Selec TC303AX Single Display, Relay / SSR Output 96X96 mm
The TC303AX is a Selec Single Display, Relay / SSR output 96X96 mm controller featuring 7-segment LED display and relay/SSR control output. Manufactured by Selec, the TC303AX temperature controller belongs to the Selec Temperature Controller category and is part of the TC Series. It supports thermocouple (J, K, T, R, S) and RTD PT100 inputs, provides fixed 1° resolution with Auto Tune PID or ON-OFF control mode, operates on 90–270V AC/DC supply, and installs using a 96 × 96 mm panel mount design.

| Brand | Selec |
| Product Type | Temperature Controller |
| Model Number | TC303AX |
Selec TC303AX Single Display, Relay / SSR Output 96X96 mm - 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 1° |
| Accuracy | For TC (J, K, T) inputs: 0.25% of F.S. ± 1: For R & S inputs: 0.5% of F.S. ±2 (20min of warm up time) For RTD inputs: 0.1% of F.S ±1 |
| Control Output | RELAY or SSR. |
| Control mode | Auto Tune PID / ON-OFF |
| Supply Voltage | 90 to 270V AC/DC |
| Size | 96 x 96mm |
| Mounting Type | Panel Mount |
The TC303AX Selec Single Display, Relay / SSR output 96X96 mm temperature controller is designed for temperature monitoring and regulation in industrial automation systems. The TC303AX features a 7-segment LED display, supports thermocouple or RTD input, and provides relay or SSR control output for integration with process control equipment. As part of the Selec TC Series, the controller maintains temperature regulation using fixed 1° resolution and reliable control logic. The Selec TC303AX device is widely used in industrial panels requiring stable temperature supervision.
The TC303AX Selec Single Display, Relay / SSR output 96X96 mm controller is commonly installed in conveyors, packaging machinery, assembly equipment, and industrial heating processes. Operators observe the LED display to monitor process temperature and maintain stable production conditions. The panel mount structure allows installation within machine control cabinets and electrical panels. With compatibility for thermocouple and RTD sensors, the TC303AX temperature controller supports temperature monitoring across automated production systems and equipment.
The TC303AX Selec Single Display, Relay / SSR output 96X96 mm controller remains suitable for industrial temperature monitoring and regulation tasks. With features such as 90–270V AC/DC supply, 96 × 96 mm panel mounting, and PID or ON-OFF control modes, the TC303AX supports dependable operation within machine control systems. As a member of the Selec TC Series, the controller integrates easily into industrial automation panels. Selec temperature controllers are widely used across manufacturing environments where stable thermal control is required.







