Functional Devices RIB2402SB Enclosed Power Relay 20 Amp SPST-N/O with Override 24VAC/DC 208-277VAC

The Functional Devices RIB2402SB is a pre-wired enclosed power relay designed for controlling HVAC equipment, building automation systems, lighting, and low-horsepower motors. This relay comes fully assembled in a NEMA 1 housing, eliminating the need to purchase and assemble separate components like sockets, mounting rails, and enclosures.

Key Features:

• 20 amp SPST normally-open contact configuration with manual override switch
• Dual coil voltage capability: 24 VAC/DC or 208-277 VAC for installation flexibility
• LED status indicator shows relay activation at a glance
• NEMA 1 housing rated for plenum use with 0.5-inch NPT nipple for easy installation
• Pre-wired with 16-inch, 600V rated color-coded wires to eliminate wiring errors
• Wide operating temperature range from -30°F to 140°F
• Expected relay life of 10 million mechanical cycles minimum
• UL Listed for UL916 Energy Management and UL864 Fire applications

Technical Specifications:

• Contact Rating: 20 Amp resistive and ballast at 277 VAC, 10 Amp tungsten at 120 VAC
• Motor Rating: 2 HP at 277 VAC, 1 HP at 120 VAC
• Pilot Duty: 770 VA at 120 VAC, 1,110 VA at 277 VAC
• Operating time: 18 milliseconds
• Humidity range: 5-95% non-condensing
• Approvals: UL, C-UL, California State Fire Marshal, CE, RoHS compliant

The Closed-Open-Auto override switch provides manual control on the load side of the relay, making this unit ideal for testing and maintenance applications. Installation is simplified by removing a conduit knockout, inserting the wires and nipple through the opening, tightening the locknut, and making the wire connections. Made in the USA.