Manual Changeover Switch 1-0-2: What It Is and How to Choose
A changeover switch — also called a three-position switch or a 1-0-2 load transfer switch — is a manual device that moves the house supply from the grid to a generator and back. We explain what the three handle positions mean, how this isolator differs from an automatic ATS, and how to pick the rating and the pole configuration for your site...
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27 july 2026
Innovative solutions by GEWISS and UEC: Technical seminar at PIVDEN SVITLO
UEC held a technical seminar for the partners of PIVDEN SVITLO, showcasing innovative solutions from GEWISS and UEC, including the latest product launches, Smart Home solutions, and comprehensive electrical solutions for residential, commercial, and industrial applications...
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23 july 2026
New GEWISS stock arrival at UEC – Circuit Breakers, Enclosures, IEC 309 Plugs & Sockets
A new shipment of GEWISS electrical equipment is now available at the UEC warehouse. The range includes modular protection devices, junction boxes, electrical enclosures, IEC 309 industrial plugs and sockets, and wiring accessories – all ready for immediate dispatch...
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22 july 2026
ATS for a Generator and Inverter: Wiring Diagram and Installation
An ATS for a generator transfers the house load to the backup source in 50 ms and guarantees separation between sources. We go through the wiring diagram: where to run line, neutral and earth, where the transfer switch sits in the panel, how the hybrid-inverter scenario differs from the generator one, and why feeding a generator into a socket is lethal...
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20 july 2026
ATS (Automatic Transfer Switch): The Complete Guide
An ATS (automatic transfer switch) moves the load from the grid to a generator or an inverter by itself — in anything from 50 ms to 1-2 seconds. The UEC engineering department explains the operating principle, the four types of device, how to calculate the rated current from power, and how to choose the number of poles for your earthing arrangement...
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13 july 2026
UEC SB-RV & SB-RVA Voltage and Current Monitoring Relays: Reliable Electrical Protection
UEC introduces a new range of SB-RV and SB-RVA voltage and current monitoring relays. The product series provides reliable protection for residential, commercial, and industrial electrical systems, including voltage monitoring, overload protection, and three-phase network control...
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09 july 2026
UEC Smart Home Solutions: Wi-Fi & Zigbee Devices for Home Automation
UEC presents a video review of its latest smart home solutions. Discover smart sockets with USB and USB Type-C ports, IP44 weatherproof outlets, Wi-Fi DIN rail smart switches, and a multi-mode Zigbee gateway designed to make your home more comfortable, secure, and energy-efficient...
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09 july 2026
36-Module UEC Electrical Distribution Board: Protection, ATS and Smart Home Solutions
UEC presents a detailed video review of a modern 36-module electrical distribution board assembled with UEC components. The solution combines advanced electrical protection, automatic backup power switching, and smart home automation technologies in one compact enclosure...
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09 july 2026
UEC Expands the PRO Series with New IP55 Surface-Mounted Junction Boxes
UEC has expanded its PRO series with new compact IP55 surface-mounted junction boxes. Designed for installations with limited mounting depth, the new models combine durability, ease of installation, and reliable protection...
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09 july 2026
UEC and GEWISS On-Site Product Training for Kabelelektrotekhnika in Cherkasy
UEC organized an on-site training session for the specialists of Kabelelektrotekhnika in Cherkasy, introducing the latest UEC products and the premium Italian GEWISS product range, along with their features, benefits, and applications...
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09 july 2026
ATS or Manual Transfer Switch: What to Choose for Your Home
There is always one device between the grid and your backup source — the transfer switch. We explain when you need an automatic ATS that switches in 50 ms, and when a manual 1-0-2 changeover switch is enough: a seven-criteria comparison and a scenario matrix for apartments, houses and businesses...
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06 july 2026
RCD Wiring Diagram in a Panel: Single-Phase and Three-Phase
Over 80% of panels in Ukraine are assembled with a single-phase layout, where the RCD is the only barrier between current leakage and electric shock. Three working wiring diagrams, conductor cross-sections and five typical installation mistakes that cause nuisance tripping...
