Product Overview
The Cantherm Thermal Motor Protector, also known as a Temperature Limiter or Thermal Cut-out, is designed for reliable overcurrent and overtemperature protection in various electrical components. Its compact dimensions, shock and vibration resistance, and suitability for audio/video applications (EN 60065) make it ideal for motors, transformers, coils, and electronic sensors. Available in normally closed and normally open configurations, these protectors offer robust performance with tested switching cycles and high dielectric strength.
Product Attributes
- Brand: Cantherm (Div. of Microtherm International Cooperation)
- Certifications: VDE / ENEC, UL, cUL, CQC
- Testing Standards: EN 60065, EN 50155, EN 60730-1 / -2-9, GB14536.1-1998 / GB14536.10-1996
- Protection Categories: I, II
- Degrees of Protection: IP00 (provided by enclosures)
- Resistances: Tight against ordinary resins and lacquers
Technical Specifications
| Specification | F13A / E | F20A / E | F23A / E | F20B / G |
|---|---|---|---|---|
| Control Type | Normally Closed | Normally Closed | Normally Closed | Normally Open |
| Rated Current at 250 V 50/60 Hz (PF 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 (PF 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 ... 190 C | 70 C ... 185 C | 70 C ... 185 C | 70 C ... 185 C |
| Tolerance (Standard) | 5 K | 5 K | 5 K | 5 K |
| Feature of Automatic Action | 1.B, 2.B.M, 1.C | 2.B, 1.C | 2.B, 1.C | 2.B, 1.C |
| Contact Resistance (incl. wire of 100 mm) | < 50 m | < 50 m | < 50 m | < 50 m |
| Hysteresis | 30 K 15 K | 30 K 15 K | 30 K 15 K | 30 K 15 K |
| Dielectric Strength (Standard Insulation) | 2 kV | 2 kV | 2 kV | 2 kV |
| Shock / Vibration Testing | 400 m/s sine half wave / 100 m/s 5 Hz ... 2,000 Hz sine | |||
Additional Technical Data & Lead Options
| Cantherm Code | Max. Operating Voltage | Max. Diameter | Insulation Cross Section | UL Style | Color |
|---|---|---|---|---|---|
| ACFA | 300 V | 1.57 mm | AWG24 / 0.24 mm | 3266/3398 | Black |
| AEFC | 600 V | 1.80 mm | AWG20 / 0.48 mm | - | Yellow |
| KCFA | 600 V | 1.2 mm | AWG24 / 0.25 mm | 10086 | Black |
| KEFA | 300 V | 1.6 mm | AWG20 / 0.50 mm | 3266/3398 | Black |
| ASFA | 300 V | 1.65 mm | AWG20 / 0.81 mm | - | Black |
| DCFB | 300 V | 1.21 mm | AWG24 / 0.51 mm | 1180 | White |
| DEFB | 300 V | 1.51 mm | AWG20 / 0.81 mm | - | White |
Marking Example
F20A 120 05 L310 100 U254
- F20A: Type (F20 nc)
- 120: Response Temperature (120C)
- 05: Tolerance ( 5K)
- L310: Wire Leads (UL3398 24 AWG)
- 100: Lead Length (100 mm)
- U254: Other specifications
2411041558_Cantherm-F20A125053600060_C17618985.pdf
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