Allen Bradley 21G14WD740AN0NNNNN-ND-P22 Miniature Circuit Breaker

Dec. 11 , 2025

1. Product Name

2. Product Overview

The Allen Bradley 21G14WD740AN0NNNNN-ND-P22 is a high-performance Allen Bradley Miniature Circuit Breaker designed for precise overload and short-circuit protection in low-voltage electrical systems. It is tailored to meet the rigorous demands of industrial and agricultural automation, ensuring the safety and stability of critical electrical circuits.

3. Product Description

As a premium member of the Allen Bradley Miniature Circuit Breaker series, the 21G14WD740AN0NNNNN-ND-P22 integrates advanced electrical protection technology and robust structural design to deliver exceptional performance in harsh working environments. This miniature circuit breaker is equipped with a high-precision thermal-magnetic trip mechanism, a core component that achieves dual-layer protection for electrical systems: the thermal element responds sensitively to persistent overloads, generating heat to trigger a trip action and cut off the circuit, while the magnetic element enables instant tripping during short-circuit faults, effectively minimizing equipment damage and fire hazards caused by electrical failures.

Constructed with high-grade flame-retardant thermoplastic housing, the Allen Bradley 21G14WD740AN0NNNNN-ND-P22 exhibits excellent resistance to impact, high temperatures, and chemical contaminants commonly found in industrial workshops and agricultural fields. It is rated for a maximum voltage of 480Y/277V AC and a current rating of 40A, making it compatible with a wide range of low-voltage electrical applications. The compact and lightweight design of this Allen Bradley Miniature Circuit Breaker allows for easy installation in space-constrained electrical enclosures, such as control panels of automation equipment, agricultural machinery, and electrical distribution boxes.

Equipped with a clear visual trip indicator, the 21G14WD740AN0NNNNN-ND-P22 enables operators to quickly identify fault points and conduct maintenance, greatly reducing downtime. It adopts a standard clip-on mounting design, which can be firmly installed on DIN rails, simplifying the assembly and upgrade process of electrical systems. Compliant with global safety standards such as UL 489 and IEC 60898, this genuine Allen Bradley Miniature Circuit Breaker ensures consistent and reliable performance in international markets, making it a trusted choice for global industrial and agricultural automation projects.

