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Allen-Bradley 809-A03E Instantaneous Trip Current Relay for Industrial Protection

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Allen-Bradley 809-A03E

by Allen-Bradley

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OverviewThe Allen-Bradley 809-A03E is an advanced instantaneous trip current relay, expertly designed to deliver swift and dependable overcurrent defense within demanding industrial electrical environments. This vital component efficiently operates across a broad voltage spectrum, up to 600V AC/DC, safeguarding essential machinery and infrastructure from potential harm caused by excessive current. Its exceptional adjustability and sturdy construction make it an indispensable asset for sustaining optimal operational safety and efficiency in diverse industrial settings. Focused on exactness and longevity, the 809-A03E ensures your electrical systems are shielded from sudden current fluctuations, thereby minimizing downtime and maximizing the operational life of your valuable assets.Crafted for adaptability, the Allen-Bradley 809-A03E offers an adjustable tripping current range of 2.1-6.1A (AC) and 1.9-5.7A (DC), enabling precise configuration to meet the specific protective needs of your applications. This refined control over trip parameters guarantees that your equipment receives prompt and accurate protection against a wide array of current irregularities. Furthermore, with a continuous coil current rating of 4A and extensive frequency compatibility from 25Hz to 60Hz, this relay is ideally suited for a varied range of industrial uses, including motor protection, comprehensive electrical distribution networks, and sophisticated automation setups. Its robust build and intelligent engineering empower professionals to implement highly effective current protection strategies, securing investments and ensuring continuous, uninterrupted operations.Key Features Instantaneous Overcurrent Protection: Delivers immediate response to current spikes, preserving equipment from damage. 600V AC/DC Max Voltage: Compatible with a wide variety of industrial power systems, ensuring broad applicability. Adjustable Tripping Current: Offers a precise range of 2.1-6.1A (AC) and 1.9-5.7A (DC) for customized protection. 4A Continuous Coil Current: Guarantees stable and dependable performance under sustained conditions. Broad Frequency Compatibility: Supports 25Hz, 50Hz, and 60Hz, aligning with global industrial specifications. Industrial-Grade Construction: Built for harsh environments, ensuring durable performance and reliability. Flexible Mounting: Accommodates both panel and DIN rail mounting for versatile installation. Technical Specifications Model: 809-A03E Relay Type: Instantaneous Trip Current Relay Voltage Rating: 600V AC/DC Tripping Current Adjustment: AC: 2.1-6.1A / DC: 1.9-5.7A Maximum Continuous Coil Current: 4A Frequency Compatibility: 25Hz, 50Hz, 60Hz Mounting: Panel / DIN Rail Mount Certifications: UL, CE, RoHS Applications Motor Overcurrent Safeguard: Prevents excessive current from harming industrial motors, extending their operational life. Electrical Distribution Systems: Enhances safety and reliability across complex power networks by mitigating overcurrent risks. Industrial Control Panels: Ensures critical circuit protection in automated industrial systems, preventing failures. SCADA & Process Integration: Provides real-time overcurrent response, crucial for continuous process integrity and data acquisition. Heavy Machinery Protection: Reduces the potential for electrical faults in demanding applications, minimizing costly repairs and downtime. Renewable Energy Installations: Offers robust protection for inverters and converters in solar and wind power systems. Why Choose the Allen-Bradley 809-A03E?The Allen-Bradley 809-A03E stands out as a leading solution for industrial overcurrent protection, providing a strategic combination of rapid response, accuracy, and endurance. Its immediate trip functionality ensures that any unusual current surge is detected and addressed instantly, delivering an unmatched level of protection that safeguards your operations.Order NowEnhance the safety and reliability of your industrial electrical systems by ordering the Allen-Bradley 809-A03E from Palm Parts Solution today.FAQWhat is the primary function of the Allen-Bradley 809-A03E?The Allen-Bradley 809-A03E primarily serves as an instantaneous trip current relay, offering rapid overcurrent protection for industrial electrical systems to prevent equipment damage.What voltage range is compatible with this relay?This relay is compatible with a wide voltage range, capable of operating up to 600V AC/DC, making it suitable for various industrial applications.Can I adjust the tripping current on the 809-A03E?Yes, the 809-A03E features an adjustable tripping current range of 2.1-6.1A for AC and 1.9-5.7A for DC, allowing for precise customization to meet specific protection requirements.What types of mounting options are available for the 809-A03E?The 809-A03E offers versatile mounting options, supporting both panel and DIN rail installations for flexible setup in industrial environments.

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PRODUCT DETAILS

Allen-Bradley 809-A03E

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: 809-A03E
  • Relay Type: Instantaneous Trip Current Relay
  • Voltage Rating: 600V AC/DC
  • Tripping Current Adjustment: AC: 2.1-6.1A / DC: 1.9-5.7A
  • Maximum Continuous Coil Current: 4A
  • Frequency Compatibility: 25Hz, 50Hz, 60Hz
  • Mounting: Panel / DIN Rail Mount
  • Certifications: UL, CE, RoHS

Applications

  • Motor Overcurrent Safeguard: Prevents excessive current from harming industrial motors, extending their operational life.
  • Electrical Distribution Systems: Enhances safety and reliability across complex power networks by mitigating overcurrent risks.
  • Industrial Control Panels: Ensures critical circuit protection in automated industrial systems, preventing failures.
  • SCADA & Process Integration: Provides real-time overcurrent response, crucial for continuous process integrity and data acquisition.
  • Heavy Machinery Protection: Reduces the potential for electrical faults in demanding applications, minimizing costly repairs and downtime.
  • Renewable Energy Installations: Offers robust protection for inverters and converters in solar and wind power systems.

Why Choose the 809-A03E?

The Allen-Bradley 809-A03E stands out as a leading solution for industrial overcurrent protection, providing a strategic combination of rapid response, accuracy, and endurance. Its immediate trip functionality ensures that any unusual current surge is detected and addressed instantly, delivering an unmatched level of protection that safeguards your operations.

Availability & Shipping

  • In stock: 809-A03E 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 809-A03E ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The Allen-Bradley 809-A03E primarily serves as an instantaneous trip current relay, offering rapid overcurrent protection for industrial electrical systems to prevent equipment damage.

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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