TB11 Series Thermal Protectors are high-power motor thermal protectors with a patent certificate. They offer high reliability and repeatability, precise temperature control, sensitive temperature sensing, compact structure, and a small size. Installation is versatile and easy, with a cantilever design that minimizes vibration and weak self-heating current effects, facilitating customer matching. Customized processing is available upon customer request. They are widely used in battery, lighting, transformers, high-power power supplies, fire-resistant cables, medical equipment, electric heating, and other fields.
Performance Parameters
| Rated Current/Voltage | 17A/DC12V、15A/DC24V、13A/AC115V、11A/AC250V |
Standard action temperature range and tolerance | 30℃ to 160℃ (5℃ increments), tolerance ±5℃ |
Standard reset temperature range and tolerance | 20℃ to 115℃, ±15℃ tolerance |
Outer Dimensions (Plastic) | 18.9mm(L)*7.0mm(W)*3.7mm(H) |
Dimensions (Metal) | 19.3mm(L)*6.5mm(W)*3.7mm(H) |
Standard Conductor Model | UL3135/AWG18#, Black Silicone Wire |
Dimensional drawing




































