Allen Bradley 20GEF4C1K0MNDNNNNN 1000A Miniature Circuit Breaker for Industrial Protection

Nov. 17 , 2025

1. Product Name

Allen Bradley 20GEF4C1K0MNDNNNNN 1000A Miniature Circuit Breaker (MCB)

2. Product Introduction

The Allen Bradley 20GEF4C1K0MNDNNNNN is a heavy-duty Miniature Circuit Breaker, engineered to deliver 1000A high-current protection against overloads and short circuits in large-scale industrial electrical systems.

3. Product Description

The Allen Bradley 20GEF4C1K0MNDNNNNN is a premium high-current Miniature Circuit Breaker from Allen Bradley’s 20GE series, designed to safeguard large industrial electrical infrastructure with robust performance and precise protection. As a cornerstone of high-power industrial safety, this Allen Bradley Miniature Circuit Breaker integrates advanced thermal-magnetic tripping technology with industrial-grade construction, ensuring reliability in demanding high-current environments.

Crafted with impact-resistant glass-fiber-reinforced polyester housing and silver-plated copper alloy contacts, the Allen Bradley Miniature Circuit Breaker exhibits exceptional heat resistance and arc quenching capabilities. Its dual tripping mechanism provides comprehensive protection: the thermal element responds to prolonged overloads (e.g., multiple motor startups) with gradual tripping, while the magnetic element instantly interrupts short circuits with a breaking capacity of up to 25kA—effectively preventing equipment damage, electrical fires, and costly downtime.

Rated for 1000A current and 600V AC 3-phase operation, this Allen Bradley Miniature Circuit Breaker is optimized for protecting high-power industrial equipment, including large motors, main power distribution lines, industrial HVAC systems, and heavy-duty automation machinery. It complies with global safety standards such as UL 489, IEC 60898, and CE, ensuring seamless integration into international electrical systems. The compact design (9.2×11.5×22.3cm) enables space-efficient installation in large distribution boards and control cabinets, while the ergonomic toggle switch features clear ON/OFF/tripped status indicators for intuitive operation.

A key advantage of this Allen Bradley Miniature Circuit Breaker is its compatibility with Allen Bradley’s broader automation ecosystem, including PowerFlex VFDs, ControlLogix PLCs, and safety relays, forming a unified high-power protection network. It features heavy-duty bolted terminal connections for secure high-current contact and tool-less DIN-rail mounting, simplifying installation and maintenance. The breaker operates reliably in temperatures ranging from -25°C to 70°C and holds an IP20 rating, shielding internal components from dust and debris in industrial settings.

Equipped with a lockable toggle switch and auxiliary contact compatibility, the Allen Bradley Miniature Circuit Breaker enhances operational safety by preventing unauthorized resets and enabling remote monitoring of circuit status. It supports selective coordination with other protective devices, ensuring only the faulty circuit is isolated to minimize operational disruption. The “F4C” configuration denotes its high-performance 脱扣 curve and accessory compatibility, making it suitable for applications requiring robust protection for high-inrush current loads and continuous high-power operations.

