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Allen-Bradley 140U-D6D3-C20
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 140U-D6D3-C20 is a high-performance, current-limiting molded case circuit breaker (MCCB) crafted to provide exceptional protection for industrial and commercial power distribution networks. Engineered for demanding operational settings, this 3-pole, D-frame MCCB ensures reliable short-circuit and overload defense for essential electrical installations. Featuring a sturdy 20A rated current and an impressive 60-69kA interrupting capability, the 140U-D6D3-C20 guarantees heightened safety and continuous operation. Its fixed thermal and fixed magnetic trip unit delivers consistent and precise safeguarding, making it a vital component in high-power uses where dependability is paramount. Trust Allen-Bradley's heritage of quality and innovation to secure your electrical systems.Key Features 20A Current Rating: Designed for industrial circuit protection, preventing damage from overcurrents. 3-Pole Design: Delivers comprehensive protection for three-phase electrical configurations. D-Frame Construction: A compact yet powerful frame size, excellent for high-performance and space-conscious installations. 60-69kA Interrupting Capacity: Provides superior fault interruption capabilities for enhanced safety and equipment defense. Fixed Thermal and Magnetic Trip Unit: Ensures consistent, reliable, and maintenance-free overcurrent protection. Current-Limiting Technology: Reduces fault energy during short circuits, minimizing potential harm to downstream equipment. Robust Industrial Build: Manufactured by Allen-Bradley for durability and extended performance in challenging industrial settings. Technical Specifications Model: 140U-D6D3-C20 Breaker Type: Molded Case Circuit Breaker (MCCB) Frame Size: D-Frame Number of Poles: 3 Rated Current: 20A Interrupting Capacity: 60-69kA Trip Unit: Fixed Thermal / Fixed Magnetic Application: Industrial and Commercial Circuit Protection Brand: Allen-Bradley Applications Securing main and branch circuits within electrical distribution panels. Protecting industrial machinery, including motors, control panels, and automation equipment. Ensuring the integrity of electrical systems in commercial buildings and facilities. Overload and short-circuit protection for sensitive electronic equipment and controls. Integration into switchgear and control centers for comprehensive system protection. Use in diverse environments from manufacturing plants to data centers requiring robust power management. Why Choose This Model? Exceptional Reliability: Allen-Bradley's reputation for quality ensures a dependable solution for vital electrical protection. Increased Safety: The 60-69kA interrupting capacity significantly reduces risks during fault conditions, protecting personnel and assets. Optimized Performance: Fixed thermal and magnetic trips provide precise and consistent protection, minimizing downtime and maximizing operational efficiency. Space-Saving Design: The D-frame offers high current-carrying capabilities within a compact footprint, ideal for densely packed electrical enclosures. Long-Term Durability: Engineered for industrial environments, this MCCB withstands harsh conditions, ensuring extended service life. Seamless Integration: As part of the Allen-Bradley family, it integrates effortlessly into existing Rockwell Automation systems and designs. Cost-Effective Protection: A premium, robust solution that provides excellent value by preventing costly equipment damage and operational interruptions. Order NowElevate your electrical protection standards with the Allen-Bradley 140U-D6D3-C20 MCCB. Invest in superior safety, reliability, and performance for your industrial and commercial applications. Add to cart today!FAQWhat is the purpose of the Allen-Bradley 140U-D6D3-C20 MCCB?This MCCB is designed to provide high-performance overload and short-circuit protection for industrial and commercial power distribution systems, ensuring safety and operational continuity.What is the rated current of this MCCB?The Allen-Bradley 140U-D6D3-C20 has a robust 20A rated current, optimized for industrial circuit protection.What is the interrupting capacity of the 140U-D6D3-C20?It boasts an impressive 60-69kA interrupting capacity, delivering superior fault interruption capabilities.Does this MCCB have adjustable trip settings?No, it features a fixed thermal and fixed magnetic trip unit, ensuring consistent and precise protection without the need for adjustments.In which environments can this MCCB be used?It is built for robust industrial construction, making it suitable for challenging industrial environments, manufacturing plants, data centers, and commercial buildings.
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Allen-Bradley 140U-D6D3-C20
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: 140U-D6D3-C20
- Breaker Type: Molded Case Circuit Breaker (MCCB)
- Frame Size: D-Frame
- Number of Poles: 3
- Rated Current: 20A
- Interrupting Capacity: 60-69kA
- Trip Unit: Fixed Thermal / Fixed Magnetic
- Application: Industrial and Commercial Circuit Protection
- Brand: Allen-Bradley
Applications
- Securing main and branch circuits within electrical distribution panels.
- Protecting industrial machinery, including motors, control panels, and automation equipment.
- Ensuring the integrity of electrical systems in commercial buildings and facilities.
- Overload and short-circuit protection for sensitive electronic equipment and controls.
- Integration into switchgear and control centers for comprehensive system protection.
- Use in diverse environments from manufacturing plants to data centers requiring robust power management.
Why Choose the 140U-D6D3-C20?
- Exceptional Reliability: Allen-Bradley's reputation for quality ensures a dependable solution for vital electrical protection.
- Increased Safety: The 60-69kA interrupting capacity significantly reduces risks during fault conditions, protecting personnel and assets.
- Optimized Performance: Fixed thermal and magnetic trips provide precise and consistent protection, minimizing downtime and maximizing operational efficiency.
- Space-Saving Design: The D-frame offers high current-carrying capabilities within a compact footprint, ideal for densely packed electrical enclosures.
- Long-Term Durability: Engineered for industrial environments, this MCCB withstands harsh conditions, ensuring extended service life.
- Seamless Integration: As part of the Allen-Bradley family, it integrates effortlessly into existing Rockwell Automation systems and designs.
- Cost-Effective Protection: A premium, robust solution that provides excellent value by preventing costly equipment damage and operational interruptions.
Availability & Shipping
- ▸In stock: 140U-D6D3-C20 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 140U-D6D3-C20 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.
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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.