Menu

Compact substations and distribution cabinets

As cities grow and energy networks expand, reliable power distribution needs to be both smarter and more space-efficient. Harju Elekter answers this demand with a comprehensive range of compact secondary substations and distribution cabinets designed for modern infrastructure and everyday reliability.

Our portfolio includes compact secondary substations and outdoor distribution cabinets built to perform in demanding conditions. These solutions help utilities and infrastructure partners deliver safe, efficient and long-lasting power distribution.

Compact secondary substations from Harju Elekter are delivered as turnkey CSS solutions and tailored to the specific requirements of utility companies, developers, EPC contractors, industrial facilities and wholesalers. Available across Europe, our compact secondary substations can be customized according to project scope, volume and technical specifications, making them a flexible choice for both standard and complex power distribution projects.

With a strong track record of successful installations in Estonia, Latvia, Finland, Sweden and Norway, Harju Elekter combines proven quality with deep regional expertise. This practical experience helps ensure smooth project delivery and reliable performance.

Our product line

Concrete Substations HEKA

Concrete Substations HEKA

Concrete substations HEKA C are delivered as fully integrated turnkey systems, engineered to meet the evolving needs of various end users. While utility companies remain the primary customers, CSS solutions are used by clients requiring new or expanding existing medium-voltage connections to the grid.

More details about Concrete Substations HEKA

Metal Substations HEKA

Metal Substations HEKA

Metal Substations HEKA compact substations (CSS) are delivered as fully integrated turnkey systems, making it easier to implement reliable medium-voltage grid connections with predictable quality and faster project execution. Designed for modern power distribution needs, they provide a robust foundation for utilities and other operators upgrading networks, expanding capacity or building new connections to the MV grid.

More details about Metal Substations HEKA

Outdoor Distribution Cabinets HETR/ HELK

Outdoor Distribution Cabinets HETR/ HELK

HETR and HELK series cabinets are low-voltage distribution cabinets designed for low voltage switching, circuit protection, current limiting and electricity metering. HETR cabinets are used on consumer supply lines, supporting safe and efficient customer connections, while HELK cabinets provide reliable permanent network connections. The HELK range also includes pole-mounted cabinets for control measurements and metering applications, helping ensure stable operation in everyday power distribution networks.

More details about Outdoor Distribution Cabinets HETR/ HELK

Feel free to ask from our specialist:

Heigo Pikkor

Sales Manager | Compact substations and medium-voltage switchgear (Estonia)

••••••••

••••••••

Rait Kangro

Head of Sales and Marketing

••••••••

••••••••

Prefer we contact you instead?

Share your details and our team will reach out with the information you need.

You might also be interested in these products

SteelFLEX

SteelFLEX is most robust technical building solution, designed for very heavy equipment and harsh environments where durability and strength matter most. Built as an industrial technical building for demanding conditions, it provides reliable protection for critical systems and long-term performance on site. To match different project requirements, SteelFLEX can be delivered as a modified sea container or as a fully custom-built container solution. This flexibility makes it an ideal choice for container technical buildings and heavy-duty equipment shelters used in infrastructure, energy and industrial applications.

HECON EVO low voltage panel

High-performance switchgear solution for efficient current distribution up to 3200A on the main busbar, providing superior equipment protection and NH strip-type fuses as the main outgoing feeders.

Helios

Helios is a versatile modular E-House system that combines strong protection with quick installation. Its panel-based design makes it easy to adapt for different project needs while ensuring reliable housing for critical equipment and power distribution systems. A removable roof option allows large devices to be lifted in from above, simplifying installation and maintenance. This feature makes Helios a practical choice for prefabricated E-Houses and technical buildings where flexibility and efficient deployment are essential.

CombiFLEX

CombiFLEX is mid-to-heavy duty technical building solution, built for larger installations and heavier equipment. Compared to EasyFLEX, it offers a stronger structure, increased space and higher load capacity, making it a popular choice for E-House systems and demanding technical building applications. Designed for customers in the energy, industry and infrastructure sectors, CombiFLEX provides durable, prefabricated housing for complex electrical and mechanical equipment. The result is a modular technical building that protects critical systems, supports safe operation and helps projects move forward with confidence.

Leave your contacts, we will contact you