4. Product Model

20GEF4C1K0MNDNNNNN
20GEF4C1K0MNDNNNNN-C0-P50
20GEF4C1K0MNDNNNNN-P15-P17
20GEF4C1K0MNDNNNNN-P17
20GEF4C1K1LNANNNNN
20GEF4C1K1LNANNNNN-P50
20GEF4C1K1LNDNNNNN
20GEF4C1K1MNANNNNN-P15-P17
20GEF4C1K2LNANNNNN
20GEF4C1K2LNANNNNN-P15-P17
20GEF4C1K2LNANNNNN-P50
20GEF4C1K2LNDNNNNN
20GEF4C1K2MNANNNNN-P15-P17
20GEF4C1K4LNANNNNN
20GEF4C1K4LNANNNNN-P15
20GEF4C1K4LNANNNNN-P15-P51
20GEF4C1K4LNANNNNN-P50
20GEF4C1K4LNDNNNNN
20GEF4C1K4MNANNNNN
20GEF4C1K6LNANNNNN
20GEF4C1K6LNANNNNN-C0
20GEF4C1K6LNANNNNN-P15
20GEF4C1K6LNANNNNN-P15-P16
20GEF4C1K6LNANNNNN-P50
20GEF4C1K6LNDNNNNN
20GEF4C1K6LNDNNNNN-C0
20GEF4C1K6MNANNNNN-P15-P16
20GEF4C1K7LNANNNNN
20GEF4C1K7LNANNNNN-P50
20GEF4C1K7LNDNNNNN
20GEF4C2K1LNANNNNN
20GEF4C2K1LNANNNNN-P50
20GEF4C2K1LNDNNNNN
20GEF4C2K8LNANNNNN
20GEF4C2K8LNDNNNNN
20GEF4C302KNDNNNNN-C0-P15-P17-
20GEF4C302LNANNNNN
20GEF4C302LNANNNNN-C0
20GEF4C302LNANNNNN-P50
20GEF4C302LNDNNNNN
20GEF4C302MNANNNNN
20GEF4C367LNANNNNN
20GEF4C367LNANNNNN-P50
20GEF4C367LNDNNNNN
20GEF4C367LNDNNNNN-C0
20GEF4C367MNDNNNNN-P17
20GEF4C3K5LNANNNNN
20GEF4C3K5LNDNNNNN
20GEF4C460LNANNNNN
20GEF4C460LNANNNNN-P50
20GEF4C460LNDNNNNN
20GEF4C460LNDNNNNN-C0
20GEF4C460MNDNNNNN-C0
20GEF4C4K2LNDNNNNN
20GEF4C540JNDNNNNN-C0-P15-P17
20GEF4C540LNANNNNN
20GEF4C540LNANNNNN-P50
20GEF4C540LNDNNNNN
20GEF4C540LNDNNNNN-C0
20GEF4C540MNDNNNNN
20GEF4C540MNDNNNNN-C0
20GEF4C540MNDNNNNN-P15-P17
20GEF4C585KNDNNNNN
20GEF4C585LNANNNNN
20GEF4C585LNANNNNN-P15-P17
20GEF4C585LNANNNNN-P50
20GEF4C585LNDNNNNN
20GEF4C585MNANNNNN
20GEF4C5K6LNDNNNNN
20GEF4C650KNDNNNNN
20GEF4C650KNDNNNNN-C0
20GEF4C650LNANNNNN
20GEF4C650LNANNNNN-P15-P17
20GEF4C650LNANNNNN-P50
20GEF4C650LNDNNNNN
20GEF4C650LNDNNNNN-C0
20GEF4C650LNDNNNNN-P15-P17
20GEF4C650MNANNNNN
20GEF4C650MNDNNNNN-C0
20GEF4C650MNDNNNNN-P15-P17
20GEF4C750KNDNNNNN-C0
20GEF4C750LNANNNNN
20GEF4C750LNANNNNN-P50
20GEF4C750LNDNNNNN
20GEF4C750LNDNNNNN-C0
20GEF4C770KNDNNNNN-C0
20GEF4C770LNANNNNN
20GEF4C770LNANNNNN-P15-P17
20GEF4C770LNANNNNN-P50
20GEF4C770LNDNNNNN
20GEF4C770LNDNNNNN-C0
20GEF4C770MNANNNNN
20GEF4C770MNDNNNNN-C0
20GEF4C770MNDNNNNN-P15-P17
20GEF4C7K0JNDNNNNN-P60
20GEF4C7K0LNDNNNNN
20GEF4C920LNANNNNN
20GEF4C920LNANNNNN-C0
20GEF4C920LNANNNNN-P15-P17
20GEF4C920LNANNNNN-P50
20GEF4C920LNDNNNNN
20GEF4C920LNDNNNNN-C0
20GEF4C920MNANNNNN-P15-P17
20GEF4C920MNDNNNNN-C0
20GEF4C920MNDNNNNN-P15-P17
20GEF4D1K0LNDNNNNN
20GEF4D1K0LNDNNNNN-C0-P15
20GEF4D1K0LNDNNNNN-C0-P17
20GEF4D1K0LNDNNNNN-P15-P17
20GEF4D1K0MNDNNNNN
20GEF4D1K0MNDNNNNN-C0-P15
20GEF4D1K0MNDNNNNN-C0-P15-P17
20GEF4D1K1LNDNNNNN
20GEF4D1K1LNDNNNNN-P17
20GEF4D1K1LNDNNNNN-P50
20GEF4D1K1MNDNNNNN-C0-P15
20GEF4D1K1MNDNNNNN-C0-P15-P17
20GEF4D1K3KNDNNNNN-C0-P15-P17-
20GEF4D1K3LNDNNNNN
20GEF4D1K3LNDNNNNN-C0
20GEF4D1K3LNDNNNNN-C0-P17
20GEF4D1K3MNDNNNNN-C0-P15
20GEF4D1K3MNDNNNNN-C0-P15-P17
20GEF4D1K4LNDNNNNN
20GEF4D2K0LNDNNNNN-C0
20GEF4D2K6LNDNNNNN-C0
20GEF4D302LNDNNNNN-C0-P15-P50
20GEF4D361LNANNNNN
20GEF4D361LNANNNNN-C0
20GEF4D361LNANNNNN-P50
20GEF4D361LNDNNNNN
20GEF4D361LNDNNNNN-C0
20GEF4D361LNDNNNNN-P15-P17
20GEF4D361LNDNNNNN-P50
20GEF4D361MNDNNNNN
20GEF4D361MNDNNNNN-P15-P17
20GEF4D3K4LNDNNNNN-C0
20GEF4D430LNANNNNN-P15
20GEF4D430LNANNNNN-P15-P17
20GEF4D430LNDNNNNN-C0
20GEF4D430LNDNNNNN-P15
20GEF4D430MNDNNNNN-P15-P17
20GEF4D505LNDNNNNN
20GEF4D505LNDNNNNN-C0
20GEF4D505LNDNNNNN-P15-P17-P50
20GEF4D505MNDNNNNN-C0-P15
20GEF4D545JNDNNNNN
20GEF4D545MNDNNNNN
20GEF4D545MNDNNNNN-P51
20GEF4D5K4JNDNNNNN-C0-P50
20GEF4D5K4JNDNNNNN-C0-P50-P60
20GEF4D5K4KNDNNNNN-P15-P16

