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
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
Circuit Breaker Selectivity — Coordination & Selection Guide
Selectivity is more than just different ratings. This article explains how to properly pair circuit breakers so that only the damaged section is de-energized during a fault. Manufacturer tables, real examples, common mistakes...
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27 april 2026
Modular DIN-Rail Circuit Breakers — Selection Guide for Home
A complete guide to modular DIN-rail circuit breakers. We cover key characteristics — poles, rated current, trip curves B/C/D, and breaking capacity. Practical scenarios for apartments and private houses...
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20 april 2026
10 kA Circuit Breakers — Breaking Capacity & Selection Guide | UEC
10 kA breaking capacity is the maximum short-circuit current a breaker can safely interrupt. This article compares 4.5, 6, and 10 kA ratings, explains the difference between Icu and Ics, provides a selection algorithm, and lists common mistakes...
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13 april 2026
Breaking Capacity 4.5, 6, 10 kA - Comparison & Selection Guide
How to choose the breaking capacity (Icn) of a circuit breaker — 4.5, 6 or 10 kA? A UEC engineer explains the differences, provides a decision matrix for apartments, houses and commercial facilities, and breaks down IEC standards and common selection mistakes...
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06 april 2026
Setting up a Gewiss mechanical timer: simple automation for your home
Master the setup of your Gewiss mechanical timer. Learn about 230V wiring, load connection, and schedule programming for home and business...
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25 march 2026
Professional approach to electrical installation: 3-phase panel assembly with UEC
A deep dive into assembling a 36-module electrical panel with UEC equipment. Learn about circuit logic, ATS integration, and professional wiring standards...
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25 march 2026
Gewiss Multimedia Enclosures: the hub for your smart home
A professional center for your home network: includes sockets, perforated cooling doors, and a full mounting kit for a clean, wire-free setup...
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25 march 2026
3P & 4P Circuit Breakers
Complete guide to three-pole (3P) and four-pole (4P) circuit breakers: catalog from UEC and GEWISS, current prices, specification comparison, wiring diagrams and expert advice on choosing protection for three-phase networks...
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23 march 2026
Where to Install a Double-Pole Breaker
A double-pole circuit breaker (2P) is most commonly installed at the main panel input — to completely disconnect both phase and neutral. Single-pole (1P) breakers are sufficient for branch circuits. This article covers PUE standards, 1P/1P+N/2P comparison, wiring diagrams, and common installation mistakes...
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16 march 2026
Circuit Breakers with Neutral Switching (2P, 1P+N)
We explain why installing a single-pole circuit breaker on the neutral wire is prohibited, when a double-pole breaker (2P or 1P+N) is required, and how to select the right protective device for your main panel, generator, and branch circuits. Practical advice from UEC engineers...
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09 march 2026
Consequences of Incorrect Circuit Breaker Selection: Hidden and Obvious Hazards
A wrong circuit breaker is not just an inconvenience — it is a real threat. An oversized rating melts insulation and leads to fire. An undersized one trips the lights and damages equipment. A wrong B/C/D characteristic causes nuisance tripping or delayed response during a short circuit. We break down all scenarios with tables, formulas, and a selection algorithm...
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23 february 2026
Nuisance Tripping of Circuit Breakers: Causes, Diagnosis, and How Wrong Trip Curves Exacerbate the Problem
Circuit breaker tripping without overload? This article covers 5 most common causes of false tripping (from loose terminals to inrush currents), step-by-step diagnostics, express-check tables, and expert advice from a UEC engineer with 15 years of experience. Learn how the wrong B/C/D trip curve amplifies the problem...
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16 february 2026
Understanding the differences between B, C, and D trip characteristic
Trip curves B, C, and D determine how sensitive a circuit breaker is to inrush currents. B (3–5 In) suits lighting and heating elements, C (5–10 In) is the universal standard for outlets, D (10–20 In) is for motors and heavy machinery. This article includes comparison tables, a real-world selection algorithm, and common mistakes...
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10 february 2026
380V Three-Phase Circuit Breaker: Calculation, Selection, and Installation
Complete guide to selecting a three-phase 380V circuit breaker: calculation formula with cos φ and √3, choosing between 3P and 4P, trip curves B/C/D for motors and heaters, cable capacity verification. Online calculator, cross-section tables and common mistakes checklist...
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06 february 2026
UEC SB-ATS-4-100 automatic backup power switch
The UEC SB-ATS-4-100 automatic transfer switch is a four-pole ATS rated at 100 A for systems with three-phase input. It provides instantaneous switching between main and backup power supplies and supports generator control...
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