[Lifetime Warranty] 3 Pole 40 Amp Contactor 120 VAC Coil Definite Purpose Contactor

3 Pole 40 Amp Contactor 120V Coil DP Contactor HVAC Contactor 42CF35AF Equivalent

Key Features

• Type: Definite Purpose (DP) Contactor
• Poles: 3 Pole
• Full Load Amperage (FLA): 40 Amp
• Coil Voltage: 120V AC
• Frequency: 50/60 Hz
• Contacts: Silver alloy construction
• Certifications: UL Listed, A2L refrigerant system compliant

Replaces / Cross-Reference Part Numbers

• Siemens / Furnas: 42CF35AF
• Eaton: C25DNF340A

Compatibility & Fitment

• Designed for HVAC systems, including air conditioners and heat pumps.
• Direct replacement for 3-pole contactors with a 120V coil.
• Suitable for applications requiring a 20A, 25A, 30A, 35A, or 40A contactor.

When to Replace

• Outdoor condenser unit fails to start.
• Visible arcing, pitting, or burning on the contacts.
• Loud buzzing or chattering noise from the contactor during operation.
• Coil shows no continuity when tested with a multimeter.
• Contactor is physically stuck in the open or closed position.

Installation Tips

• Disconnect all electrical power at the circuit breaker and service disconnect before installation.
• Confirm power is off using a voltage meter.
• Photograph or label existing wire connections to ensure correct reassembly.
• Securely tighten all terminal connections to prevent overheating.
• Ensure the replacement contactor's voltage and amperage ratings match the system's requirements.