Functional Devices RIBTD2401B : Time Delay Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing

The RIBTD2401B is ideal for time-based control of loads in commercial and industrial automation systems. Featuring delay-on-make functionality and wide timing adjustment, it's commonly used for fan motors, lighting systems, and HVAC sequencing where delayed activation is needed for safe startup or staging control.

• Relays & Contact Type: One (1) SPDT 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: 6ms after time delay
• Relay Status: RED LED On = Activated
• Time Delay Status: PINK LED FLASHING = Timing
• Timing Mode: Delay On Make (N/O)
• Timing Range: 6 seconds – 20 minutes
• Timing Adjustment: 4-position DIP switch for range selection; single-turn potentiometer for fine adjustment
• Timing Tolerance: Switches 1 & 2 = ±10%, Switches 3 & 4 = ±5%
• Timing Repeatability: ±1%
• Temperature Timing Variance: ±1%
• Voltage Timing Variance: ±1%
• Recycle Time: 750ms Maximum
• Dimensions: 4.00" x 4.00" x 1.80" with 0.50" NPT Nipple
• Wires: 16", 600V Rated
• Approvals: UL Listed, UL916, C-UL, CE, RoHS
• Housing Rating: UL Accepted for Use in Plenum, NEMA 1
• Gold Flash: No
• Override Switch: No

• 20 Amp Resistive @ 277 Vac
• 20 Amp Ballast @ 277 Vac
• 16 Amp Electronic Ballast @ 277 Vac (N/O)
• 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

Input Current:
133 mA @ 24 Vac
45 mA @ 24 Vdc
51 mA @ 120 Vac

Coil Voltage Input:
24 Vac/dc ; 120 Vac ; 50–60 Hz
Drop Out = 3 Vac / 3.8 Vdc
Pull In = 20 Vac / 20 Vdc