Selec DTC503 Single Set Point, Relay/SSR Output, 48X48 mm
The DTC503 is a Selec Single Set Point, Relay/SSR Output, 48X48 mm controller featuring 7-segment LED dual display and 10A relay/12V SSR output. Manufactured by Selec, the DTC503 temperature controller belongs to the Selec Temperature Controller category and is part of the TC Series. It supports thermocouple (J, K) or RTD PT100 inputs, provides fixed 1° resolution with 0.25% accuracy, operates on 90–270V AC/DC supply, and installs using a 48 × 48 mm panel mount format.

| Brand | Selec |
| Product Type | Temperature Controller |
| Model Number | DTC503 |
Selec DTC503 Single Set Point, Relay/SSR Output, 48X48 mm - Technical Specifications
| Specification | Value |
|---|---|
| Display Type | 7 Segment LED Dual Display |
| Display Configuration | 3 Digits |
| Type of Input | Thermocouple (J,K) or RTD (PT100) |
| Resolution | Fixed 1° |
| Accuracy | 0.25% of F.S ±1ºC (20 min warm up time) |
| Output | 10A Relay / 12V SSR |
| Supply Voltage | 90 to 270V AC/DC |
| Size | 48 x 48mm |
| Mounting Type | Panel Mount |
The DTC503 Selec Single Set Point, Relay/SSR Output, 48X48 mm temperature controller is designed for temperature monitoring and regulation in industrial automation systems. The DTC503 provides a 7-segment LED dual display, accepts thermocouple or RTD inputs, and offers 10A relay or 12V SSR output for integration with heating and process control equipment. As part of the Selec TC Series, the controller supports reliable temperature measurement with fixed 1° resolution. The Selec DTC503 device is commonly installed in industrial panels where stable temperature monitoring is required.
The DTC503 Selec Single Set Point, Relay/SSR Output, 48X48 mm controller is commonly used in conveyors, packaging systems, assembly equipment, and industrial heating processes. Operators monitor the LED display to track process temperature and maintain controlled operating conditions. The panel mount structure allows installation in machine control cabinets and electrical panels. With compatibility for thermocouple and RTD sensors, the TC controller supports temperature monitoring across production lines and automation equipment where thermal regulation is necessary.
The DTC503 Selec Single Set Point, Relay/SSR Output, 48X48 mm controller remains suitable for industrial temperature monitoring and regulation. With features such as 90–270V AC/DC supply, 48 × 48 mm panel mounting, and 0.25% measurement accuracy, the DTC503 supports dependable performance in machine control systems. As a member of the Selec TC Series, the device integrates easily with industrial automation infrastructure. Selec temperature controllers are widely used across industrial facilities where consistent thermal control and process stability are required.