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22 june 2026
RCD (Residual Current Device) — Full Guide: How to Choose, Connect, and Avoid Mistakes
A residual current device (RCD) is the only apparatus in a panel that detects current leakage to a person's body or an enclosure and instantly breaks the circuit. UEC engineering guide: operating principle, types, selection by current and sensitivity, wiring diagrams, installation mistakes...
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15 june 2026
RCD or RCBO — Which to Choose for an Apartment or House
RCD plus a breaker, or a single RCBO? We explain the difference, compare both across 8 key parameters and show when each solution is more cost-effective for an apartment, house or industrial site...
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08 june 2026
TM UEC іntroduces new SMART solutions for modern homes
TM UEC presents a new range of SMART devices for modern home automation. The assortment now includes Wi-Fi and ZigBee smart DIN-rail switches, smart sockets with energy monitoring, and the MHUB-1 multi-mode gateway. The new products provide remote control, power consumption monitoring, automation scenarios, and improved electrical network safety...
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29 may 2026
Voltage Relay Wiring Diagram for Electrical Panel: Single-Phase and Three-Phase
A voltage relay disconnects the circuit in 0.02 seconds during a voltage surge — but only if wired correctly. This article covers 5 field-tested wiring diagrams: basic single-phase, with contactor for loads over 40 A, socket-type, three-phase, and full protection with RCD. Plus 6 mistakes we see even from experienced electricians...
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25 may 2026
Expansion of the UEC range of protective automation equipment — SB-RV-08 and SB-RVA-08 series voltage and current relays
The UEC brand presents the new SB-RV-08 series voltage relays and the SB-RVA-08 combined voltage and current relays for single-phase and three-phase networks. These new products ensure continuous monitoring of network parameters and effective protection of electrical equipment...
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18 may 2026
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An overview of the ready-made GEWISS electrical distribution board for a modern home
In this new video, we showcase a ready-to-use GEWISS distribution board for a modern home and take a detailed look at its features: circuit protection, the Restart Autotest PRO RCD, lighting control, energy recovery and electric vehicle charging...
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18 may 2026
Voltage Relay + RCD and RCBO: Proper Connection Sequence in Electrical Panel
Voltage relay, RCD and RCBO are three protection devices with different functions. This article explains why they are not interchangeable, how to properly arrange them in the panel, and what mistakes to avoid during installation...
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18 may 2026
FEGIME Day 2026: Come and visit the UEC and Gewiss stand
See you at the industry’s flagship event — FEGIME Day 2026! We invite you to visit our stand, where we will be showcasing innovative solutions from the UEC and Gewiss brands. You can look forward to exclusive new products, practical case studies and the chance to chat with experts in person. 22 May, from 09:30. Registration is now open!..
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13 may 2026
New stock of GEWISS (Italy) equipment
We are pleased to announce the arrival of a new batch of products from the Italian brand GEWISS. We have a wide range of power distribution equipment in stock, from circuit breakers to IEC 309 HP series industrial connectors and distribution boards. The products are now available for dispatch...
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13 may 2026
UEC New Mounting Accessories: Busbar Insulators, Terminal Blocks and DIN Rail Components
UEC introduces a new range of mounting accessories for electrical panels, including SM busbar insulators, step insulators, KVM input terminals, and DIN rail stops. The products provide reliable fixing, insulation, convenient connection, and professional installation solutions...
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12 may 2026
Voltage Relay - Complete Guide: How to Choose, Connect and Configure for Your Home
A voltage relay disconnects the electrical network within 0.02 seconds when voltage exceeds the safe 207–253V range per DSTU EN 50160:2023 and automatically restores power after stabilization. This guide covers the operating principle, 4 classification axes, 7 selection criteria, brand comparison with 2026 prices, panel wiring diagram and 6 common installation mistakes...
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11 may 2026
Voltage Relay vs Voltage Stabilizer - Which to Choose for Your Home
A voltage relay disconnects the network during dangerous voltage spikes, while a stabilizer corrects voltage to 220V. This article compares both devices across 8 parameters, examines three typical scenarios, and provides specific recommendations for apartments, private homes, and cottages with gas boilers...
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04 may 2026
