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 


ANGA COM 2018 - invitation

Image thumbnail

We sincerely invite you to visit our booth at the ANGA COM 2018 - Exhibition and Congress for Broadband, Cable & Satellite.
During the event we will present leading solutions in the field of broadband sector. more icon

New WSZ systems in Telzas offer

Image thumbnail

Telzas has released a new multi-voltage WSZ supply systems designed to supply the 48VDC and 230VDC loads.

WSZ multi-voltage power systems integrates rectifier and inverter modules into a single enclosure. more icon

New products



We have introduced a new DC & AC UPS systems in our offera. Click to view more information.

New racks and cabinets


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