Intermatic DDT40 Complete Adaptive Defrost Timer

Product Description

The INTERMATIC DDT40 is a complete adaptive defrost timer control designed for refrigeration and HVAC applications where automatic defrost cycle management is required. The DDT40 uses adaptive logic to determine defrost intervals based on actual operating conditions rather than fixed time schedules, reducing unnecessary defrost cycles and improving system efficiency. At 1.896 pounds and measuring 6.375 inches by 3.000 inches by 9.125 inches, it is a self-contained unit suitable for field installation by licensed refrigeration technicians and HVAC service professionals.

The DDT40 is used in commercial and residential refrigeration systems that require automatic defrost cycle control. Adaptive defrost technology makes it well-suited for reach-in coolers, walk-in refrigeration units, and similar equipment where defrost frequency directly affects energy consumption and product temperature stability. This control replaces standard fixed-interval defrost timers with a unit that responds to real operating data.

Key Features

• Adaptive defrost logic adjusts cycle frequency based on actual system demand
• Complete control unit — no separate timer module required
• Compact form factor at 6.375 inches by 3.000 inches by 9.125 inches
• Lightweight construction at 1.896 pounds for straightforward mounting
• Suitable for replacement of standard fixed-interval defrost timers

Compatibility

Designed as an OEM-style replacement adaptive defrost timer control for commercial and residential refrigeration systems requiring automatic defrost cycle management.

Installation Notes

Installation should be performed by a licensed HVAC or refrigeration technician. Disconnect and lock out all power to the refrigeration system before removing the existing defrost timer or control. Verify wiring connections against the equipment wiring diagram before restoring power. Follow applicable NEC guidelines for low-voltage control wiring during installation.

Technical Specifications

• Weight: 1.896 pounds
• Length: 6.375 inches
• Width: 3.000 inches
• Height: 9.125 inches
• UPC: 07827514854

Standard Information

• Brand: INTERMATIC
• Manufacturer Part Number: DDT40