Diversitech 90380 General Purpose Relay 18A 24V Spst

Product Description

The DIVERSITECH 90380 is a general purpose relay from the 9400 Series, designed for single-pole switching in HVAC control circuits and light commercial electrical systems. It features a 24 VAC coil voltage and an 18-amp contact rating, making it a standard choice for low-voltage control applications. The relay is configured as 1NO-1NC SPST, giving installers flexibility for both normally open and normally closed switching logic. Quick-connect terminals speed up wiring, and the universal mount with break-away tabs accommodates a wide range of panel and equipment mounting configurations. Licensed HVAC technicians and electricians regularly specify this relay for control board replacements and field-wired control panels.

This relay is suited for residential and light commercial HVAC equipment where 24 VAC control circuits are standard. Typical install scenarios include fan relay replacement, contactor pilot circuits, and general switching duties in air handlers, heat pumps, and packaged units. It operates at 50 or 60 Hz, supporting both domestic and select international equipment. The 125/250-volt contact rating covers the voltage levels commonly encountered in single-phase residential and light commercial systems.

Key Features

• 24 VAC coil voltage for direct compatibility with standard low-voltage HVAC control circuits
• 18-amp amperage rating with 1NO-1NC SPST contact configuration for versatile switching applications
• Quick-connect terminals for fast, tool-free wiring connections
• Universal mount with break-away tabs accommodates multiple panel and chassis mounting configurations
• Rated for both 50 Hz and 60 Hz operation
• Contact rating of 14 A at 125 V and 8 A at 250 V supports typical residential and light commercial loads

Compatibility

Designed as an OEM-style general purpose relay replacement for residential and light commercial HVAC control circuits requiring a 24 VAC coil, 1NO-1NC SPST configuration, and universal panel mounting.

Installation Notes

Installation should be performed by a licensed HVAC technician or electrician. Always de-energize the control circuit and disconnect power at the breaker before removing or installing the relay. Verify that the coil voltage and contact ratings of the replacement relay match the requirements of the equipment control schematic before wiring. Follow NEC guidelines for low-voltage control wiring and equipment grounding.

Technical Specifications

• Series: 9400 Series
• Type: General Purpose
• Coil Voltage: 24 VAC
• Amperage Rating: 18 A
• Contact Configuration: 1NO-1NC SPST
• Number of Poles: 1
• Voltage Rating: 125/250 V
• Contact Rating: 14 A at 125 V, 8 A at 250 V, 48 A at 250 V, 84 A at 125 V
• Current Rating (FLA): 12/60 FLA at 125 V, 8/48 FLA at 250 V
• Frequency Rating: 50/60 Hz
• Terminal Type: Quick-Connect
• Mounting: Universal Mount with Break-Away Tabs

Standard Information

• Brand: DIVERSITECH
• Manufacturer Part Number: 90380