Most Common Tripping Characteristics in Miniature Circuit Breakers Explained

Understanding the tripping characteristics of MCBs is crucial for selecting the appropriate MCB type based on the anticipated load and protection requirements of electrical circuits, ensuring efficient and reliable electrical protection. The tripping characteristic, also known as the I-t curve, determines how quickly an MCB cuts off current during overloads or short circuits. The three most commonly used tripping characteristics are B, C, and D. We explain the differences between them and their use cases.

Unleashing the Power of Mode 4 Charging: Safeguarding Your EV

Charger fuse for protection of highpower DC EV chargers

Safety is our top priority when it comes to Mode 4 charging systems. That's why our Charger fuse plays a vital role in safeguarding DC circuits, capable of handling voltages up to 1000V DC and rated currents up to 600A. These specially designed fuses feature unique dimensions and connection contacts tailored to meet the specific requirements of each charging application.

Anže Jerman Product manager

Photovoltaic String Protection: Keeping the Current Flowing Safely

Photovoltaic 1500V d.c. systems

With the PV String protection, we have in mind the protection of PV modules against reverse currents. It is used in combination with central inverters where PV strings are usually combined in d.c. combiner boxes. Inside d.c. combiner boxes, PV strings are protected with cylindrical fuse‑links inserted in cylindrical fuse holders. 

Anže Jerman Product manager

E-mobility: Electric chargers - part 2

The most efficient and safest method for charging electric vehicles for home use in accordance with the IEC 61851-1 standard is AC mode 3, either a single-phase or three-phase connection with different power ratings.

Aleksander Cilenšek Product manager

E-mobility: Electric chargers

E-mobility is booming; alongside electric scooters and bikes, we are also seeing more and more electric cars. There are several types of hybrid electric vehicles on the market: hybrid electrical vehicles (HEVs), plug-in hybrid vehicles (PHEVs) and battery electric vehicles (BEVs).

Aleksander Cilenšek Product manager

Photovoltaics Array protection

When we talk about photovoltaic installations for voltage up to 1500V DC, we can mean different types of solutions and ways to implement them in reality. There are several ways to convert DC voltage to AC voltage.

Anže Jerman Product manager

Utility-scale Battery storage system

Battery storage system is a system of serial and parallel-connected battery cells. In a battery rack are serial-connected battery modules and in battery array are parallel-connected battery racks. Battery racks are usually containerized and electrically combined inside d.c. combiner boxes, protected with fuse-links. Battery containers are then connected to the battery inverter, electically combined in an inverter d.c. combiner box protected with fuse-links.

Anže Jerman Product manager

New software tool called FuseSpline, helps users select the suitable HV fuse-links for protection of power transformers, motors or compensatory batteries.

The process of selecting the suitable protective devices in electrical installations is very important and must always be carried out professionally. This is especially true for the high voltage range, ie voltages higher than 1.000V.

Viktor Martinčič Product manager for fuse systems, Chairman of IEC technical committee for fuses TC 32

Smart home of tomorrow - with ETI protection devices

ETI is a part of all-Slovenian project that brings together individual, recently developed and technologically advanced, yet complementary, solutions of 12 Slovenian companies in a completely new and integrated solution that will enable the construction of a sustainable, smart, interconnected, user-friendly, advanced and healthy living environment.

Matija Strehar  R&D manager for electrotechnical products

Solutions for protection of photovoltaic energy systems

Photovoltaic energy is today one of the highest growing sources of renewable energy, and the forecast of the future also shows the same trend. With our care for the environment, ETI prepares solutions to the protection of photovoltaic energy systems. Green protect solutions includes NH fuse-links, CH fuse-links, fuse-holders, switch disconnectors, SPDs and all accessories which are needed for safe protection and also for a user-friendly operation and maintenance.

Anže Jerman Product manager