We have some great relays in boxes, but did you know we offer multiple individual relays in one box? There are some options to choose from in both 10 Amp and 20 Amp contact ratings! Read on to learn more.
We have seven options to choose from if you're looking for two relays in one box. All model names with a "C" on the end have 10 Amp rated contacts. The model name with "B" on the end has a 20 Amp rated contact.
We have two options when it comes to three relays in one box:
Finally, we have one option when it comes to four individual relays in one box:
Multiple RIB Relays in One Box for Building Control
When planning control relays for buildings, having multiple relays in a single enclosure can save serious time and panel space. That’s exactly what these RIB relays offer, giving you two, three, or even four individually controlled relays in one convenient box. It’s a straightforward way to manage multiple loads for lighting, fan control, or HVAC equipment while reducing the wiring and clutter that comes with installing separate relay enclosures.
Whether you need the 10 Amp models for lighting circuits or the 20 Amp options for heavier loads, these RIB relays simplify your workflow while maintaining the reliability you expect in building control projects. With clear model options like RIBU2C, RIBL3C, or RIBL4C, you can quickly match the right relay box to your application, making it easier to plan and install your next building automation project with confidence.
I hope this list makes finding your next relay as convenient as it is to have one of our relays! If you find yourself scratching your head and having more questions than you started out with, feel free to contact us! We're happy to help!
About Functional Devices, Inc.

Functional Devices, Inc., located in the United States of America, has been designing and manufacturing quality electronic devices since 1969. Our mission is to enhance lives in buildings and beyond. We do so by designing and manufacturing reliable, high-quality products for the building automation industry. Our suite of product offerings include RIB relays, current sensors, power controls, power supplies, transformers, lighting controls, and more.
We test 100% of our products, which leads to less than 1 out of every 16,000 products experiencing a failure in the field.
Simply put, we provide users of our various products confidence and peace of mind in every box.