
MARS 11955 Start Capacitor
The MARS 11955 Start Capacitor is a standard-setting solution for single-phase motor ignition in high-demand HVACR environments. Engineered for heavy-duty commercial and industrial applications, this 21-25 MFD 330Vac round start capacitor provides the necessary torque to drive compressors and motors during the critical startup phase. Constructed with a hermetically sealed black Bakelite case, the unit is immune to oil, moisture, and grease, ensuring durability in harsh mechanical rooms. This JARD 11955 cross-reference part features a compact footprint, making it the preferred choice for HVAC motor replacement where space within the electrical cabinet is limited. Optimized for 50/60 Hz systems, it operates reliably within a temperature range of -40°C to +65°C. For contractors performing a capacitor test and replacement, the MARS 11955 meets dual UL and CUL standards, providing consistent electrical performance. Integrating this 330V motor start capacitor into your service routine ensures rapid motor acceleration and reduced stress on electrical windings during high-torque startup cycles.
Key Benefits- Durable Phenolic Composition: The black Bakelite casing offers superior protection against environmental contaminants like dirt and moisture.
- Compact Design: With a case height of 3.375 inches and a width of 1.812 inches, it facilitates easy fitment in tight control boxes.
- High-Voltage Resilience: Rated for up to 330Vac, providing a robust safety margin for 110V and 240V motor applications.
- Universal Compatibility: Effective for starting single-phase AC motors in air conditioners, heat pumps, and refrigeration units.
Can I use the MARS 11955 if my current capacitor has a slightly different MFD range?
This capacitor is rated for 21-25 Microfarads. It is critical to match the MFD range of your motor's specifications; using a rating that is too high or too low can cause improper motor torque or winding overheating.
What is the difference between this 330V rating and a 250V capacitor?
Voltage ratings on capacitors indicate the maximum electrical pressure they can handle. You can always replace a lower-voltage capacitor with a higher-voltage one (e.g., replacing 250V with 330V), but never vice versa.
How do I know if this start capacitor has failed?
Common indicators include the motor "humming" but not turning over, visible bulging of the Bakelite casing, or a reading outside the 21-25 MFD range when tested with a multimeter.
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.
MARS 11955 Start Capacitor
The MARS 11955 Start Capacitor is a standard-setting solution for single-phase motor ignition in high-demand HVACR environments. Engineered for heavy-duty commercial and industrial applications, this 21-25 MFD 330Vac round start capacitor provides the necessary torque to drive compressors and motors during the critical startup phase. Constructed with a hermetically sealed black Bakelite case, the unit is immune to oil, moisture, and grease, ensuring durability in harsh mechanical rooms. This JARD 11955 cross-reference part features a compact footprint, making it the preferred choice for HVAC motor replacement where space within the electrical cabinet is limited. Optimized for 50/60 Hz systems, it operates reliably within a temperature range of -40°C to +65°C. For contractors performing a capacitor test and replacement, the MARS 11955 meets dual UL and CUL standards, providing consistent electrical performance. Integrating this 330V motor start capacitor into your service routine ensures rapid motor acceleration and reduced stress on electrical windings during high-torque startup cycles.
Key Benefits- Durable Phenolic Composition: The black Bakelite casing offers superior protection against environmental contaminants like dirt and moisture.
- Compact Design: With a case height of 3.375 inches and a width of 1.812 inches, it facilitates easy fitment in tight control boxes.
- High-Voltage Resilience: Rated for up to 330Vac, providing a robust safety margin for 110V and 240V motor applications.
- Universal Compatibility: Effective for starting single-phase AC motors in air conditioners, heat pumps, and refrigeration units.
Can I use the MARS 11955 if my current capacitor has a slightly different MFD range?
This capacitor is rated for 21-25 Microfarads. It is critical to match the MFD range of your motor's specifications; using a rating that is too high or too low can cause improper motor torque or winding overheating.
What is the difference between this 330V rating and a 250V capacitor?
Voltage ratings on capacitors indicate the maximum electrical pressure they can handle. You can always replace a lower-voltage capacitor with a higher-voltage one (e.g., replacing 250V with 330V), but never vice versa.
How do I know if this start capacitor has failed?
Common indicators include the motor "humming" but not turning over, visible bulging of the Bakelite casing, or a reading outside the 21-25 MFD range when tested with a multimeter.
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
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Shipping & Returns
Description
The MARS 11955 Start Capacitor is a standard-setting solution for single-phase motor ignition in high-demand HVACR environments. Engineered for heavy-duty commercial and industrial applications, this 21-25 MFD 330Vac round start capacitor provides the necessary torque to drive compressors and motors during the critical startup phase. Constructed with a hermetically sealed black Bakelite case, the unit is immune to oil, moisture, and grease, ensuring durability in harsh mechanical rooms. This JARD 11955 cross-reference part features a compact footprint, making it the preferred choice for HVAC motor replacement where space within the electrical cabinet is limited. Optimized for 50/60 Hz systems, it operates reliably within a temperature range of -40°C to +65°C. For contractors performing a capacitor test and replacement, the MARS 11955 meets dual UL and CUL standards, providing consistent electrical performance. Integrating this 330V motor start capacitor into your service routine ensures rapid motor acceleration and reduced stress on electrical windings during high-torque startup cycles.
Key Benefits- Durable Phenolic Composition: The black Bakelite casing offers superior protection against environmental contaminants like dirt and moisture.
- Compact Design: With a case height of 3.375 inches and a width of 1.812 inches, it facilitates easy fitment in tight control boxes.
- High-Voltage Resilience: Rated for up to 330Vac, providing a robust safety margin for 110V and 240V motor applications.
- Universal Compatibility: Effective for starting single-phase AC motors in air conditioners, heat pumps, and refrigeration units.
Can I use the MARS 11955 if my current capacitor has a slightly different MFD range?
This capacitor is rated for 21-25 Microfarads. It is critical to match the MFD range of your motor's specifications; using a rating that is too high or too low can cause improper motor torque or winding overheating.
What is the difference between this 330V rating and a 250V capacitor?
Voltage ratings on capacitors indicate the maximum electrical pressure they can handle. You can always replace a lower-voltage capacitor with a higher-voltage one (e.g., replacing 250V with 330V), but never vice versa.
How do I know if this start capacitor has failed?
Common indicators include the motor "humming" but not turning over, visible bulging of the Bakelite casing, or a reading outside the 21-25 MFD range when tested with a multimeter.
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.












