Schneider Electric (Square D) 8910DPA43V09 Contactor

The Schneider Electric (Square D) 8910DPA43V09 Contactor is a heavy-duty 3-pole definite purpose contactor engineered for demanding HVACR applications, including commercial refrigeration and large tonnage air conditioning units. Rated for 40 FLA (Full Load Amperes) and 50A resistive loads, this Type DPA component provides reliable motor switching for 3-phase systems up to 600VAC. The 208-240V AC coil is optimized for high-voltage control circuits, ensuring positive engagement and reduced arcing across the normally open (NO) contacts. Designed for direct compatibility, the 8910DPA43V09 is the direct replacement for CTR1163, Furnas 42CF35AG, and Cutler Hammer C25DNF340B. Featuring straight-through wiring with box lugs and quick-connect terminals, it allows for efficient field installation and auxiliary contact integration. Its compact, open-frame design supports panel mounting or optional DIN rail attachment, meeting the rigorous demands of veteran contractors seeking to restore system performance with OEM-grade Schneider Electric reliability.

• High Inductive Capacity: Rated for 40A inductive and 50A resistive loads, handling up to 25 HP at 575V AC for heavy machinery.
• Versatile Coil Range: Reliable operation at 208-240V 60Hz or 220V 50Hz, ideal for varied commercial power supplies.
• Standardized Footprint: Direct physical and electrical replacement for CTR1163 and C25DNF340B, reducing downtime during service calls.
• Robust Connection Ports: Features both binder head screws and quick-connect terminals for flexible, secure conductor termination.
• Field Expandable: Supports the addition of snap-on auxiliary contact blocks (9999D series) for secondary control circuit logic.

Is the 8910DPA43V09 compatible with single-phase systems?
While this is a 3-pole contactor designed for 3-phase motor control, it can be used for single-phase applications by utilizing only two of its poles. Ensure the 40 amp inductive rating matches your compressor or motor requirements.

Can I replace a 24V contactor with this 208-240VAC model?
No. You must match the control circuit voltage precisely. This model requires a 208-240V control signal to energize the coil; attempting to use a 24V transformer signal will fail to pull in the contacts.

What is the difference between this and a general-purpose contactor?
Definite purpose (DP) contactors like the Square D 8910DPA43V09 are specifically calibrated for the high-cycle, high-inrush currents typical of HVACR compressors and fan motors, offering a more compact and cost-effective solution than NEMA-rated general-purpose starters.

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.