Resideo DP2040B5003 Contactor

The Resideo DP2040B5003 PowerPro Definite Purpose Contactor is a heavy-duty 2-pole HVAC contactor engineered for reliable switching in air conditioning, refrigeration, and heating systems. This 40-amp contactor serves as the direct replacement for the legacy DP2040B5002, featuring a 120V coil and a DPST contact configuration. Designed for high-cycle applications, it utilizes silver cadmium oxide contacts to ensure superior conductivity and minimize pitting or welding under load. The unit is rated for an ambient temperature range of -4°F to 149°F, making it suitable for demanding rooftop or mechanical room environments. Installation is streamlined via standard 1/4" quick connects and screw terminals, facilitating rapid field service and HVAC compressor troubleshooting. This definite purpose contactor is built to handle inductive loads in condensing units and motor-driven equipment, providing clean circuit interruptions and consistent electrical performance for professional mechanical contractors.

Key Benefits

• Direct Replacement: Seamlessly replaces the DP2040B5002 with identical mounting footprints for fast retrofitting.
• High Current Capacity: Rated for 40 FLA (Full Load Amps), providing robust power handling for commercial and residential motors.
• Enhanced Durability: Silver cadmium oxide contacts provide excellent arc resistance and long-term reliability in high-cycle environments.
• Universal Compatibility: Standard 120Vac coil and dual-pole design work with a wide range of HVACR control circuits.
• Compact Enclosed Design: Protects internal components from debris and prevents dust accumulation on the pole faces.

Common Questions

Can the DP2040B5003 replace a 30-amp contactor?
Yes, this 40-amp contactor can replace a lower-rated 30-amp unit provided the coil voltage (120V) and pole count match, offering a higher safety margin for the load.

What is the difference between the DP2040B5003 and the DP2040A series?
The DP2040B series indicates specific terminal configurations and mounting base designs; always verify the contactor wiring diagram and physical dimensions before installation.

Are the terminals suitable for copper and aluminum wire?
These terminals are primarily designed for copper conductors; ensure proper wire stripping and torque specifications are met to maintain a low-resistance connection.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.