4. Product Model

21G14WD740AN0NNNNN-ND-P22

21G14WD740AN2NNNNN-HD-P20

21G14WD740AN2NNNNN-LD-P24

21G14WD740AN2NNNNN-ND-P20

21G14WD740AN2NNNNN-ND-P22

21G14WD740AN4NNNNN-HD-P22

21G14WD740AN4NNNNN-HD-P22-P30

21G14WD740AN4NNNNN-HD-P24

21G14WD740AN4NNNNN-HD-P24-P30

21G14WD740AN4NNNNN-LD-P24-P30

21G14WD740AN4NNNNN-ND-P22

21G14WD740AN4NNNNN-ND-P22-P30

21G14WD740AN4NNNNN-ND-P24

21G14WD740AN4NNNNN-ND-P24-P30

21G14WD740JN0NNNNN-ND-P22

21G14WD740JN0NNNNN-ND-P22-P30

21G14WD740JN2NNNNN-HD-P20

21G14WD800AN0NNNNN-ND-P24-P30

21G14WD800JN0NNNNN-LD-P22

21G14WD800JN2NNNNN-HD-P20

21G14WD960AN0NNNNN-HD-P22

21G14WD960AN0NNNNN-ND-P24-P30

21G14WD960AN2NNNNN-HD-P22

21G14WD960AN4NNNNN-ND-P22-P30

21G14WD960JN2NNNNN-HD-P20

21G14WD960JN2NNNNN-HD-P24-P30

21G14WE1K1AN2NNNNN-ND-P24

21G14WE1K1AN4NNNNN-ND-P24-P30

21G14WE1K1JN2NNNNN-ND-P24

21G14WE1K4AN0NNNNN-ND-P24-P30

21G14WE1K4AN2NNNNN-LD-P24

21G14WE1K4AN2NNNNN-ND-P22

21G14WE1K4AN2NNNNN-ND-P24-P30

21G14WE1K4AN4NNNNN-ND-P24-P30

21G14WE295AN0NNNNN-ND-P20

21G14WE295AN4NNNNN-ND-P20

21G14WE395AN0NNNNN-HD-P20

21G14WE510AN0NNNNN-ND-P24-P30

21G14WE510AN2NNNNN-ND-P22

21G14WE510AN2NNNNN-ND-P24

21G14WE510AN4NNNNN-ND-P24

21G14WE510AN4NNNNN-ND-P24-P30

21G14WE595AN4NNNNN-ND-P20

21G14WE595AN4NNNNN-ND-P24-P30

21G14WE630AN2NNNNN-ND-P24

21G14WE760AN2NNNNN-HD-P20

21G14WE760AN2NNNNN-HD-P22

21G14WE760AN2NNNNN-HD-P24

5. Product Advantages

The Allen Bradley 21G14WD740AN0NNNNN-ND-P22 Miniature Circuit Breaker boasts prominent advantages in quality, performance, and usability, distinguishing itself from similar products. Firstly, it benefits from Allen Bradley's rigorous quality control system, with genuine craftsmanship ensuring superior durability and stability. The brand's decades-long experience in manufacturing high-performance electrical components lays a solid foundation for the reliable operation of this circuit breaker, even in harsh industrial and agricultural environments.

Secondly, its advanced thermal-magnetic trip mechanism delivers precise and efficient protection. The dual-layer protection design effectively mitigates risks from both overloads and short circuits, safeguarding critical electrical equipment and reducing economic losses caused by faults. Additionally, the high-grade flame-retardant thermoplastic housing enhances safety by resisting high temperatures and preventing flame spread, further improving the overall safety of the electrical system.

Thirdly, the product features easy installation and maintenance. The clip-on mounting design reduces installation time and labor costs, while the clear visual trip indicator simplifies fault diagnosis and maintenance work. Compliance with global safety standards enables it to be widely applied in international projects, ensuring strong versatility. Overall, this Allen Bradley Miniature Circuit Breaker achieves an excellent balance between protection performance, durability, and usability, providing cost-effective electrical protection solutions for industrial and agricultural automation.

6. Business Insight on www.wheat-auto.com

Based on the domain name "wheat-auto.com" and the context of promoting industrial automation products, www.wheat-auto.com is inferred to focus on providing automation solutions and supporting components tailored for the wheat industry. Its core business is likely the supply of industrial automation equipment, electrical protection components (such as the Allen Bradley 21G14WD740AN0NNNNN-ND-P22 Miniature Circuit Breaker), control systems, and related accessories that meet the specific needs of wheat production, processing, and storage.

The website is expected to leverage industry-specific expertise to address pain points in wheat automation, such as harsh working environments (dust, temperature fluctuations) and high reliability requirements for electrical systems. In addition to product sales, it may provide value-added services including personalized system design, technical consultation, on-site installation guidance, and after-sales maintenance. By integrating renowned brands like Allen Bradley, www.wheat-auto.com enhances the credibility and competitiveness of its product offerings, positioning itself as a trusted partner for enterprises in the wheat industry seeking professional automation solutions. This niche market positioning allows the website to differentiate itself from general automation suppliers and build long-term relationships with customers in the agricultural sector.

7. Application Scenarios

The Allen Bradley 21G14PF960JN0NNNNN-ND-P22 Miniature Circuit Breaker is widely applicable in low-voltage electrical systems requiring reliable protection, with a particular focus on automation scenarios in the wheat industry and related industrial fields. In wheat processing plants, it can be installed in the electrical control panels of equipment such as wheat milling machines, flour sorting equipment, conveyor systems, and dust removal equipment. Here, the breaker protects electrical circuits from overloads caused by long-term operation of the equipment and short circuits caused by dust accumulation, ensuring the continuous and stable operation of the processing line.

In wheat storage facilities such as large silos and grain depots, this Allen Bradley Miniature Circuit Breaker is suitable for the electrical systems of temperature and humidity monitoring equipment, ventilation and dehumidification systems, and grain level detection devices. Its excellent dust resistance and high-temperature resistance enable stable operation in harsh storage environments, preventing electrical faults from causing grain mildew, spoilage, or fire accidents. Additionally, it can be applied to agricultural automation systems in wheat fields, such as the electrical control circuits of automated irrigation systems, seeding machines, and fertilizing equipment, safeguarding the normal operation of these devices in outdoor environments with variable weather conditions such as rain, dust, and temperature fluctuations.

Beyond the wheat industry, this circuit breaker can also be used in general industrial settings, such as manufacturing workshops, warehouse distribution centers, and agricultural product processing plants. It protects the electrical circuits of HVAC systems, lighting, and auxiliary equipment, ensuring workplace safety and operational stability. Its reliable protection performance and robust design make it an ideal electrical protection solution for any low-voltage system requiring high durability and precise fault response

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