MARS 11987 Start Capacitor
The MARS 11987 Start Capacitor is a professional-grade component designed to provide the high torque required for starting electric motors in HVACR systems. This round motor start capacitor features a capacitance range of 340-408 MFD and is rated for 220/250VAC applications. Engineered for reliability in demanding environments, it utilizes a rugged phenolic case to protect internal components from moisture and oil. Typically used with compressors and blower motors, this unit operates efficiently across a broad temperature range of -40°C to +65°C. For contractors performing field replacements, the MARS 11987 offers dual terminals for quick connection and a standard 1.812-inch diameter for compatibility with existing mounting brackets. Integrating a high-quality HVAC start capacitor ensures smoother motor ignition and reduces the electrical stress on windings during the high-amperage startup phase.
Key Benefits for HVACR Applications
- Broad Capacitance Range: The 340-408 microfarad rating ensures high starting torque for heavy-duty 250V motor applications.
- Industrial Durability: Constructed with a moisture-resistant phenolic resin case to prevent premature failure in harsh mechanical rooms.
- Standardized Dimensions: With a 3.375-inch case height and 1.812-inch width, it serves as a direct replacement start capacitor for many OEM 11987 specifications.
- Thermal Stability: Designed to maintain consistent microfarad (MFD) output even in extreme ambient temperatures.
- Universal Compatibility: Operates at 50/60 Hz, making it suitable for both domestic and international motor start requirements.
Common Questions
Is the 340-408 MFD 250V capacitor compatible with 220V systems?
Yes, this capacitor rating is designed for 220/250VAC applications. The voltage rating on a start capacitor indicates the maximum voltage it can handle; therefore, a 250V unit is a proper choice for 208V or 230V circuits.
Can this replace a capacitor with a smaller microfarad range?
It is critical to match the MFD range specified by the motor manufacturer. Installing a MARS 11987 where a lower capacitance is required can lead to excessive winding heat and potential motor damage.
What is the difference between this and a run capacitor?
A motor start capacitor like the 11987 is designed for intermittent duty only, providing a boost during the first few seconds of startup before being switched out of the circuit by a potential relay or centrifugal switch. It cannot be used for continuous run duty.
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: $21.74
-65%$21.74
$7.61MARS 11987 Start Capacitor
The MARS 11987 Start Capacitor is a professional-grade component designed to provide the high torque required for starting electric motors in HVACR systems. This round motor start capacitor features a capacitance range of 340-408 MFD and is rated for 220/250VAC applications. Engineered for reliability in demanding environments, it utilizes a rugged phenolic case to protect internal components from moisture and oil. Typically used with compressors and blower motors, this unit operates efficiently across a broad temperature range of -40°C to +65°C. For contractors performing field replacements, the MARS 11987 offers dual terminals for quick connection and a standard 1.812-inch diameter for compatibility with existing mounting brackets. Integrating a high-quality HVAC start capacitor ensures smoother motor ignition and reduces the electrical stress on windings during the high-amperage startup phase.
Key Benefits for HVACR Applications
- Broad Capacitance Range: The 340-408 microfarad rating ensures high starting torque for heavy-duty 250V motor applications.
- Industrial Durability: Constructed with a moisture-resistant phenolic resin case to prevent premature failure in harsh mechanical rooms.
- Standardized Dimensions: With a 3.375-inch case height and 1.812-inch width, it serves as a direct replacement start capacitor for many OEM 11987 specifications.
- Thermal Stability: Designed to maintain consistent microfarad (MFD) output even in extreme ambient temperatures.
- Universal Compatibility: Operates at 50/60 Hz, making it suitable for both domestic and international motor start requirements.
Common Questions
Is the 340-408 MFD 250V capacitor compatible with 220V systems?
Yes, this capacitor rating is designed for 220/250VAC applications. The voltage rating on a start capacitor indicates the maximum voltage it can handle; therefore, a 250V unit is a proper choice for 208V or 230V circuits.
Can this replace a capacitor with a smaller microfarad range?
It is critical to match the MFD range specified by the motor manufacturer. Installing a MARS 11987 where a lower capacitance is required can lead to excessive winding heat and potential motor damage.
What is the difference between this and a run capacitor?
A motor start capacitor like the 11987 is designed for intermittent duty only, providing a boost during the first few seconds of startup before being switched out of the circuit by a potential relay or centrifugal switch. It cannot be used for continuous run duty.
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 11987 Start Capacitor is a professional-grade component designed to provide the high torque required for starting electric motors in HVACR systems. This round motor start capacitor features a capacitance range of 340-408 MFD and is rated for 220/250VAC applications. Engineered for reliability in demanding environments, it utilizes a rugged phenolic case to protect internal components from moisture and oil. Typically used with compressors and blower motors, this unit operates efficiently across a broad temperature range of -40°C to +65°C. For contractors performing field replacements, the MARS 11987 offers dual terminals for quick connection and a standard 1.812-inch diameter for compatibility with existing mounting brackets. Integrating a high-quality HVAC start capacitor ensures smoother motor ignition and reduces the electrical stress on windings during the high-amperage startup phase.
Key Benefits for HVACR Applications
- Broad Capacitance Range: The 340-408 microfarad rating ensures high starting torque for heavy-duty 250V motor applications.
- Industrial Durability: Constructed with a moisture-resistant phenolic resin case to prevent premature failure in harsh mechanical rooms.
- Standardized Dimensions: With a 3.375-inch case height and 1.812-inch width, it serves as a direct replacement start capacitor for many OEM 11987 specifications.
- Thermal Stability: Designed to maintain consistent microfarad (MFD) output even in extreme ambient temperatures.
- Universal Compatibility: Operates at 50/60 Hz, making it suitable for both domestic and international motor start requirements.
Common Questions
Is the 340-408 MFD 250V capacitor compatible with 220V systems?
Yes, this capacitor rating is designed for 220/250VAC applications. The voltage rating on a start capacitor indicates the maximum voltage it can handle; therefore, a 250V unit is a proper choice for 208V or 230V circuits.
Can this replace a capacitor with a smaller microfarad range?
It is critical to match the MFD range specified by the motor manufacturer. Installing a MARS 11987 where a lower capacitance is required can lead to excessive winding heat and potential motor damage.
What is the difference between this and a run capacitor?
A motor start capacitor like the 11987 is designed for intermittent duty only, providing a boost during the first few seconds of startup before being switched out of the circuit by a potential relay or centrifugal switch. It cannot be used for continuous run duty.
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.
