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Functional Devices RIB2421SB : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPST-N/O + Override, 24 Vac/dc/208-277 Vac/120 Vac Coil, NEMA 1 Housing

Functional Devices

MSRP: $117.00
$58.50
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SKU:
RIB2421SB
Condition:
New
Availability:
70 In Stock | Ready to Ship
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Functional Devices RIB2421SB: Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPST-N/O + Override, 24 Vac/dc/208-277 Vac/120 Vac Coil, NEMA 1 Housing, Made in USA
Common Applications:

The RIB2421SB is widely used in HVAC, lighting, and motor control applications where override functionality is required. With compatibility across 24 Vac/dc, 120 Vac, and 208–277 Vac coil voltages, this relay integrates easily into both low- and high-voltage systems. The manual override switch is useful for service work or testing without requiring control input. This relay’s durable NEMA 1 enclosure and UL certifications make it suitable for commercial building automation projects.

Specifications
  • Relays & Contact Type: One (1) SPST Continuous Duty Coil
  • Expected Relay Life: 10 million cycles minimum mechanical
  • Operating Temperature: -30 to 140° F
  • Humidity Range: 5 to 95% (noncondensing)
  • Operate Time: 18ms
  • Relay Status: LED On = Activated
  • Dimensions: 2.30" x 3.20" x 1.80" with 0.50" NPT Nipple
  • Wires: 16", 600V Rated
  • Approvals: UL Listed, UL916, UL864, C-UL, California State Fire Marshal, CE, RoHS
  • Housing Rating: UL Accepted for Use in Plenum, NEMA 1
  • Gold Flash: No
  • Override Switch: Yes
Contact Ratings:
  • 20 Amp Resistive @ 277 Vac
  • 20 Amp Ballast @ 277 Vac (N/O)
  • 10 Amp Ballast @ 277 Vac (N/C)
  • Not rated for Electronic Ballast
  • 10 Amp 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 ; 208–277 Vac ; 120 Vac ; 50–60 Hz
Drop Out = 2.1 Vac / 3.8 Vdc
Pull In = 18 Vac / 22 Vdc

Coil Current:
83 mA @ 24 Vac
47 mA @ 120 Vac
69 mA @ 208–277 Vac
47 mA @ 30 Vdc

Mounting:
Enclosed
Number of Relays:
1
Relay Contact Type:
SPST-N/O
Relay Coil Voltage:
24 Vac/dc/120 Vac/208-277 Vac
Contact Ratings:
20 Amp