Eaton C25BNB240B (45GG20AG) Contactor

The Eaton C25BNB240B is a professional-grade 2-pole definite purpose contactor engineered for heavy-duty switching in HVACR systems. Rated for 40 amps (inductive load) and 50 amps (resistive load), this non-reversing contactor serves as a direct replacement for the 45GG20AG and is compatible with a wide range of air conditioning units, heat pumps, and refrigeration equipment. It operates with a 208-240V AC coil at 50/60 Hz, ensuring consistent performance in both residential and commercial power environments. The open-type enclosure combined with a durable metal mounting plate allows for efficient heat dissipation and secure installation in control panels. For wiring versatility, it features side-by-side binding head screw terminals and quick-connect terminals, enabling technicians to maintain low contact resistance and secure terminations during field service or new system builds.

• Universal Compatibility: Interchanges directly with standard 40A 2-pole units like the 45GG20AG, simplifying inventory for service trucks.
• High-Amperage Capacity: Built to handle the high-inrush current demands of modern compressors and resistive heating loads.
• Compact Form Factor: The space-saving frame allows for easy retrofitting in tight electrical cabinets without modifying existing layouts.
• Dual Connection Options: Features both screws and 1/4-inch quick-connect tabs, providing flexibility for various wiring configurations.
• Industry Compliance: UL Recognized and CSA Certified to meet strict safety protocols for HVACR equipment.

Can I use this contactor for 3-phase applications?
No, the C25BNB240B is a 2-pole device designed for single-phase loads. For 3-phase systems, a 3-pole contactor is required to break all three power legs.

Will this coil operate on a 120V control circuit?
No, this specific model requires a 208V to 240V signal to energize the coil. Using a 120V signal will fail to pull the contacts in, potentially damaging the system.

What is the difference between this and a 1.5-pole contactor?
This is a true 2-pole contactor, meaning both power legs are disconnected when the coil is de-energized, providing a safer isolation of the load compared to 1.5-pole units that keep one leg hot.

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.