Copeland Comfort Control (White Rodgers) 120-105851 Coil

The Copeland Comfort Control (White Rodgers) 120-105851 Coil is a robust SPNO 12VDC solenoid coil engineered for heavy-duty DC contactor applications. Designed as a high-reliability replacement part, this 12V DC solenoid 120-105851 features a Single Pole Normal Open (SPNO) configuration with a grounded coil, ensuring stable operation in demanding electrical environments. Technicians often utilize this component in heavy equipment, automotive auxiliary systems, and HVACR power distribution where high-amperage switching is required. The coil is built to withstand thermal cycling and vibration, maintaining electrical integrity across extended duty cycles. When installing this replacement 12V solenoid, ensure proper lead termination and mounting to guarantee direct solenoid coil compatibility with White Rodgers 120 series contactors. This White Rodgers 120-105851 replacement delivers consistent electromagnetic force to engage internal contacts effectively, minimizing voltage drops and preventing arcing under sustained loads in industrial applications.

Key Benefits for Field Application

• Heavy-Duty SPNO Configuration: Optimized for high-current DC switching in professional-grade power distribution setups.
• High-Integrity Grounded Coil: Ensures stable magnetic field generation and reliable circuit grounding for long-term field performance.
• Industrial Build Quality: Constructed to resist environmental stressors typical in commercial and automotive electrical panels.
• OEM Compatibility: Precision-engineered as a direct-fit component for White Rodgers 120 series solenoids, reducing downtime during maintenance.

Common Technical Questions

What are the typical symptoms of a failing 12V solenoid coil?
Indicators include an audible "clicking" without contact engagement, a complete lack of continuity across the coil terminals, or visible thermal damage to the coil casing from over-voltage or excessive duty cycles.

Is the 120-105851 suitable for continuous duty applications?
This specific coil is designed for high-current switching; however, technicians should verify the specific duty cycle rating of the 120 series frame it is being installed into to ensure it matches the application requirements.

How do I verify the grounded coil configuration?
The grounded coil design generally means one side of the coil is internally connected to the solenoid housing, which requires proper chassis grounding for the circuit to complete during installation.

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.