In the fast-paced world of building automation and control systems, having the right tools readily available can make all the difference. Functional Devices, a trusted leader in high-quality relays, transformers, power supplies, and current sensors, designs products that make installations, troubleshooting, and system upgrades faster and more reliable.
Among our most versatile offerings are the RIB® (Relay-In-a-Box®) product: compact, pre-wired solutions that save time on the job and reduce wiring errors. Keeping a core set of RIB products on hand ensures tradespeople can respond quickly to common control system needs, from switching relays to power distribution, improving efficiency and reducing costly delays. Here are the top devices we think every tradesperson needs in their toolbox.
Whether you’re an electrician, contractor, or controls specialist, stocking the right RIB products can save hours on service calls and installations. Check out the full RIB product lineup to ensure your toolkit is ready for any challenge.
Must-Have RIB Products for Every Job
These versatile products are known for their reliability and ease of use, making them perfect for quick fixes, last-minute changes, or unexpected jobsite needs.
RIBU1C: 10 Amp Universal Relay
The RIBU1C is one of the most versatile relays in the RIB lineup. It can be energized with 10–30 Vac/dc or 120 Vac and features 10 Amp rated SPDT contacts. Its universal design works in a variety of control systems, from HVAC to lighting.
Pro Tip: Pair it with a Functional Devices transformer like the TR100VA001 for easy integration into 24V control circuits.
RIB2401B: 20 Amp Relay
For applications that require higher current capacity, the RIB2401B offers 20 Amp rated SPDT contacts. It can handle larger loads while maintaining the same reliability and compact design as the RIBU1C.
High-Voltage Option: The RIB2402B supports 208–277 Vac applications for more demanding commercial or industrial systems.
RIBU2C: Dual 10 Amp Relay
Sometimes one relay isn’t enough. The RIBU2C provides two 10 Amp relays in a single enclosure, saving space and simplifying installations. Perfect for controlling multiple devices with a single mounting footprint.
Practical Use: Ideal for split-zone HVAC controls or lighting circuits that require independent switching.
RIB24P: 20 Amp DPDT Relay
The RIB24P features a 24 Vac/dc coil and 20 Amp rated DPDT (Double Pole Double Throw) contacts, allowing it to switch two circuits simultaneously. Its dual-pole design is perfect for more complex control scenarios.
Jobsite Tip: Use it in applications that require reversing motors or controlling dual lighting circuits from one signal.
RIB01BDC: Dry Contact Relay
The RIB01BDC is designed for dry contact inputs, like magnetic door switches or external sensors, making it highly adaptable. Rated for 20 Amp loads, it’s great for automated dust collection systems, irrigation, or appliance garage controls.
Bonus: Its compact design fits easily in crowded panels or retrofit projects.
TR100VA001: Step-Down Transformer
The TR100VA001 transformer steps down 120 Vac to 24 Vac, rated for 96 VA. It includes a built-in circuit breaker and mounting options (foot or single-threaded hub) for easy installation.
Why It Matters: Reliable 24V power is crucial for many RIB relays and other low-voltage control devices.
PSPT2RB10: Power Control Center
The PSPT2RB10 is a compact power distribution solution with a 10A-rated breaker, two 120 Vac outlets, and NEMA 1 housing. It simplifies panel wiring and provides easy access to power for testing or temporary devices.
Tip: Keep one in your van for on-site troubleshooting or temporary setups.
RIBW01B-EN3: Wireless Relay
For wireless control applications, the RIBW01B-EN3 is a 20 Amp SPDT relay with a 120 Vac dry contact input. It enables remote switching without extensive wiring, ideal for retrofits or systems where running wires is impractical.
Jobsite Tip: Pair with smart building automation devices for modern, wireless control solutions.
PSH100A: 100 VA Power Supply
The PSH100A offers 100 VA output in a durable enclosure, complete with an on/off switch and breaker. Its seismic certification ensures it performs reliably in demanding environments, making it a staple for commercial and industrial sites.
Why Keep These RIB Products on Hand?
Having these RIB products ready ensures you’re prepared for a wide range of building automation scenarios. Their compact design, versatility, and reliability save time and reduce errors, whether you’re handling HVAC systems, lighting, or general control tasks.
Regularly review your toolbox and replenish commonly used RIB relays to stay ahead of service calls and installations.
Equip Yourself with RIB for Success
Functional Devices’ RIB products are more than just relays; they’re compact, reliable solutions that keep jobs moving efficiently. By stocking essential RIB relays, transformers, and power supplies, tradespeople can handle almost any control system challenge without delays.
Ready to streamline your next project? Explore the full RIB line and start building your essential toolkit today.
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.