Functional Devices RIB2401B : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPDT, 24 VAC/DC or 120VAC Coil Voltage, NEMA 1 Housing

The RIB2401B Power Relay is designed for dependable control in HVAC, lighting, and motor applications. Widely used in building automation, it provides safe isolation between low-voltage control circuits and high-voltage loads. Dual coil voltage capability (24 Vac/dc or 120 Vac) ensures broad compatibility, while SPDT contacts deliver versatile switching performance.

• Relay & Contact Type: One (1) SPDT Continuous Duty Coil
• Mechanical Life: Minimum 10 million cycles
• Operating Temperature: -30 to 140°F
• Humidity Range: 5–95% (noncondensing)
• Operate Time: 18 ms
• Relay Status Indicator: LED (On = Activated)
• Dimensions: 2.390" x 3.310" x 1.810" with 0.50" NPT Nipple
• Lead Wires: 16" length, 600V rated
• Certifications: UL Listed, UL916, UL864, C-UL, California State Fire Marshal, CE, RoHS
• Housing: UL accepted for plenum use, NEMA 1
• Gold Flash Contacts: No
• Override Switch: No

• 20A Resistive @ 277 Vac
• 5A Resistive @ 480 Vac
• 20A Ballast @ 277 Vac
• 16A Electronic Ballast @ 277 Vac (N/O)
• 10A Tungsten @ 120 Vac (N/O)
• 770 VA Pilot Duty @ 120 Vac
• 1,110 VA Pilot Duty @ 277 Vac
• 2 HP @ 277 Vac
• 1 HP @ 120 Vac

Coil Voltage Input:
24 Vac/dc or 120 Vac, 50–60 Hz
Drop Out: 2.1 Vac / 3.8 Vdc
Pull In: 18 Vac / 22 Vdc

Coil Current:
50 mA @ 18 Vac
83 mA @ 24 Vac
47 mA @ 120 Vac
33 mA @ 22 Vdc
35 mA @ 24 Vdc
47 mA @ 30 Vdc