In industrial automation and equipment safety, temperature control plays a critical role. Overheating not only reduces efficiency but can also lead to severe damage or safety incidents. The challenge lies in implementing reliable temperature monitoring and protection in a cost-effective manner. WIKA's TFS35 series temperature switch addresses this need with its compact design and robust functionality.
The TFS35 series is a bimetallic temperature switch designed for applications with switching voltages up to 48V. Its primary advantage lies in its self-sufficient operation—requiring no external power source—while providing current-independent switching action through bimetallic technology. This design simplifies installation and maintenance while enhancing reliability.
Common applications include temperature limitation and monitoring in mechanical systems, where it can shut down equipment or activate cooling fans when overheating occurs. Typical use cases span mobile hydraulic systems, machinery manufacturing, compressors, motors, and heating/cooling systems.
At the heart of the TFS35 lies its bimetallic strip—a composite of two metals with different thermal expansion coefficients. Temperature changes cause differential expansion, making the strip bend. When reaching the preset nominal switching temperature (NST), this triggers the switching action. Upon cooling to the reset switching temperature (RST), typically 15-30K below NST, the switch returns to its original state.
Unlike current-carrying bimetallic designs, the TFS35's strip carries no electrical current, eliminating self-heating effects that could cause false triggers. The built-in hysteresis prevents rapid cycling near threshold temperatures, extending operational life.
The switch offers two contact configurations:
Key operational parameters include:
Proper implementation ensures optimal performance:
Key considerations when specifying TFS35 models:
Compared to electronic alternatives, the TFS35 offers:
Limitations include fixed temperature settings and lower precision compared to electronic sensors—tradeoffs that suit many industrial protection scenarios.
Proven implementations include:
Industry trends point toward:
The TFS35 represents a robust, economical solution for industrial temperature protection. Its mechanical reliability and straightforward implementation make it particularly valuable in cost-sensitive applications where dependable overheating protection remains paramount.
In industrial automation and equipment safety, temperature control plays a critical role. Overheating not only reduces efficiency but can also lead to severe damage or safety incidents. The challenge lies in implementing reliable temperature monitoring and protection in a cost-effective manner. WIKA's TFS35 series temperature switch addresses this need with its compact design and robust functionality.
The TFS35 series is a bimetallic temperature switch designed for applications with switching voltages up to 48V. Its primary advantage lies in its self-sufficient operation—requiring no external power source—while providing current-independent switching action through bimetallic technology. This design simplifies installation and maintenance while enhancing reliability.
Common applications include temperature limitation and monitoring in mechanical systems, where it can shut down equipment or activate cooling fans when overheating occurs. Typical use cases span mobile hydraulic systems, machinery manufacturing, compressors, motors, and heating/cooling systems.
At the heart of the TFS35 lies its bimetallic strip—a composite of two metals with different thermal expansion coefficients. Temperature changes cause differential expansion, making the strip bend. When reaching the preset nominal switching temperature (NST), this triggers the switching action. Upon cooling to the reset switching temperature (RST), typically 15-30K below NST, the switch returns to its original state.
Unlike current-carrying bimetallic designs, the TFS35's strip carries no electrical current, eliminating self-heating effects that could cause false triggers. The built-in hysteresis prevents rapid cycling near threshold temperatures, extending operational life.
The switch offers two contact configurations:
Key operational parameters include:
Proper implementation ensures optimal performance:
Key considerations when specifying TFS35 models:
Compared to electronic alternatives, the TFS35 offers:
Limitations include fixed temperature settings and lower precision compared to electronic sensors—tradeoffs that suit many industrial protection scenarios.
Proven implementations include:
Industry trends point toward:
The TFS35 represents a robust, economical solution for industrial temperature protection. Its mechanical reliability and straightforward implementation make it particularly valuable in cost-sensitive applications where dependable overheating protection remains paramount.
