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Allen Bradley 1321-3R4-B
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 1321-3R4-B is a rugged 3-phase line reactor specifically engineered to boost the efficiency and lifespan of your alternating current drive systems. This vital component acts as a safeguard against typical electrical disruptions, effectively reducing harmonic distortion, curbing damaging inrush currents, and providing critical defense for delicate motor drives. Incorporating this premium line reactor enables superior power quality, improved system efficiency, and prolonged equipment durability within your industrial automation and power regulation setups. Its accessible open-style construction guarantees straightforward integration into existing configurations, making it a dependable option for upholding consistent and clean power delivery.Key Features Efficient 3-Phase Open Style Design Facilitates simple integration and installation across diverse industrial settings, ensuring optimal air circulation and accessibility. Optimized Current Handling Precisely rated for 4 Amperes, guaranteeing steady and dependable operation for a broad spectrum of AC drive uses. Significant 6.5 millihenry Inductance Delivers effective voltage smoothing and filtering, essential for maintaining uninterrupted power quality. Superior Harmonic Reduction Actively minimizes electrical interference and harmonic deformation, thereby enhancing motor drive performance and efficiency. Robust Equipment Protection Shields valuable motor drives and other sensitive machinery from harmful power fluctuations and voltage spikes. Extended System Lifespan Contributes significantly to the longevity of AC drive components by lessening electrical strain and wear. Improved Power Quality Ensures a cleaner and more stable power supply, leading to greater operational dependability and decreased downtime. Technical Specifications Model: 1321-3R4-B Type: AC Drive Line Reactor Phase: 3-Phase Current Rating: 4A Inductance: 6.5mH Style: Open Brand: Allen-Bradley Applications Industrial Motor Drives Crucial for preventing premature deterioration in variable frequency drives (VFDs) and other motor control mechanisms. Automation Systems Enhances the stability and reliability of automated production lines and robotic applications. Power Conditioning Units Integrates flawlessly into power conditioning setups to maintain a clean and steady power supply. HVAC and Pumping Systems Boosts the efficiency and operational smoothness of heating, ventilation, air conditioning, and fluid transport systems. Material Handling Equipment Ensures reliable performance of conveyors, cranes, and other essential material handling machinery. General AC Drive Applications A versatile solution for any configuration requiring a high-performance 3-phase line reactor to mitigate electrical disturbances. Why Choose This Model? Unmatched Allen-Bradley Quality Benefit from the renowned dependability and engineering excellence of Allen-Bradley, a leader in industrial automation. Enhanced System Durability Proactive safeguarding against power anomalies considerably extends the operational life of your costly motor drives and connected equipment. Optimized Performance Experience smoother motor operation, reduced energy losses, and increased overall system efficiency through superior harmonic mitigation. Cost-Effective Solution By preventing expensive repairs and downtime, the 1321-3R4-B offers excellent long-term value and return on investment. Seamless Integration The open-style construction and precise specifications guarantee effortless incorporation into new or existing AC drive configurations. Improved Compliance Helps your systems adhere to power quality standards and regulations, contributing to a more stable and compliant electrical infrastructure. Order NowInvest in the performance and protection of your AC drive systems with the Allen-Bradley 1321-3R4-B 3-Phase Line Reactor. Add to cart today to experience superior power quality and extended equipment lifespan.FAQWhat is the primary function of a 3-phase line reactor?A 3-phase line reactor primarily functions to mitigate harmonic distortion, limit inrush currents, and protect AC drive systems from electrical disturbances, thereby improving power quality and extending equipment life.How does the open-style design benefit industrial applications?The open-style design facilitates easier integration and installation within industrial environments, allows for optimal airflow, and improves accessibility for maintenance and inspections.What types of equipment can benefit from the 1321-3R4-B?Equipment such as industrial motor drives, automation systems, power conditioning units, HVAC and pumping systems, and material handling equipment can all benefit from the enhanced protection and power quality provided by this line reactor.
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Allen Bradley 1321-3R4-B
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:
- Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- 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-B
- Type: AC Drive Line Reactor
- Phase: 3-Phase
- Current Rating: 4A
- Inductance: 6.5mH
- Style: Open
- Brand: Allen-Bradley
Applications
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Industrial Motor Drives
Crucial for preventing premature deterioration in variable frequency drives (VFDs) and other motor control mechanisms.
-
Automation Systems
Enhances the stability and reliability of automated production lines and robotic applications.
-
Power Conditioning Units
Integrates flawlessly into power conditioning setups to maintain a clean and steady power supply.
-
HVAC and Pumping Systems
Boosts the efficiency and operational smoothness of heating, ventilation, air conditioning, and fluid transport systems.
-
Material Handling Equipment
Ensures reliable performance of conveyors, cranes, and other essential material handling machinery.
-
General AC Drive Applications
A versatile solution for any configuration requiring a high-performance 3-phase line reactor to mitigate electrical disturbances.
Why Choose the 1321-3R4-B?
-
Unmatched Allen-Bradley Quality
Benefit from the renowned dependability and engineering excellence of Allen-Bradley, a leader in industrial automation.
-
Enhanced System Durability
Proactive safeguarding against power anomalies considerably extends the operational life of your costly motor drives and connected equipment.
-
Optimized Performance
Experience smoother motor operation, reduced energy losses, and increased overall system efficiency through superior harmonic mitigation.
-
Cost-Effective Solution
By preventing expensive repairs and downtime, the 1321-3R4-B offers excellent long-term value and return on investment.
-
Seamless Integration
The open-style construction and precise specifications guarantee effortless incorporation into new or existing AC drive configurations.
-
Improved Compliance
Helps your systems adhere to power quality standards and regulations, contributing to a more stable and compliant electrical infrastructure.
Availability & Shipping
- ▸In stock: 1321-3R4-B 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-B ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Allen-Bradley
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.
Related Allen-Bradley resources
What Verified Buyers Say
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Independent Supplier Notice
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.