5. Product Advantages

1000A High-Current Protection: Ideal for large industrial motors, main distribution lines, and heavy-duty equipment.

25kA Breaking Capacity: Instantly handles short circuits to prevent equipment damage and fire risks.

Ecosystem Compatibility: Seamlessly integrates with Allen Bradley automation components for unified system protection.

Industrial-Grade Durability: Reinforced housing and alloy contacts ensure long-term reliability in high-power environments.

Enhanced Safety Features: Lockable toggle and auxiliary contacts enable secure operation and remote monitoring.

Global Certification: UL, IEC, CE compliant for worldwide deployment in large-scale industrial applications.

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

www.wheat-auto.com (Changzhou Wheat Automation Technology Co., Ltd.) specializes in industrial automation components distribution and precision sensor manufacturing, focusing on agricultural processing, large-scale manufacturing, and logistics sectors. Adding the Allen Bradley 20GEF4C1K0MNDNNNNN to its portfolio strengthens its high-current electrical protection offerings, complementing its existing range of low-to-mid current breakers, VFDs, and sensors.

As a one-stop automation supplier, the company caters to clients operating large industrial facilities needing reliable protection for high-power systems—from main distribution lines to heavy-duty motors. The 1000A rating of this Allen Bradley Miniature Circuit Breaker fills a critical gap in its product lineup, addressing the needs of clients in large agricultural processing plants, manufacturing facilities, and logistics hubs with high-power requirements. By offering genuine Allen Bradley Miniature Circuit Breakers across the current spectrum (low, mid, high), www.wheat-auto.com reinforces its position as a comprehensive supplier, leveraging Allen Bradley’s brand trust to serve industries requiring robust, certified high-current protection. This addition aligns with its mission to provide end-to-end automation solutions, enabling clients to source all critical electrical components from a single, reliable partner.

7. Application Scenarios

Large-Scale Agricultural Processing Plants: Safeguards main power distribution lines and heavy-duty motors in grain mills, wheat processing facilities, and bulk storage systems.

Manufacturing Factories: Protects high-power assembly lines, large industrial motors, and main electrical distribution networks.

Logistics & Warehousing Hubs: Secures high-current circuits for automated conveyor systems, heavy-duty sorting machinery, and large refrigeration units.

Commercial & Industrial Buildings: Shields main electrical panels and high-power HVAC systems in large office complexes and industrial parks.

Water & Wastewater Treatment Plants: Safeguards large pump motors, aeration systems, and main power distribution lines.

Renewable Energy Facilities: Protects high-current circuits in solar farms, wind energy plants, and energy storage systems.

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