We are a leading manufacturer and supplier of uninterruptible power supply systems, as well as remote monitoring and supervisory systems. We provide the full range of services, starting from the definition of customer needs, through analysis and design, to equipment delivery and system implementation. Additionally, we support our customers with aftersales service, consulting and training.

Telzas is a part of a dynamically growing ETC Group. Our solutions were successfully implemented in telecommunications, IT, Internet services, data transmission, energetics  


We offer the design & manufacture of power supply and supervisory systems adjusted to individual needs of the clients. Over 30-year experience and individual approach to each client enable us to produce solutions that meet the requirements of our customers.

We offes services in area of up to 1kV (AC or DC) on sites in different phases of realization (renovated, exploited, newly built) in area: designing and consulting of technical documentation, power supply systems (including hybrid solutions: PV panels, wind turbines), HVAC, AC and DC distributives, remote monitoring 


SDO power supply systems newly introduced to our range

Image thumbnail

We have introduced a new product line: the SDO power supply systems based on high-efficient PDO 48/42-2000W rectifiers. This new rectifier offers 2kW power at the height of 1U.
With this technologically advanced module, we are able to design DC power systems with smaller size and weight. more icon


Image thumbnail

We were pleased to welcome you at our booth at the ANGA COM 2015 exhibition and hope that we have piqued your interest in our latest product highlights.

We presented the newest Telecom DC power supply systems... more icon

New products

Racks and cabinets

We have introduced a new product lines in our offer: SW indoor cabinets, SZ outdoor cabinets and TMPL racks for energy and telecommunications systems. Click to view more information.

5800W high-efficiency rectifiers

High-efficient PDG 48/120-5800W-02 rectifier module available now! Maximum efficiency of 96.2% reduce the cost of energy as well as heat dissipation on sites. See detailed information in the datasheet of SDG 2400