RIB RIB02BDC Enclosed Relay – 20A SPDT, Class 2 Dry Contact Input, 208–277VAC Coil Power, Surface Mount

RIB RIB02BDC Enclosed Relay – 20A SPDT, Class 2 Dry Contact Input, 208–277VAC Coil Power, Surface Mount

Condition: Used. Exterior shows signs of installation; minor scuffs on enclosure. Terminal screws intact. Fully intact casing with no visible damage to wiring ports or mounting tabs.

The RIB02BDC from Functional Devices, Inc. is a heavy-duty, enclosed relay designed for control systems where a Class 2 dry contact input is used to switch line voltage loads. This model accepts 208 to 277 VAC as coil power input and features a 20 Amp SPDT (Single Pole Double Throw) relay configuration, allowing control of a wide range of devices such as motors, fans, lighting circuits, and HVAC components.
The RIB02BDC is pre-wired and housed in a UL-approved plastic enclosure with integrated mounting feet for quick and secure surface installation. It’s ideal for retrofit or new construction control applications where isolated dry contacts must interface with high-voltage circuits.

🔧 Features:
Relay Type: SPDT (Single Pole, Double Throw)
Input Trigger: Class 2 dry contact
Coil Voltage: 208–277 VAC
Load Rating: 20A Resistive @ 277 VAC
Inductive Ratings:
16A FL/96A LRA @ 277 VAC
770 VA Pilot Duty @ 277 VAC
Enclosure Type: Surface mount, UL-rated plastic housing
Wiring: Pre-wired with color-coded 16″ leads
Mounting: Snap-track or surface mount
Agency Approvals: UL Listed, CE Certified

🏭 Applications:
HVAC control systems
Fan coil units and exhaust fans
Lighting automation and scheduling
Building automation systems (BAS/BMS)
Interfacing low-voltage occupancy or lighting sensors with high-voltage loads
Equipment shutdown control via building safety systems

🔄 Cross-Referenced Models:
RIB2401B – Similar function, 24VAC/dry contact input but different voltage rating
RIBU1C – Universal input version (not dry contact-only)
RIB01BDC – Same form factor, lower coil voltage range
Functional Devices RIB02P – 20A relay, but with 24VAC input
Honeywell R841C1169 – Line-voltage control relay, not identical but similar purpose

📌 Comparable Products:
Schneider Electric 8910DPA23V02 – Open-style relay, 208–277VAC coil, same current rating
ABB CR-M230AC2 – Plug-in relay, less integrated housing
Packard C230B – Enclosed SPDT relay with 277V coil, similar current handling
Siemens 42CF35AJ – Contactor-type relay, less compact but similar rating

🧩 Part of Larger Systems:
This relay is commonly integrated into:
HVAC control panels with programmable thermostats and automation logic
Lighting control cabinets that include occupancy sensors or photo controls
Energy management systems (EMS) in commercial buildings
Fan or motor control interfaces on systems using DDC (direct digital control)
Compatible with controls from systems such as:
Honeywell T775 (dry contact signal output)
Siemens Talon
Johnson Controls Metasys
Trane Tracer systems

⚠️ Trademark Disclaimer:
All product names, logos, brands, and other trademarks mentioned are the property of their respective owners. These names are used solely for identification purposes and do not imply endorsement or affiliation.

Related:
RIB relay 20A dry contact
HVAC control relay 208–277V
enclosed SPDT relay with class 2 input
dry contact interface module
building automation control relay
lighting control RIB module

Common Requests:
“RIB relay with 208-277V coil power and dry contact input”
“Used RIB02BDC HVAC control relay”
“What relay supports Class 2 dry contact and 20A switching?”
“Surface-mount enclosed relay for automation systems”
“RIB02BDC wiring and replacement options”

All product names, trademarks, and registered trademarks are the property of their respective owners. Use of these names does not imply any affiliation or endorsement.

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