MCB vs RCBO: What's the Difference?
LIVE ELECTRICAL GUIDE | Harbro Electrical QUICK ANSWER An MCB (Miniature Circuit Breaker) protects the cable on a circuit from overload and short-circuit current - it does not protect a...
philip HARBORD |
Blogs and Insights
The Harbro Electrical blog covers practical guides, product comparisons, and installation advice for electrical contractors, tradespeople, and homeowners across the UK. Our articles span LED lighting, consumer units and circuit protection, CCTV and security systems, sealants and adhesives, and wiring accessories - providing factual, trade-level information to support product selection and installation decisions. From comparing CT1 sealant products to understanding the difference between IP and analogue CCTV, our guides are written to be directly useful on-site and in the specification process. Browse the latest articles below or use the search to find information on a specific product or installation topic.
MCB vs RCBO: What's the Difference?
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What Is an RCBO?
LIVE ELECTRICAL GUIDE | Harbro Electrical QUICK ANSWER An RCBO (Residual Current Breaker with Overcurrent protection) is a single DIN-rail device that protects one circuit against three fault types at...
philip HARBORD |
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Best Smart Doorbell Buyer's Guide
DOORBELLS GUIDE | Harbro Electrical QUICK ANSWER A smart doorbell is any doorbell that connects to Wi-Fi and sends a notification to a phone app - not simply a doorbell...
philip HARBORD |
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Video Doorbell Comparison Guide: Which One Should You Buy?
DOORBELLS GUIDE | Harbro Electrical QUICK ANSWER Harbro Electrical stocks three video doorbells across two price points. The Ener-J Smart Flexi (£49) is the budget option - battery or wired,...
philip HARBORD |
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Doorbell Installation Guide: How to Install a Wired or Wireless Doorbell (UK)
DOORBELLS GUIDE | Harbro Electrical QUICK ANSWER Installing a doorbell in the UK depends on the type. A wireless (battery) doorbell requires no electrical work - mount the button, plug...
philip HARBORD |
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Best Wireless Alarm Systems UK: A Trade Buyer's Guide
INTRUDER ALARMS GUIDE | Harbro Electrical WHAT IS A WIRELESS ALARM SYSTEM? A wireless alarm system is an intrusion-detection network where sensors - such as PIR motion detectors and door...
philip HARBORD |
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IP vs Analogue CCTV: What's the Difference?
A practical comparison for trade electricians. We cover the technical differences between IP CCTV and analogue HD-TVI systems - cabling, resolution, cost, smart features, and scalability - so you can...
philip HARBORD |
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How Long Does BT1 Take to Dry? Cure Time Explained
The question we hear at the counter regularly, usually from a plumber who needs to hand back the bathroom or a tiler who wants to know when they can grout....
philip HARBORD |
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BT1 vs CT1: Which C-Tec Product Do You Need?
Both come in the same size cartridge. Both are made by C-Tec. Both say TRIBRID on the label. They sit side by side on our trade counter shelf, they are...
philip HARBORD |
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Is CT1 Waterproof? Wet-Condition Application Explained
If you have ever needed to seal something in the rain, work around pipework that cannot be dried, or tackle a boat hull in standing water, this is the question...
philip HARBORD |
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What Is CT1 Sealant? A Trade Counter Guide
CT1 turns up on almost every trade job, but the name does not always come with an explanation. You have seen it on the shelf next to the silicones, you...
philip HARBORD |
