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 of motors, transformers, coils, and electronic components. Its compact dimensions, shock and vibration resistance, and suitability for audio/video applications (EN 60065) make it a versatile solution. Available in normally closed (NC) and normally open (NO) configurations, these devices offer robust performance with a high number of switching cycles under rated and failure conditions.
Product Attributes
- Brand: Cantherm (Div. of Microtherm International Cooperation)
- Certifications: VDE / ENEC, UL, cUL, CQC
- Testing Standards: EN 60065, EN 60730-1 / -2-9, EN 50155, GB14536.1-1998 / GB14536.10-1996
- Protection Degrees: IP00 (provided by enclosures)
- Protection Categories: I, II
- Materials: PPS housing (G410 | 6), Aluminium housing (G700 | B)
- Leadframe versions available.
- Tested for audio, video applications.
- Resistant to impregnation.
Technical Specifications
| Feature | 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 | 3,000 | 3,000 | 3,000 |
| Temperature Rating Ta (steps in 5 K) | 70 C ... 190 C | 70 C ... 185 C | 70 C ... 185 C | 70 C ... 190 C |
| Tolerance (standard) | 5 K | |||
| Feature of Automatic Action | 1.B, 2.B.M, 1.C | 2.B, 1.C | 2.B, 1.C | 1.B, 2.B.M, 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 | 400 m/s sine half wave / 100 m/s 5 Hz ... 2,000 Hz sine | |||
| UL File Number | E46827 | E46827 | E46827 | E46827 |
| C22.2 No. | 77 / 24 | 77 / 24 | 77 / 24 | 77 / 24 |
| GB14536.1-1998 / GB14536.10-1996 | 3) | 3) | 3) | 3) |
Additional Technical Data (Cantherm Lead)
| Cantherm Code | Max. Operating Voltage | Diameter | Insulation Cross Section | UL Style | Max. Temperature |
|---|---|---|---|---|---|
| ACFA | 300 V | 1.57 mm | AWG24 / 0.24 mm | 3266/3398 | 150 C |
| AEFC | - | 1.80 mm | AWG20 / 0.48 mm | - | - |
| KCFA | 600 V | 1.2 mm | AWG24 / 0.25 mm | 10086 | 200 C |
| KEFA | - | 1.6 mm | AWG20 / 0.50 mm | 3266/3398 | 150 C |
| ASFA | 300 V | 1.65 mm | AWG20 / 0.81 mm | - | - |
| DCFB | 300 V | 1.21 mm | AWG24 / 0.51 mm | 1180 | 200 C |
| DEFB | - | 1.51 mm | AWG20 / 0.81 mm | - | - |
Marking Example
F20A (Type) 120 (Response Temperature 120C) 05 (Tolerance 5K) L310 (Cantherm Code) 100 (Lead length 100mm) U254 (Specific variation)
2411041558_Cantherm-F20B15005DCFB06E_C17569956.pdf
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