Title: Allen-Bradley 140-L11 Motor Protection Circuit Breaker (MPCB) | Industrial Motor Control & Protection | Rockwell Automation
Product Overview: The Allen-Bradley 140-L11 is a high-performance Motor Protection Circuit Breaker (MPCB) designed to provide comprehensive protection and control for electric motors in diverse industrial applications. As a critical component within Rockwell Automation's esteemed industrial control portfolio, the 140-L11 integrates three essential functions into a single, compact device: reliable motor disconnect, precise thermal overload protection, and robust magnetic short-circuit protection. This all-in-one solution simplifies panel design, reduces wiring complexity, and enhances overall system reliability and safety. Ideal for safeguarding valuable machinery and ensuring continuous operation, the 140-L11 is engineered for durability and consistent performance in demanding industrial environments, minimizing downtime and maintenance costs.
Key Features & Benefits:

Integrated Motor Protection: Combines disconnect, thermal overload, and magnetic short-circuit protection in one compact unit, streamlining panel design and reducing component count.
Adjustable Thermal Trip: Features an adjustable thermal trip setting, allowing precise calibration to the motor's full-load current (FLA), preventing nuisance tripping and optimizing motor lifespan.
High Breaking Capacity: Engineered to safely interrupt high fault currents, protecting motors, cables, and other downstream equipment from damage due to short circuits.
Space-Saving Design: Its compact footprint helps maximize panel space utilization, facilitating more efficient and organized control cabinet layouts.
Easy DIN Rail Mounting: Designed for quick and secure installation on standard DIN rails, simplifying setup and reducing installation time.
Enhanced Safety Features: Provides reliable isolation for maintenance and troubleshooting, improving operator safety and compliance with lockout/tagout procedures.
Robust Construction: Built to withstand harsh industrial conditions, offering exceptional durability and a long operational life, even in challenging environments.
Global Compliance: Meets international standards and certifications, ensuring suitability for a wide range of industrial applications worldwide.
Reduced Wiring Complexity: Eliminates the need for separate overload relays and fuses, significantly simplifying control wiring and reducing potential points of failure.
Improved System Uptime: Reliable protection minimizes unexpected motor failures and associated downtime, contributing to higher productivity and operational efficiency.
Applications:

Industrial Motor Control Centers (MCCs)
HVAC Systems and Ventilation Equipment
Pumps, Fans, and Compressors
Conveyor Systems and Material Handling
Machine Tools and Processing Equipment
Packaging Machinery
Textile Machinery
Water and Wastewater Treatment Plants
Commercial Buildings and Infrastructure Projects
Any application requiring robust and integrated motor protection
Technical Specifications:

Part Number: 140-L11
Part Number (No Special Characters): 140L11
Product Type: Motor Protection Circuit Breaker (MPCB)
Series: Allen-Bradley 140-L Series
Nominal Current (In): 1.1 Amperes (A)
Adjustable Thermal Trip Range: 0.7 - 1.1 Amperes (A)
Magnetic Trip Setting: Fixed at 13 x In (approx. 14.3A)
Rated Operational Voltage (Ue): Up to 690V AC
Rated Insulation Voltage (Ui): 690V AC
Rated Impulse Withstand Voltage (Uimp): 6 kV
Breaking Capacity (Icu): 10 kA @ 400V AC
Number of Poles: 3-Pole
Mounting Type: DIN Rail Mount (35mm)
Protection Degree: IP20 (Terminals)
Operating Temperature: -20°C to +60°C (-4°F to +140°F)
Dimensions (H x W x D): 90 mm x 45 mm x 80 mm (approximate)
Weight: 0.25 kg (250 grams)
Standards & Certifications: UL, CSA, CE, IEC 60947-2, IEC 60947-4-1