Smart products from EFEN for smart energy grids

With the new E⁵ series, EFEN sets a new benchmark for operator safety, functional versatility and seamless system integration. Designed for the demanding requirements of modern power distribution, the E⁵ range covers sizes 00/185 to 3 with rated currents from 160 to 2000 A – delivering maximum flexibility in an impressively compact footprint.

Maximum Safety Through Intelligent Interlocking

Safety is at the core of the E⁵ design. The series features a consistently enhanced mechanical interlocking system that ensures safe operation even under challenging conditions.

• A technical interlock ensures that the switching cage can only be removed by pressing the yellow release buttons.
• Fuse removal is clearly defined both visually and mechanically via a dedicated yellow push button.

These coordinated safety mechanisms provide outstanding operator protection and minimize the risk of incorrect handling.

Flexible Architecture, Smart Connectivity

The E⁵ series integrates effortlessly into 185‑mm busbar systems and offers a wide range of configuration options:

• 1‑ or 3‑pole switching
• Cable connection via cable lugs or V‑clamps
• Disconnect rails for busbar feed‑in up to 2000 A

This modularity makes the E⁵ the ideal choice for scalable power distribution systems and customized installation concepts.

Advanced Monitoring for Maximum Operational Reliability

To ensure reliable system protection, the E⁵ series offers multiple options for fuse monitoring:

• Installation on the switch cover or on the base unit
• Phase‑specific monitoring for precise fault detection
• Modbus communication for seamless integration into monitoring and SCADA systems

These features enable continuous condition monitoring.

Integrated Measurement Without Additional Space Requirements

In combination with the MEM 1 Gen.2 measurement modules, the E⁵ series enables intelligent grid monitoring without increasing installation dimensions. Thanks to RJ45 interfaces for data and power supply, the plug‑and‑play concept is implemented consistently. Low‑signal or current transformers are fully integrated within the device envelope, ensuring:

• No additional installation space
• Accurate energy and load measurement during operation
• Fast and clean integration into digital infrastructures

E⁵ – Safety, Flexibility and Digital Intelligence in One System

The new E⁵ series combines cutting‑edge safety engineering, modular installation flexibility and modern digital monitoring capabilities. It is the ideal solution for operators who want to future‑proof their power distribution systems while reducing installation effort and maximizing operational reliability.

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Compact Intelligence for Maximum Grid Transparency

With the Measurement Electronic Module (MEM 1 Gen.2), EFEN introduces a compact and powerful solution for capturing electrical measurement data in distribution networks. The module is ideal for simple retrofitting or new installations and provides the foundation for a transparent and efficiently monitored low‑voltage grid.

Technical Highlights

• Click‑and‑Fix mounting directly onto E‑series NH fuse‑switches vertical design disconnectors
• Ultra‑compact installation height of just 40 mm
• Modbus communication or optional wireless transmission
• Fast commissioning thanks to intuitive configuration
• Flexible application from cable distribution cabinets to transformer stations

The MEM 1 Gen.2 makes grid transparency easier than ever – space‑saving, robust and ready for immediate operation.

Convenient Measurement for Modern Power Distribution

The EFEN Measurement Electronic Module enables reliable and convenient monitoring of grid conditions in power distribution systems. Integration is fast and clean – without extensive wiring effort and without modifying existing system structures.

Your benefits at a glance:

• Direct mounting with minimal wiring effort
• Local addressing for fast and secure system integration
• Data transmission via Modbus for seamless integration into control systems
• Easy disconnection of the module for quick cable fault location

Simple Retrofit of Existing Installations

In combination with the E‑series NH fuse‑switches vertical design, sizes 2–3, the MEM 1 Gen.2 offers a particularly simple way to upgrade existing installations with complete current measurement. Integration requires no additional installation space – ideal for modernization projects and the digitalization of existing grid infrastructures.

