Littelfuse CAP-55/15/440R - 55+15MFD 370/440V ROUND RUN CAPACITOR
Littelfuse

CAP-55/15/440R

UPC: 811068033394


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Overview

The Littelfuse CAP-55/15/440R Round Run Capacitor is a high-performance, dual-value capacitor engineered to deliver reliable phase shift and power factor correction in industrial motor applications. Designed with a capacitance of 55+15 microfarads (µF) and a robust voltage rating of 370/440V, this capacitor is built to withstand the rigors of heavy-duty industrial environments, including HVAC systems, compressors, pumps, and other motor-driven machinery. Its round, compact design ensures easy installation in tight spaces, while the durable construction provides long-term reliability under fluctuating loads and extreme temperatures. This capacitor is a critical component in single-phase induction motors, where it creates the necessary phase shift between the start and run windings to ensure smooth and efficient motor operation. The dual capacitance values (55µF and 15µF) allow for optimized performance across a range of load conditions, reducing energy consumption and extending motor lifespan. Whether used in commercial refrigeration units, air handling systems, or industrial machinery, the CAP-55/15/440R helps maintain consistent torque and reduces voltage spikes that can damage sensitive components. Littelfuse, a global leader in circuit protection and power management solutions, has designed this capacitor to meet the stringent demands of industrial applications. The CAP-55/15/440R is manufactured to comply with industry standards, ensuring compatibility with a wide range of motor systems. Its high-quality dielectric materials and corrosion-resistant terminals provide exceptional durability, even in harsh operating conditions. Professionals in the HVAC, manufacturing, and utilities sectors trust Littelfuse capacitors for their proven performance and long service life. When selecting a run capacitor for industrial motors, key considerations include voltage rating, capacitance tolerance, and environmental durability. The CAP-55/15/440R excels in all these areas, offering a voltage rating of 370/440V to handle transient surges and a capacitance tolerance that ensures precise phase shift. Installation is straightforward, with standard mounting configurations and color-coded terminals for easy wiring. Regular maintenance checks, such as verifying capacitance and inspecting for physical damage, will help maximize the capacitor’s lifespan and prevent unexpected downtime. For engineers and maintenance professionals seeking a dependable run capacitor, the Littelfuse CAP-55/15/440R delivers unmatched reliability and efficiency. Its robust design, adherence to industry standards, and compatibility with a broad spectrum of industrial motors make it an ideal choice for optimizing motor performance and reducing operational costs. Trust Littelfuse for high-quality electrical components that enhance system reliability and longevity.
  • Dual capacitance values (55µF + 15µF) for optimized motor performance
  • Voltage rating of 370/440V for handling transient surges
  • Compact round design for easy installation in tight spaces
  • Durable construction for long-term reliability in harsh environments
  • Trusted by professionals in HVAC, compressors, and industrial machinery

Specifications

Mounting Type
Standard Mounting
Series
CAP
Size
Round, compact
Voltage Rating
370/440V
25+3MFD 370/440V OVAL RUN CAPACITOR

CAP-25/3/440

25+3MFD 370/440V OVAL RUN CAPACITOR
5MFD 370/440V ROUND RUN CAPACITOR

CAP-5/440R

5MFD 370/440V ROUND RUN CAPACITOR
50+5MFD 370/440V ROUND RUN CAPACITOR

CAP-50/5/440R

50+5MFD 370/440V ROUND RUN CAPACITOR
25+15MFD 370/440V OVAL RUN CAPACITOR

CAP-25/15/440

25+15MFD 370/440V OVAL RUN CAPACITOR
30+7.5MFD 370/440V OVAL RUN CAPACITOR

CAP-30/7.5/440

30+7.5MFD 370/440V OVAL RUN CAPACITOR
17.5 MFD 370/440V OVAL RUN CAPACITOR

CAP-17.5/440

17.5 MFD 370/440V OVAL RUN CAPACITOR
5 MFD 370/440V OVAL RUN CAPACITOR

CAP-5/440

5 MFD 370/440V OVAL RUN CAPACITOR
20+7.5MFD 370/440V ROUND RUN CAPACITOR

CAP-20/7.5/440R

20+7.5MFD 370/440V ROUND RUN CAPACITOR
35+10MFD 370/440V OVAL RUN CAPACITOR

CAP-35/10/440

35+10MFD 370/440V OVAL RUN CAPACITOR
30+5MFD 370/440V OVAL RUN CAPACITOR

CAP-30/5/440

30+5MFD 370/440V OVAL RUN CAPACITOR
35+3 MFD 370/440V ROUND RUN CAPACITOR

CAP-35/3/440R

35+3 MFD 370/440V ROUND RUN CAPACITOR
30+5 MFD 370/440V ROUND RUN CAPACITOR

CAP-30/5/440R

30+5 MFD 370/440V ROUND RUN CAPACITOR

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.