL
F20, F23 A B
F20, F23 E G Housing
G410 |  6Leads
A150 |  36
housing of PPS
leadframe leads
grid dimension 5.08
potted
VDE,UL, cUL, CSA
F13 A Leads
A800 |  IZA
not insulated
potted
VDE,UL, cUL
F23 A B
F20, F23 E G G700 | B aluminum housing
thread M4x6
pottedTa max. 150†C
VDE,UL, cUL, CSA
F13 A G410 | 6

Leads | ACFA

housing of PPS
potted
VDE,UL, cUL
F13 A A150 | 36 leadframe leads
grid dimension 5.08
epoxy coated
VDE,UL, cUL, CSA
F20, F23 A B U112 | L

Heating by current

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 [ F20A12005ACFA06E ]
F20 A 120 5 AC F A 0 6 E
type normally closed Temp. tolerance +/-5°C wire leads UL3398 24 AWG lead length F=6″ color black no insulation housing – G410 E06 strip .25″
Cantherm Marking Example
F20A type (F20 nc)
12005 response temperature (120°C), tolerance (± 5K)
112C date of manufacture (Nov. 2012), country (C = Canada)