Maintenance teams planning replacements for TC203AX frequently review Selec Timer, Masibus Temperature Controller and Selec Tc533Bx to prevent downtime, checking availability and compatibility with existing systems.
Selec TC203AX Temperature Controller
The Selec TC203AX Temperature Controller features a single 7-segment LED display and supports thermocouple or RTD inputs for industrial temperature monitoring. It provides a fixed 1Β° resolution, includes relay or SSR control output, and operates on a 90 to 270V AC/DC supply. Designed with a 72 x 72mm panel-mount structure, it fits standard industrial control panels effectively. Manufactured by Selec, this model appears under the Selec Temperature Controller category and belongs to the TC Series.

| Brand | Selec |
| Product Type | Temperature Controller |
| Model Number | TC203AX |
Selec TC203AX Temperature Controller β Technical Specifications
| Specification | Value |
|---|---|
| Display Type | 7 Segment LED, Single Display |
| Display Configuration | 3 Digits |
| Type of Input | Thermocouple (J,K,T,R,S) / RTD (PT100) |
| Resolution | Fixed 1Β° |
| Accuracy | For TC (J, K, T) inputs: 0.25% of F.S. Β± 1 Β°: For R & S inputs: 0.5% of F.S. Β±2 (20min of warm up time) For RTD inputs: 0.1% of F.S Β±1 |
| Control Output | RELAY or SSR. |
| Control mode | Auto Tune PID / ON-OFF |
| Supply Voltage | 90 to 270V AC/DC |
| Size | 72 x 72mm |
| Mounting Type | Panel Mount |
The Selec TC203AX Temperature Controller provides steady temperature measurement and regulation for industrial automation systems. This controller features a single 7-segment LED display, supports thermocouple J, K, T, R, S and RTD PT100 inputs, and maintains a fixed 1Β° resolution for consistent temperature control. As a member of the TC Series from Selec, it integrates smoothly into control panels across manufacturing and process environments.
This model is commonly applied in conveyors, packaging machines, assembly equipment, and general heating or cooling operations. The relay or SSR output enables flexible integration with switching devices and heaters, while the wide 90 to 270V AC/DC supply range supports varied industrial electrical conditions. Its 72 x 72mm panel mounting ensures reliable installation in standard automation cabinets.
The Selec TC203AX Temperature Controller offers reliable performance suited for continuous industrial temperature regulation. With features including its single LED display, multi-sensor compatibility, and output flexibility, it supports stable operation in automated systems. Selecβs strong reputation in industrial instrumentation reinforces confidence in this model for long-term temperature control applications.







