How does a thyristor controller work and what is it used for?

Thyristor controllers are devices used to regulate the power supplied to electrical receivers, such as heaters, heaters, or resistors. Their task is to precisely control voltage, current, or power, depending on the selected operating mode.

The models in the JUMO TYA HL series enable control according to various parameters:

• voltage (U),
• current (I),
• active power (P),
• square voltage (U²),
• square current (I²).

This allows them to be used in applications with both linear and non-linear loads. Built-in functions such as data logging and oscilloscope support process monitoring and increase operational reliability.

JUMO thyristor controllers are available in single-phase and three-phase versions with different load types, allowing you to select the configuration that best suits your specific power supply system.

What are the differences between single-phase thyristor controllers for non-linear loads, three-phase controllers in an economical configuration, and three-phase controllers for non-linear loads?

The JUMO TYA HL family of thyristor power controllers has been designed for precise control of heating processes in various power supply configurations. Although all models offer a similar range of currents (300–800 A), voltages (230–690 V), and functions, their key difference lies in the type of phase system and the type of loads they support.

JUMO TYA HL301 – single-phase thyristor controller for non-linear loads

The TYA HL301 model is a single-phase thyristor controller that is ideal for applications where the power supply and receiver are single-phase and the load is non-linear (e.g., heaters with inductive elements or variable power factor).

The device enables digital power control in the following modes: voltage (U), current (I), power (P), and square (U², I²). Thanks to its compact design and top-to-bottom cabling, it is ideal for applications where space savings in the control cabinet are important.

JUMO TYA HL302 – three-phase thyristor controller in an economical configuration

The TYA HL302 model operates in a two-phase three-phase control system, which means that only two of the three phases are controlled, allowing for cost reduction while maintaining power control in resistive load applications.

This solution is suitable for installations where full power symmetry is not required or where actuators tolerate asymmetry. It retains all the features common to the series: data logging, built-in oscilloscope, and integration via Modbus RTU, PROFINET, EtherCAT, and other interfaces.

JUMO TYA HL303 – three-phase thyristor controller for non-linear loads

The TYA HL303 model is a full three-phase thyristor controller, designed for use with non-linear loads in demanding process conditions. Thanks to its uniform control of three phases, it is ideal for applications that require high stability and precision, such as large furnaces, induction heaters, or installations with non-standard heating elements.

Like other models, it offers a wide range of control modes, load management for up to 24 zones (optional), and an intuitive operating panel with access to settings and process data.

In which applications are single-phase and three-phase thyristor controllers effective?

The selection of a suitable thyristor power controller depends not only on the power or type of load, but also on the characteristics of the power supply in a given installation. The individual models of the JUMO TYA HL series have been designed for various industrial applications, which means that they are suitable for specific actuator systems.

JUMO TYA HL301 single-phase controller

Suitable for applications with a simple power supply system and non-linear loads, e.g.:

• ferromagnetic core heaters,
• devices with large impedance changes during heating,
• single heating zones with low power,
• modernization of local heating systems.

JUMO TYA HL302 two-phase controller

This is an intermediate solution, recommended for:

• applications with higher power resistive loads,
• furnaces and heaters where two of the three phases can be controlled,
• installations where cost optimization without loss of functionality is key,
• systems where power supply asymmetry is acceptable.

JUMO TYA HL303 three-phase controller

Recommended for the most demanding industrial applications, such as:

• industrial furnaces with high power consumption,
• heating processes with non-linear or time-varying loads,
• systems requiring precise, symmetrical power control in three phases,
• heating zones in production lines where power stability and reliability are essential.

With three variants of the JUMO TYA HL controllers, you can choose a solution that meets both the technical and economic requirements of your plant—without compromising on functionality.

How to choose the right controller for your application? Comparison at a glance

ModelPower supply systemLoad typeControlled phasesApplicationsCommentsTYA HL301

Single-phaseNon-linearPhase 1Ferromagnetic core heaters, local heating systemsCompact, for simple installations

TYA HL302

Three-phase (2-phase system)Resistive2 out of 3 phasesFurnaces, heaters, industrial applications with permissible asymmetryEconomical three-phase solution

TYA HL303

Three-phaseNon-linear or mixedAll 3 phasesHeating lines, industrial furnaces, applications requiring precisionMaximum power supply stability and symmetry

Do you need power control tailored to your application?

JUMO TYA HL301, HL302, and HL303 thyristor controllers give you the freedom to choose the right solution—from compact single-phase installations to advanced three-phase systems with non-linear loads. Each model combines communication flexibility, ease of integration, and features that support reliability and energy efficiency.

Not sure which option best suits your application's needs?
Contact our team – we will help you choose the right power controller.

Aboutthe author

My name is Natalia and I specialize in content creation. For three years, I have been professionally sculpting words as an editor and copywriter. My mission is to break down even the most complex issues into their constituent parts. I focus on building relationships with readers and creating experiences. Privately, I am a lover of travel, literature, and fashion.

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