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The challenges of the future pose major challenges for all those involved in electrical power distribution. From the shortage of skilled workers to increasing cost pressure, those involved must find solutions to ensure their success. Rittal’s new busbar system – RiLineX – has created a platform to meet these challenges.

RiLineX offers a modular, manufacturer-neutral, and license-free busbar system platform suitable for a wide range of applications – from the process industry to renewable energies and IT infrastructures. The platform enables quick, easy, and secure installation, thus significantly contributing to increased efficiency.

As an official technology partner, EFEN GmbH, with its renowned and tested quality, complements the range of products and services with NH fuse-switch, vertical design for the 60 mm busbar system.

With the simple and secure hook connection to the IP2x system in RiLineX, installation is quick and safe. The proven and well-known NH fuse-switch, vertical design of the E³-series offer a high switching category and proven parallel isolation, which underscores their safety. The various cable connection options support speedy installation.

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With the E⁴-series, EFEN offers a standardised range of devices for energy distribution, which provide the basic requirements for a smart energy distribution network. The core element of intelligent energy networks is the recording and evaluation of power data. The E⁴ products enable you to record this data easily and conveniently.

Years of experience and technical specifications have been incorporated into the development of this series in order to achieve the optimum result in terms of technical values and safety.

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The changes in the energy supply grid mean new challenges for everyone involved. New energy sources are making the generation of energy more remote, volatile and decentralised. The current grid status values must be combined in line with demand due to the strongly fluctuating energy flows and, with increasing e-mobility, higher consumption peaks for charging processes, in order to smartly combine supply and demand. Here, the intelligent utilisation of the existing grid structure is opposed to grid expansion and it is important to measure the grid at various neuralgic points. With the measured value acquisition module 1, EFEN offers you a space-saving option – for more intelligence in your grid.

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The requirements for energy distribution are changing rapidly and comprehensively in terms of utilisation, functionality and structures. To ensure reliable operation, supply network operators, industrial companies and facility management increasingly require up-to-date measured values and information about the load on their distribution networks. This information needs to be provided almost in real time in order to be able to take appropriate control measures, particularly in hot spots such as local grid stations.

The smartisation of energy distribution grids is a practical solution for the systematic measurement of energy values: simple and interruption-free installation in existing systems, flexibility with regard to the number of measurement points and handling without the need for extensive training. With the Smart Grid Interface Module Comfort, EFEN offers a modular system for recording electrical and other physical measured variables in distribution cabinets and cable distributors.

Individually configurable

Thanks to its compact design, the SGIM Comfort fits into the spare space in the cable distribution cabinet and offers a wide range of possible applications. With just one device, you can carry out 3-phase monitoring of up to 14 low-voltage connections. Upgrades with measuring and communication modules complete the modular system.

Simple installation

Uninterruptible ‘plug & play’ installation under voltage on a 185 mm busbar system. In conjunction with the Rogowski coils, you have a quick and easy way to integrate the complete current measurement into your existing system at a later date – freely configurable according to your requirements. We recommend our pre-assembled E³ NH fuse-switch with integrated current transformers for a new installation.

Integrated safety

The integrated CAT IV overvoltage protection safeguards your devices. You can also rely on the protection of an integrated firewall, so that your network analysis data is protected against attacks and secured in accordance with modern transmission protocols.

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The ongoing energy transition is leading to ever larger and more powerful photovoltaic systems. For greater efficiency, PV systems on commercial buildings, industrial and ground-mounted systems are increasingly being designed for higher output voltages. String inverters with 800 V AC are progressively being used, especially in the medium power range.

The higher AC output voltage places higher demands on electrical safety. EFEN offers optimized solutions for 800 V string inverters. The fuse-switch-disconnectors from the E-series have powerful contact devices that enable reliable disconnection of the arc at this voltage level. The compact EFEN NH fuse-links for 800 volts reliably protect the system from damage. The innovative fusible link design in the compact standard NH housing offers low power loss and a high rated breaking capacity.

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