Littelfuse CAP-45/3/440R - 45+3MFD 370/440V ROUND RUN CAPACITOR
Littelfuse

CAP-45/3/440R

UPC: 811068032953


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Specification Sheet

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Minimum Qty: 10

Multiplier: 10

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Overview

The Littelfuse CAP-45/3/440R is a premium, dual-section round run capacitor engineered for demanding industrial motor applications. This capacitor plays a critical role in optimizing the performance and longevity of single-phase AC motors, commonly found in essential industrial equipment. With a robust voltage rating of 370/440V and a combined capacitance of 45µF and 3µF, the CAP-45/3/440R is designed to provide reliable starting and running torque for a wide array of motor-driven systems. **Key Features and Benefits:** * **Dual Capacitance Design:** The integrated 45µF and 3µF sections allow for efficient starting and continuous running of motors, ensuring optimal power factor correction and reduced energy consumption. This dual functionality simplifies installation by replacing two separate capacitors with a single, integrated unit. * **High Voltage Rating:** The 370/440V rating ensures compatibility with a broad spectrum of industrial power supplies, offering flexibility and broad application potential. * **Durable Construction:** Built by Littelfuse, a recognized leader in circuit protection and power components, this capacitor is constructed with high-quality materials to withstand the rigors of industrial environments. Its robust design ensures consistent performance even under fluctuating load conditions and extreme temperatures. * **Enhanced Motor Efficiency:** By improving the motor's power factor, the CAP-45/3/440R helps to reduce reactive power draw, leading to lower energy bills and a more efficient overall electrical system. This also contributes to reduced heat generation within the motor, extending its operational life. * **Reliable Operation:** Littelfuse capacitors are manufactured to stringent quality standards, guaranteeing dependable operation and minimizing the risk of premature failure. This reliability is paramount in industrial settings where downtime can be extremely costly. **Applications:** The Littelfuse CAP-45/3/440R is an ideal choice for a variety of industrial applications, including but not limited to: * **HVAC Systems:** Essential for the reliable operation of air conditioning units, fans, and blowers in commercial and industrial buildings. * **Pumps:** Powers centrifugal and other types of pumps used in water management, industrial processes, and fluid transfer. * **Compressors:** Ensures consistent starting and running of air compressors used in manufacturing, workshops, and pneumatic systems. * **Industrial Machinery:** Supports the operation of various motor-driven equipment such as conveyors, mixers, and machine tools. When selecting a run capacitor for industrial motors, professionals prioritize reliability, appropriate capacitance values, and robust construction. The Littelfuse CAP-45/3/440R meets these critical requirements, offering a dependable solution for maintaining and enhancing motor performance. Its dual-section design simplifies inventory and installation, making it a practical choice for maintenance and new equipment builds. Trust in Littelfuse's commitment to quality and innovation for your critical motor control needs.
  • Dual section 45µF + 3µF capacitance for starting and running motors
  • High voltage rating of 370/440V for broad industrial compatibility
  • Round metalized polypropylene film construction for durability
  • Designed for improved motor power factor correction and efficiency
  • Ideal for HVAC, pumps, compressors, and industrial machinery

Specifications

Mounting Type
Compact Round
Series
CAP
Size
Round
Voltage Rating
370/440 V
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.