Littelfuse CAP-40/5/440R - 40+5 MFD 370/440V ROUND RUN CAPACITOR
Littelfuse

CAP-40/5/440R

UPC: 811068032830


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Specification Sheet

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Multiplier: 10

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Overview

The Littelfuse CAP-40/5/440R Round Run Capacitor is a high-performance, industrial-grade capacitor engineered to deliver reliable power factor correction and energy storage in demanding motor applications. Designed with a dual capacitance rating of 40+5 MFD and a robust voltage rating of 370/440V, this capacitor ensures stable electrical performance in harsh operating environments. Built by Littelfuse, a global leader in circuit protection and power quality solutions, the CAP-40/5/440R is trusted by professionals across HVAC, manufacturing, and heavy machinery sectors for its durability, efficiency, and long-term reliability. Run capacitors like the Littelfuse CAP-40/5/440R play a critical role in single-phase AC motor circuits by providing the necessary phase shift to generate a rotating magnetic field. This enables motors to start and operate smoothly, reducing mechanical stress and improving energy efficiency. The 40+5 MFD dual capacitance configuration allows for optimized performance in applications requiring both start and run functions, making it ideal for compressors, pumps, fans, and industrial machinery where consistent torque and reduced power consumption are essential. Engineered for industrial durability, the CAP-40/5/440R features a rugged round metal casing designed to withstand high temperatures, vibration, and electrical stress. Its 370/440V voltage rating ensures compatibility with a wide range of international power systems, including those with voltage fluctuations. The capacitor’s compact, round form factor simplifies installation in tight enclosures, while its high-quality dielectric materials and metallized polypropylene construction provide exceptional insulation resistance and extended service life. Professionals in the HVAC, water treatment, and industrial automation sectors rely on Littelfuse capacitors for their proven performance and compliance with industry standards. The CAP-40/5/440R is UL and CE certified, meeting stringent safety and quality benchmarks for global markets. Whether replacing aging components in legacy systems or specifying new installations, engineers and technicians choose Littelfuse for its reputation as a trusted partner in power quality solutions. Key benefits of the Littelfuse CAP-40/5/440R include: - **Superior Power Factor Correction**: Reduces reactive power, lowering utility costs and improving system efficiency. - **High Thermal Stability**: Withstands elevated operating temperatures without performance degradation. - **Dual Capacitance Design**: Optimizes motor starting and running performance with a single component. - **Industrial-Grade Durability**: Resistant to moisture, dust, and mechanical shock for long-term reliability. - **Global Compliance**: Meets UL and CE standards for safe, reliable operation in international installations. Ideal for applications such as air conditioning systems, refrigeration units, industrial pumps, and conveyor motors, the Littelfuse CAP-40/5/440R ensures consistent motor performance, reduced energy waste, and extended equipment lifespan. When reliability and efficiency are non-negotiable, professionals turn to Littelfuse—a brand synonymous with innovation and quality in power management solutions.
  • 40+5 MFD dual capacitance for optimized motor performance
  • 370/440V voltage rating for global compatibility
  • Rugged round metal housing for industrial durability
  • UL and CE certified for safety and compliance
  • Ideal for HVAC, pumps, compressors, and industrial machinery

Specifications

Frequency
50/60 Hz
Material
Metallized Polypropylene
Mounting Type
Metal Casing Mount
Series
CAP
Size
Round
Voltage Rating
370/440 VAC
15+7.5MFD 370/440V ROUND RUN CAPACITOR

CAP-15/7.5/440R

15+7.5MFD 370/440V ROUND RUN CAPACITOR
45+10MFD 370/440V ROUND RUN CAPACITOR

CAP-45/10/440R

45+10MFD 370/440V ROUND RUN CAPACITOR
60-7.5 MFD 370/440V ROUND RUN CAPACITOR

CAP-60/7.5/440R

60-7.5 MFD 370/440V ROUND RUN CAPACITOR
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

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.