Littelfuse CAP-4/440 - 4MFD 370/440V OVAL RUN CAPACITOR
Littelfuse

CAP-4/440

UPC: 811068035718


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Specification Sheet

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Minimum Qty: 10

Multiplier: 10

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Overview

The Littelfuse CAP-4/440 4MFD 370/440V Oval Run Capacitor is a premium-grade electrical component engineered to optimize the performance of industrial motors and machinery. Designed for continuous operation in demanding environments, this capacitor delivers consistent capacitance and voltage handling to ensure smooth motor startup, reduced energy consumption, and extended equipment lifespan. With a capacitance rating of 4 microfarads (MFD) and a dual voltage rating of 370/440V, the CAP-4/440 is optimized for use in single-phase motors where reliable run-phase performance is critical. Whether deployed in HVAC systems, pumps, compressors, or manufacturing equipment, this capacitor provides the stability needed to maintain operational efficiency under variable load conditions. Built to meet the rigorous demands of industrial applications, the Littelfuse CAP-4/440 features a robust oval-shaped housing that enhances thermal dissipation and mechanical durability. This design minimizes the risk of overheating and ensures long-term reliability even in high-temperature or high-vibration environments. The capacitor’s construction is compliant with industry standards, offering protection against moisture, dust, and electrical surges—key factors in maintaining performance integrity in harsh industrial settings. Selecting the right run capacitor is essential for motor efficiency and longevity. Professionals in the industrial sector rely on Littelfuse for its reputation as a trusted manufacturer of high-performance electrical components. With decades of experience in power protection and control, Littelfuse capacitors are trusted by engineers and maintenance teams worldwide. The CAP-4/440 is no exception, offering a balance of precision engineering, durability, and cost-effectiveness that makes it a preferred choice for OEMs and repair technicians alike. Installation of the CAP-4/440 is straightforward, with clearly marked terminals for easy wiring in compliance with electrical codes. It is designed for direct replacement in existing systems or integration into new motor assemblies. Regular inspection and maintenance of the capacitor can prevent premature motor failure and reduce unplanned downtime—critical considerations in high-stakes industrial operations. Ideal for applications such as air handling units, refrigeration systems, conveyor belts, and industrial fans, the Littelfuse CAP-4/440 ensures that motors operate at peak efficiency, reducing energy waste and lowering operational costs. Its compact oval form factor allows for flexible mounting options, even in space-constrained installations. Backed by Littelfuse’s global support network and adherence to international quality standards, the CAP-4/440 delivers the performance and peace of mind required in today’s fast-paced industrial landscape.
  • 4 MFD capacitance for optimal motor run performance
  • Dual voltage rating 370/440V for versatile application
  • Oval housing design for improved thermal management and durability
  • Ideal for HVAC, pumps, compressors, and industrial machinery
  • Trusted Littelfuse quality with global support and compliance

Specifications

Material
Poly
Series
CAP-4/440
Size
Oval
Voltage Rating
370/440 VAC
30+5 MFD 370/440V ROUND RUN CAPACITOR

CAP-30/5/440R

30+5 MFD 370/440V ROUND RUN CAPACITOR
30+15MFD 370/440V ROUND RUN CAPACITOR

CAP-30/15/440R

30+15MFD 370/440V ROUND RUN CAPACITOR
35+15MFD 370/440V ROUND RUN CAPACITOR

CAP-35/15/440R

35+15MFD 370/440V ROUND RUN CAPACITOR
20+10MFD 370/440V ROUND RUN CAPACITOR

CAP-20/10/440R

20+10MFD 370/440V ROUND RUN CAPACITOR
30+7.5MFD 370/440V ROUND RUN CAPACITOR

CAP-30/7.5/440R

30+7.5MFD 370/440V ROUND RUN CAPACITOR
15+3MFD 370/440V ROUND RUN CAPACITOR

CAP-15/3/440R

15+3MFD 370/440V ROUND RUN CAPACITOR
4MFD 370/440V ROUND RUN CAPACITOR

CAP-4/440R

4MFD 370/440V ROUND RUN CAPACITOR
40+4MFD 370/440V ROUND RUN CAPACITOR

CAP-40/4/440R

40+4MFD 370/440V ROUND RUN CAPACITOR
55MFD 370/440V OVAL RUN CAPACITOR

CAP-55/440

55MFD 370/440V OVAL 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

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.