MARS 12890 Run Capacitor
The MARS 12890 Run Capacitor is a high-performance 45/5 Microfarad 440Vac Oval Dual Run Capacitor engineered specifically for heavy-duty HVAC service applications. Designed to support both the compressor and the condenser fan motor, this dual-rated component provides the critical phase shift required for high-torque startups and continuous running efficiency in PSC (Permanent Split Capacitor) outdoor units. The 440V run capacitor rating ensures robust dielectric strength, allowing it to withstand voltage spikes and high-demand cycles far more effectively than standard 370V alternatives. Built as an upgrade replacement for the MARS 12190, it features a non-PCB, oil-filled interior and a hermetically sealed aluminum housing for superior heat dissipation and environmental protection. With a wide operating temperature range from -40°C to 70°C and a physical internal interrupter for fail-safe circuit protection, this dual run capacitor for HVAC is a reliable choice for maintaining motor efficiency and preventing premature winding failure in residential and light commercial condensers.
Key Benefits- Dual-Rated Performance: Consolidates 45 MFD for the compressor and 5 MFD for the fan motor into a single space-saving oval canister.
- Enhanced 440V Rating: Provides superior resistance to electrical fatigue and voltage surges compared to lower-rated 370V capacitors.
- Industrial-Grade Build: UL recognized and manufactured to EIA-456-A standards, utilizing metallized polypropylene film for stable capacitance.
- Direct MARS Compatibility: Serves as a perfect drop-in replacement for MARS 12890 and the older 12190 models.
Can I use an oval capacitor to replace a round one?
Yes, as long as the 45/5 MFD rating and the voltage meet or exceed the original specs. Ensure the mounting bracket is adjusted to secure the oval form factor properly during installation.
Why is the 440V rating better than the 370V?
A 440V capacitor is built with thicker dielectric material, allowing it to operate cooler and survive longer in high-ambient environments where voltage fluctuations are common.
Exactly how do the four terminal connections work?
Terminals are typically marked "C" (Common), "HERM" (Compressor), and "FAN" (Condenser Fan). Verify lead placement with your wiring diagram to ensure proper motor startup and rotation.
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.
Original: $15.95
-65%$15.95
$5.58MARS 12890 Run Capacitor
The MARS 12890 Run Capacitor is a high-performance 45/5 Microfarad 440Vac Oval Dual Run Capacitor engineered specifically for heavy-duty HVAC service applications. Designed to support both the compressor and the condenser fan motor, this dual-rated component provides the critical phase shift required for high-torque startups and continuous running efficiency in PSC (Permanent Split Capacitor) outdoor units. The 440V run capacitor rating ensures robust dielectric strength, allowing it to withstand voltage spikes and high-demand cycles far more effectively than standard 370V alternatives. Built as an upgrade replacement for the MARS 12190, it features a non-PCB, oil-filled interior and a hermetically sealed aluminum housing for superior heat dissipation and environmental protection. With a wide operating temperature range from -40°C to 70°C and a physical internal interrupter for fail-safe circuit protection, this dual run capacitor for HVAC is a reliable choice for maintaining motor efficiency and preventing premature winding failure in residential and light commercial condensers.
Key Benefits- Dual-Rated Performance: Consolidates 45 MFD for the compressor and 5 MFD for the fan motor into a single space-saving oval canister.
- Enhanced 440V Rating: Provides superior resistance to electrical fatigue and voltage surges compared to lower-rated 370V capacitors.
- Industrial-Grade Build: UL recognized and manufactured to EIA-456-A standards, utilizing metallized polypropylene film for stable capacitance.
- Direct MARS Compatibility: Serves as a perfect drop-in replacement for MARS 12890 and the older 12190 models.
Can I use an oval capacitor to replace a round one?
Yes, as long as the 45/5 MFD rating and the voltage meet or exceed the original specs. Ensure the mounting bracket is adjusted to secure the oval form factor properly during installation.
Why is the 440V rating better than the 370V?
A 440V capacitor is built with thicker dielectric material, allowing it to operate cooler and survive longer in high-ambient environments where voltage fluctuations are common.
Exactly how do the four terminal connections work?
Terminals are typically marked "C" (Common), "HERM" (Compressor), and "FAN" (Condenser Fan). Verify lead placement with your wiring diagram to ensure proper motor startup and rotation.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The MARS 12890 Run Capacitor is a high-performance 45/5 Microfarad 440Vac Oval Dual Run Capacitor engineered specifically for heavy-duty HVAC service applications. Designed to support both the compressor and the condenser fan motor, this dual-rated component provides the critical phase shift required for high-torque startups and continuous running efficiency in PSC (Permanent Split Capacitor) outdoor units. The 440V run capacitor rating ensures robust dielectric strength, allowing it to withstand voltage spikes and high-demand cycles far more effectively than standard 370V alternatives. Built as an upgrade replacement for the MARS 12190, it features a non-PCB, oil-filled interior and a hermetically sealed aluminum housing for superior heat dissipation and environmental protection. With a wide operating temperature range from -40°C to 70°C and a physical internal interrupter for fail-safe circuit protection, this dual run capacitor for HVAC is a reliable choice for maintaining motor efficiency and preventing premature winding failure in residential and light commercial condensers.
Key Benefits- Dual-Rated Performance: Consolidates 45 MFD for the compressor and 5 MFD for the fan motor into a single space-saving oval canister.
- Enhanced 440V Rating: Provides superior resistance to electrical fatigue and voltage surges compared to lower-rated 370V capacitors.
- Industrial-Grade Build: UL recognized and manufactured to EIA-456-A standards, utilizing metallized polypropylene film for stable capacitance.
- Direct MARS Compatibility: Serves as a perfect drop-in replacement for MARS 12890 and the older 12190 models.
Can I use an oval capacitor to replace a round one?
Yes, as long as the 45/5 MFD rating and the voltage meet or exceed the original specs. Ensure the mounting bracket is adjusted to secure the oval form factor properly during installation.
Why is the 440V rating better than the 370V?
A 440V capacitor is built with thicker dielectric material, allowing it to operate cooler and survive longer in high-ambient environments where voltage fluctuations are common.
Exactly how do the four terminal connections work?
Terminals are typically marked "C" (Common), "HERM" (Compressor), and "FAN" (Condenser Fan). Verify lead placement with your wiring diagram to ensure proper motor startup and rotation.
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.
