Rockwell Automation 140U-N-BB4M Circuit Breaker Accessory
The Allen-Bradley 140U-N-BB4M Circuit Breaker Accessory delivers robust electrical protection against overloads and short circuits in demanding industrial environments. Engineered with stainless steel construction and IP66-rated housing, this critical component ensures operational continuity while extending equipment lifespan across manufacturing, power distribution, and process control applications.
Technical Specifications
- Brand: Allen Bradley
- Model: 140U-N-BB4M
- Type: Circuit Breaker Accessory
- Rated Current: Up to 1000A
- Operating Voltage: 24-480V AC
- Protection Rating: IP66 (Dust-tight & Water-resistant)
- Material: Stainless Steel Housing
- Weight: 0.5 kg
- Dimensions: 15 x 8 x 20 cm
Key Advantages
- Compact footprint enables installation in space-constrained panels
- Corrosion-resistant construction withstands harsh industrial environments
- Prevents costly downtime by interrupting fault currents within milliseconds
- Compatible with standard DIN rail and panel mounting systems


About Stoker Automation Technology
With 20+ years serving industrial automation sectors, Stoker Automation maintains a 5000m² warehouse stocking 30,000+ industrial components. We specialize in mission-critical spares for metallurgy, power generation, oil & gas, and manufacturing operations. Contact our technical team for obsolete part sourcing or custom solutions.
Professional Support Services
- 2-year warranty on selected industrial components
- 24-hour technical support for installation & troubleshooting
- Expedited global shipping from our ISO-certified facility
- Custom sourcing for discontinued automation parts
Need assistance? Chat via WhatsApp or email abbdcs36@gmail.com








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