Penn C450CCN4, System 450 Control, Standard Modular, 4 Button Touchpad Ui, Relay Output, LCD Display, Provides Two Relay Outputs ( SPDT Line Voltage Relay ) for SPDT Control, 24 VAC External Supply Power

HVAC relay — Penn C450CCN4, System 450 Control, Standard Modular, 4 Button Touchpad Ui, Relay Output, LCD Display, Provides Two Relay Outputs ( SPDT Line Voltage Relay ) for SPDT Control, 24 VAC External Supply Power

The HVAC relay (manufacturer part C450CCN4) is a genuine OEM relay available at Cedars HVAC, your trusted source for heating, cooling, and refrigeration parts. We stock this relay for fast nationwide shipping from our Miami warehouse, so contractors, facility managers, and homeowners can get the exact replacement they need without delay.

Product details

The Penn (Johnson Controls) System 450 Modular Electronic Controls support condenser fan cycling, medium and low temperature refrigerated cases, cooling tower and boiler control, electronically communicated (EC) motor control, RS485 Modbus or ethernet communication, temperature, pressure and/or humidity with on/off, proportional, reset and differential control, walk in coolers and freezers, and more.

Why buy from Cedars HVAC

• Genuine OEM HVAC parts — not aftermarket substitutes
• Contractor-friendly pricing on every relay
• Fast nationwide shipping from Miami, FL
• Real HVAC expertise — call us at (305) 850-6693 if you need help confirming compatibility
• Financing available through PayPal Pay Later

About this part

This HVAC relay is part of our Controls catalog. Contact us if you need help identifying compatible models or sourcing volume quantities. For installation guidance, always refer to the manufacturer documentation and consult a licensed HVAC technician where required.

Shipping and returns

Most HVAC relay orders ship the same or next business day from Cedars HVAC in Miami, Florida. Standard ground shipping covers the continental United States, and expedited options are available at checkout. Returns are accepted within 30 days on unopened, uninstalled parts — see our return policy for full details. International shipping is available on request; contact our team for a quote.

Frequently asked questions

Is this part new and in stock? Yes, we list only in-stock items. The HVAC relay ships from our Miami warehouse the same or next business day.

Will this relay fit my equipment? Compatibility depends on the model and revision of your existing equipment. If you need help confirming fitment for the HVAC relay, call us at (305) 850-6693 with your unit model number and we will confirm before you order.

Can I get a contractor or wholesale discount? Yes. Cedars HVAC offers volume pricing for licensed HVAC contractors, property managers, and resellers. Request contractor pricing or call us to set up an account.

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