Littelfuse CAP-40/7.5/440R - 40+7.5 370/440V ROUND RUN CAPACITOR
Littelfuse

CAP-40/7.5/440R

UPC: 811068032878


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Specification Sheet

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Overview

The Littelfuse CAP-40/7.5/440R is a high-performance round run capacitor engineered to deliver reliable power factor correction and motor starting performance in demanding industrial environments. Designed for continuous operation at 370/440V, this capacitor is a critical component in AC motor systems, ensuring optimal efficiency and extended equipment lifespan. With a robust construction and proven reliability, the CAP-40/7.5/440R is trusted by maintenance professionals, electrical contractors, and industrial facilities worldwide for applications requiring stable voltage regulation and reduced energy costs. Run capacitors like the Littelfuse CAP-40/7.5/440R are essential for single-phase AC motors, where they provide the necessary phase shift to generate a rotating magnetic field. This enables smooth motor startup and efficient operation, particularly in applications where consistent torque and reduced energy consumption are critical. The 40+7.5 microfarad (µF) dual-capacitance design of this model offers versatility, allowing it to support both start and run functions in select motor configurations. Its 370/440V voltage rating ensures compatibility with a wide range of industrial power systems, including those with voltage fluctuations or transient spikes. Industries such as HVAC, refrigeration, manufacturing, and agricultural equipment rely on capacitors like the Littelfuse CAP-40/7.5/440R to maintain system efficiency and prevent motor overheating. In HVAC systems, for example, run capacitors improve the power factor of compressors and fan motors, reducing utility costs and extending component life. Similarly, in conveyor systems, pumps, and machine tools, these capacitors stabilize voltage and enhance performance, minimizing downtime and maintenance expenses. The CAP-40/7.5/440R is particularly well-suited for harsh environments, where exposure to dust, moisture, and temperature extremes could compromise lesser components. Installation and maintenance are straightforward with the Littelfuse CAP-40/7.5/440R, thanks to its compact round metal can design, which facilitates secure mounting and heat dissipation. Professionals should ensure proper voltage matching and secure electrical connections to prevent arcing or failure. Littelfuse’s reputation for quality and durability stems from decades of innovation in circuit protection and power management solutions. The company’s capacitors undergo rigorous testing to meet industry standards, including UL and CE certifications, ensuring compliance with global safety and performance requirements. Choosing the right run capacitor involves evaluating voltage ratings, capacitance values, and environmental conditions. The Littelfuse CAP-40/7.5/440R addresses these needs with a balance of performance, reliability, and cost-effectiveness. Whether replacing an aging capacitor or specifying a new system, engineers and technicians can trust Littelfuse to deliver consistent results. With a focus on reducing energy waste and improving motor efficiency, this capacitor is an investment in operational reliability and long-term savings. For industrial applications where downtime is not an option, the CAP-40/7.5/440R stands as a proven solution backed by a trusted manufacturer.
  • 370/440V voltage rating for industrial motor compatibility
  • 40+7.5 µF dual-capacitance design for versatile applications
  • Compact round metal can for secure mounting and heat dissipation
  • UL and CE certified for global safety and performance standards
  • Trusted by HVAC, manufacturing, and agricultural industries

Specifications

Series
CAP
Size
Round
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.