Power Relay, SPDT, 120 VAC, 18 A, 184 Series, Panel Mount, AC

Description
A rugged general-purpose relay designed for industrial, HVAC, and control applications. The 90-372 offers reliable switching of high AC loads in a compact, enclosed package that delivers long service life and robust performance.

Key Specifications & Features

• Contact Configuration: SPDT (1 Form C) (Single Pole, Double Throw)
• Contact Rating: 18 A (resistive load)
• Maximum Switching Voltage: 277 VAC
• Coil / Actuation: Non-latching type for precise control
• Mounting / Enclosure: Fully enclosed, compact design suitable for use in control panels or tight spaces
• Mechanical Life: Up to 1,000,000 operations (no load)
• Operating Temperature Range: –40 °F to 150 °F (approximately)
• Coil / Control Termination: Quick-connect terminals (for easy connection)

Benefits & Ideal Applications

• High Load Capability: With an 18 A contact rating at 277 VAC, this relay is suitable for powering motors, compressors, lighting loads, or other heavy AC devices.
• Versatile Switching: The SPDT configuration allows switching between two circuits or providing both NO (normally open) and NC (normally closed) outputs.
• Durable Design: The enclosed housing protects the internal contacts from dust and contaminants, extending lifespan in industrial settings.
• Compact Footprint: “Heavy-duty” construction in a relatively small package makes it well-suited for control panel installations with limited space.
• Reliable Operation: With mechanical life rated at around a million cycles (under no load), it offers reliability over long runtimes.

Installation & Usage Tips

1. Mount Securely: Ensure the relay is firmly fixed to reduce vibration and maintain reliable connections.
2. Match Load to Rating: Avoid exceeding 18 A resistive rating; if driving inductive loads, account for higher stresses (inrush current).
3. Use Proper Wiring: Keep wire lengths short, use appropriate gauge wiring, and use crimp or secure terminations on quick-connect tabs.
4. Allow Ventilation: Even though the relay is enclosed, ensure there’s some space around it in the panel to dissipate heat, especially under high load.
5. Test Before Deployment: Cycle the relay under expected load conditions to validate switching behavior, timing, and contact integrity.