Come scegliere il differenziale piu' adatto e quali tipi esistono in commercio?

Here you can find the complete range of our RCDs. https://bit.ly/3X0Qu2E If you have any questions, please contact us at [email protected] or send us a WhatsApp message at +39 327 786 77 22 In a previous video, we saw why RCDs trip. Today, we'll see which one to choose. Did you know that there are various types of RCDs? But what types are there and what are their characteristics? One of the characteristics that can distinguish RCDs is the residual current, i.e., the threshold beyond which they trip. The RCD in the video is 0.03 A. This means that if the input current differs from the output current by 30 mA, it trips. There are 30 mA and 300 mA versions, and there are also 10 mA versions used, for example, for hot tubs. Another characteristic of RCDs is their amperage. They start at 25 Amps. Unlike circuit breakers, which we might make another short video about later, RCDs have a maximum capacity. So, if you have a 25A RCD, it can handle loads from 0 to 25 amps. If it exceeds this threshold, you need a 40A RCD; if it exceeds 40, you need a 63A RCD, and so on. But what types are there? The most common is the AC class, which is also the oldest model and only detects sinusoidal alternating current leakage. So, for slightly older appliances, it's also fine. A Class A RCD, on the other hand, is essential for the modern home. In fact, unlike the original type, it also detects pulsating unidirectional currents. This means that many appliances, such as new washing machines with inverters or even LED power supplies, in the event of a fault generate a pulsating leakage that the AC type RCD cannot detect. So, as of 2025, a Type A RCD is truly the bare minimum to protect your home, your system, and, above all, your appliances. The Class F RCD is primarily designed for all appliances with variable speeds. Consider, for example, air conditioners, and therefore appliances with inverters or motors. They are also more resistant to nuisance tripping due to line disturbances. Class F RCDs are capable of detecting sinusoidal alternating currents and pulsating direct currents. They have excellent resistance to transient disturbances and atmospheric surges. In terms of performance, Class F RCDs fall between Class A and Class B RCDs. Class B RCDs are truly the best of the best. Of those we've seen, the Class B RCD is the only one capable of detecting direct current leakage. These types of currents can be found in photovoltaic systems or modern car charging systems. The last piece of advice I can give you is that if you have a large house, like a small villa, and you have a main switchboard and many sub-switchboards, you need to pay attention to the selectivity of the RCDs. Obviously, your installer, who knows what he's doing, will pay attention to this. If we install two RCDs, for example, 0.03 A, one upstream and one downstream—for example, one in the main switchboard and one protecting the garage—what happens? If the one in the garage trips, the one in the main switchboard will also trip. So, if a socket in the garage breaks, the power to the whole house goes out. In these cases, you can take a less sensitive RCD, such as a 0.3 A, and install it upstream of everything. If we want even more selectivity, you can take a 0.5 A and obviously install all the 0.3 or 0.03 A RCDs downstream. #maintenance #bticino #siemens #electricity #electricalmaterials #DIY #howto #differential Subscribe to the channel and follow us on all social media to stay up-to-date on news, updates, interesting facts, and tips about electrical materials!   / misterelettro     / 61582917233967   https://www.tiktok.com/@misterelettro...