Honeywell rib2401b Power Relay 20A Spdt 24V/120V Coil Nema 1

Product Description

The HONEYWELL rib2401b is a single-pole double-throw (SPDT) enclosed power relay rated at 20 amps and designed for use in HVAC control, building automation, and low-voltage switching applications. The coil accepts 24 VAC, 24 VDC, or 120 VAC input, giving installers flexibility across a wide range of control circuit voltages. The relay is housed in a NEMA 1 enclosure for indoor panel or junction box mounting. Motor load capacity is rated at 1 HP at 120 volts. Licensed electricians and HVAC controls technicians are the primary installers for this type of device.

This relay is commonly used in commercial and residential HVAC systems where a low-voltage control signal must switch a higher-amperage load circuit. Typical applications include fan coil unit control, damper actuator switching, pump control, and general-purpose load switching inside electrical panels or control enclosures. The multi-voltage coil design makes it a practical choice for retrofits and new installations where control circuit voltage may vary by system.

Key Features

• SPDT contact configuration supports both normally open and normally closed switching in a single device
• 20 amp contact rating handles resistive and motor loads up to 1 HP at 120 volts
• Multi-voltage coil accepts 24 VAC, 24 VDC, or 120 VAC for broad control circuit compatibility
• NEMA 1 enclosure rated for indoor use, suitable for panel or surface mounting
• Compact enclosed design reduces need for separate relay socket or base in many installations

Compatibility

Designed as an OEM-style enclosed power relay for use in residential and commercial HVAC control panels, building automation systems, and general electrical switching applications where a 20-amp SPDT relay with a multi-voltage coil is required.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC controls technician in accordance with applicable NEC requirements. De-energize and lock out all circuits before wiring the relay coil and contact terminals. Verify that the supply control voltage matches one of the rated coil input voltages before energizing. Mount the NEMA 1 enclosure in a dry, indoor location and ensure contact load current does not exceed the 20-amp rating.

Technical Specifications

• Contact Configuration: SPDT
• Contact Rating: 20 amps
• Motor Load Rating: 1 HP at 120 volts
• Coil Voltage: 24 VAC / 24 VDC / 120 VAC
• Enclosure Type: NEMA 1

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: rib2401b