AC or DC? The Shelly Pro 3 V1 Can Handle Both at Once!
Have you ever wondered if you can use the same Shelly device to control a 230V AC light and a 12V DC blind motor? With the Shelly Pro 3 V1 , the answer is a resounding YES!
One of the most powerful features of Shelly Pro devices (and one that often raises questions) is the capability of its dry contact relays, also known as "potential-free contacts." This functionality is key to incredible flexibility in your automation.
What is a Dry Contact Relay?
Imagine a traditional light switch. It simply opens or closes a circuit to turn something on or off. A dry-contact relay works exactly like that: it's an electrical switch that isn't internally connected to the power supply of the Shelly device itself.
This means that:
- It is independent: The current (AC or DC) and voltage you pass through the relay can be completely different from the current and voltage that feed the Shelly Pro 3 (which is always AC, from 110V to 240V).
- Isolates circuits: Allows a single Shelly device to control equipment operating on different power sources.
Versatility in Action: O1 for DC and O2 for AC
With your Shelly Pro 3 V1, you can connect and control:
- A direct current (DC) line , for example a 24V DC garage motor, to output O1 .
- An alternating current (AC) line , such as your 230V AC garden lighting system, to output O2 .
- And you would still have output O3 for another device, either AC or DC, or even a third line with a different voltage!
Each Shelly Pro 3 relay acts as an independent switch, giving you maximum flexibility in your home automation projects.
Crucial Limits to Remember
Although relays are very versatile, it is vital to respect their operating limits to ensure safety and proper operation:
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For Direct Current (DC):
- Maximum voltage: 30 V DC
- Maximum current: 16 A per channel
-
For Alternating Current (AC):
- Maximum voltage: 240 V AC
- Maximum current: 16 A per channel
Always make sure that the load you connect to each relay does not exceed these values to avoid damage to the device or the installation.
Why is this so useful?
This ability to handle different types of current and voltage in a single device is immensely valuable for:
- Simplify installations: Reduces the need for multiple controllers or auxiliary relays.
- Optimize space: A single Shelly Pro 3 can do the work of multiple devices.
- Planning flexibility: Allows you to integrate devices of different types and electrical requirements into a single automation system.
So, if you have in mind to automate a ceiling fan (AC) and at the same time control the irrigation system (which could be DC), your Shelly Pro 3 V1 is the perfect tool for the job.
Ready to take your home automation to the next level? At shellymadrid.com, we'll help you get the most out of your Shelly devices. Contact us!
