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Allen-Bradley 1321-3R4-C Line Reactor

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Allen-Bradley 1321-3R4-C

by Allen-Bradley

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OverviewThe Allen-Bradley 1321-3R4-C is a robust line reactor designed to protect AC drive setups and optimize power quality in industrial environments. This open-configuration reactor, part of the respected Allen-Bradley 1321 series, effectively reduces harmonic distortions and suppresses transient voltage spikes. With a precise 4A current rating and a 9.0 mH inductance, it actively prolongs the operational life of connected machinery by minimizing electrical noise and ensuring a cleaner power supply. Engineered for straightforward integration into various control panels, the 1321-3R4-C is an essential part for any system requiring stable and efficient AC motor control and superior power conditioning.Key Features Accurate 4A Current Rating Perfectly suited for a wide array of low to medium-power AC drive applications, ensuring ideal compatibility and peak performance. Optimized 9.0 mH Inductance Provides excellent harmonic filtering and crucial transient voltage suppression, safeguarding delicate electronic components. Durable Open Style Construction Allows for simple and adaptable integration into existing control panel layouts, facilitating efficient installation and maintenance. Advanced AC Drive Defense Actively diminishes line-side voltage transients and detrimental harmonics, protecting your valuable variable frequency drives (VFDs) from premature wear and failure. Extended Equipment Durability By reducing electrical interference and noise, this reactor significantly increases the service life and dependability of industrial motors and control systems. Improved System Efficiency Contributes to a more stable electrical system, cutting down on wasted energy and boosting overall operational efficiency by minimizing power fluctuations. Technical Specifications Model: 1321-3R4-C Reactor Type: Line Reactor (AC Drive Reactor) Current Rating: 4A Inductance: 9.0 mH Enclosure Style: Open Style Application: AC Drive Protection, Harmonic Filtering, Power Quality Improvement Applications Variable Frequency Drives (VFDs) Essential for shielding VFDs from harmful power surges, guaranteeing consistent and dependable motor speed control. Industrial Motor Control Systems Boosts the performance, efficiency, and longevity of industrial motors by providing a stable power source. Power Quality Enhancement Vital for decreasing harmonic distortion within AC electrical systems, adhering to industry guidelines and preventing equipment damage. Factory and Industrial Automation Supports the smooth, continuous, and reliable operation of vital electrical systems and automated machinery. HVAC Systems Enhances the efficiency and lifespan of motors within heating, ventilation, and air conditioning units by mitigating electrical transients. Pumping Stations and Water Treatment Ensures dependable operation of pump motors and related control equipment in challenging environments. Why Choose the Allen-Bradley 1321-3R4-C? Unmatched Reliability Benefit from the renowned quality and engineering excellence of Allen-Bradley, ensuring long-lasting, trustworthy performance. Superior Protection Offers advanced defense against voltage transients and harmonic distortions, crucial for preserving the integrity of your industrial equipment. Optimized Performance Facilitates stable operation of AC drives and motors, leading to enhanced overall system efficiency and productivity. Cost-Effective Investment Extend the lifespan of expensive machinery, reducing maintenance expenses and preventing costly downtime. Seamless Integration The open-style design allows for effortless incorporation into existing control panels, simplifying installation and upgrades. Industry-Trusted Brand Rely on Allen-Bradley's global reputation for innovative and premium industrial automation solutions. Order NowInvest in the superior protection and performance of the Allen-Bradley 1321-3R4-C Line Reactor today. Experience improved power quality, enhanced equipment longevity, and more stable industrial operations.FAQWhat is the primary function of the Allen-Bradley 1321-3R4-C Line Reactor?Its primary function is to protect AC drive systems and improve power quality by mitigating harmonic distortions and suppressing transient voltage spikes, thereby extending equipment lifespan.What is the current rating of this line reactor?The Allen-Bradley 1321-3R4-C has a precise 4A current rating, making it suitable for a range of low to medium-power AC drive applications.What is the inductance value of the 1321-3R4-C?This line reactor features an optimized inductance of 9.0 mH for effective harmonic filtering and transient voltage suppression.How does the open-style design benefit integration?The open-style design facilitates straightforward and flexible integration into existing control panel layouts, simplifying both installation and maintenance processes.What types of equipment can this reactor protect?It protects various equipment, including Variable Frequency Drives (VFDs), industrial motors, and entire control systems, by reducing electrical disturbances and noise.

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PRODUCT DETAILS

Allen-Bradley 1321-3R4-C

Overview

This is a genuine Allen-Bradley component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1321-3R4-C
  • Reactor Type: Line Reactor (AC Drive Reactor)
  • Current Rating: 4A
  • Inductance: 9.0 mH
  • Enclosure Style: Open Style
  • Application: AC Drive Protection, Harmonic Filtering, Power Quality Improvement

Applications

  • Variable Frequency Drives (VFDs)

    Essential for shielding VFDs from harmful power surges, guaranteeing consistent and dependable motor speed control.

  • Industrial Motor Control Systems

    Boosts the performance, efficiency, and longevity of industrial motors by providing a stable power source.

  • Power Quality Enhancement

    Vital for decreasing harmonic distortion within AC electrical systems, adhering to industry guidelines and preventing equipment damage.

  • Factory and Industrial Automation

    Supports the smooth, continuous, and reliable operation of vital electrical systems and automated machinery.

  • HVAC Systems

    Enhances the efficiency and lifespan of motors within heating, ventilation, and air conditioning units by mitigating electrical transients.

  • Pumping Stations and Water Treatment

    Ensures dependable operation of pump motors and related control equipment in challenging environments.

Why Choose the 1321-3R4-C?

  • Unmatched Reliability

    Benefit from the renowned quality and engineering excellence of Allen-Bradley, ensuring long-lasting, trustworthy performance.

  • Superior Protection

    Offers advanced defense against voltage transients and harmonic distortions, crucial for preserving the integrity of your industrial equipment.

  • Optimized Performance

    Facilitates stable operation of AC drives and motors, leading to enhanced overall system efficiency and productivity.

  • Cost-Effective Investment

    Extend the lifespan of expensive machinery, reducing maintenance expenses and preventing costly downtime.

  • Seamless Integration

    The open-style design allows for effortless incorporation into existing control panels, simplifying installation and upgrades.

  • Industry-Trusted Brand

    Rely on Allen-Bradley's global reputation for innovative and premium industrial automation solutions.

Availability & Shipping

  • In stock: 1321-3R4-C ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1321-3R4-C ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

Its primary function is to protect AC drive systems and improve power quality by mitigating harmonic distortions and suppressing transient voltage spikes, thereby extending equipment lifespan.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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