Littelfuse CAP-40/3/440R - 40+3MFD 370/440V ROUND RUN CAPACITOR
Littelfuse

CAP-40/3/440R

UPC: 811068032755


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Specification Sheet

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Minimum Qty: 10

Multiplier: 10

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Overview

The Littelfuse CAP-40/3/440R is a robust and high-performance dual-run capacitor engineered to meet the demanding requirements of industrial motor applications. Designed for reliability and efficiency, this 40+3 microfarad (µF) capacitor operates across a dual voltage rating of 370/440 Volts AC, making it a versatile component for a wide array of industrial machinery. Its primary function is to provide the necessary phase shift for starting and running single-phase AC induction motors, ensuring optimal torque and smooth operation. By supplying the correct capacitance, the CAP-40/3/440R significantly contributes to motor efficiency, reduces energy consumption, and extends the operational lifespan of the equipment. This round run capacitor is an essential component in various industrial sectors. It is frequently specified for use in HVAC systems, including air conditioning units and furnaces, where reliable motor performance is critical for climate control. Furthermore, it is a key element in powering compressors found in refrigeration systems, industrial air compressors, and other pneumatic equipment. Its durable construction is designed to withstand the challenging operating conditions often encountered in industrial environments, such as fluctuating temperatures, humidity, and vibration. The Littelfuse CAP-40/3/440R is built with quality materials to ensure consistent performance and longevity, minimizing downtime and maintenance costs for businesses. Key specifications and benefits of the Littelfuse CAP-40/3/440R include: * **Capacitance:** 40µF (start) + 3µF (run) – providing optimal starting torque and efficient running performance for single-phase motors. * **Voltage Rating:** 370/440V AC – suitable for a broad range of industrial power supplies. * **Configuration:** Round – a common and easily integrated form factor for motor applications. * **Manufacturer:** Littelfuse – a trusted name in industrial electrical components, known for quality and reliability. * **Application Versatility:** Ideal for HVAC, compressors, pumps, fans, and other industrial motor-driven equipment. Selecting the correct run capacitor is paramount for motor health and system efficiency. The dual capacitance values of the CAP-40/3/440R are specifically designed to cater to the distinct needs of motor start and run phases, ensuring that the motor achieves its rated speed quickly and operates efficiently thereafter. This dual-functionality eliminates the need for separate start and run capacitors in many applications, simplifying installation and reducing component count. Professionals rely on Littelfuse for components that deliver consistent electrical characteristics and robust mechanical integrity, ensuring that their critical industrial systems operate without interruption. The CAP-40/3/440R exemplifies this commitment to quality, offering a dependable solution for motor control and power factor correction in demanding industrial settings.
  • High-performance dual-run capacitor with 40µF start and 3µF run capacitance.
  • Dual voltage rating of 370/440V AC for broad industrial compatibility.
  • Engineered by Littelfuse for reliable operation in demanding industrial environments.
  • Ideal for HVAC systems, compressors, pumps, and other single-phase motor applications.
  • Durable round configuration designed for easy integration and long service life.

Specifications

Series
CAP
Size
Round
Voltage Rating
370/440V AC
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.