A-B 140UT-D7D3 Circuit Breaker

Allen-Bradley 140UT-D7D3 Circuit Breaker

Product Description

The Allen-Bradley 140UT-D7D3 is a current-limiting molded case circuit breaker (MCCB) from the 140UT-D series. It is designed for industrial power distribution and motor control applications, providing protection against overloads and short circuits. The D-frame breaker uses a compact design suitable for control panels, motor control centers, and industrial electrical systems.

Technical Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 140UT-D7D3
• Product Type: Molded Case Circuit Breaker (MCCB)
• Series: 140UT-D
• Frame Size: D Frame
• Number of Poles: 3 Poles
• Trip Type: Fixed thermal magnetic
• Rated Voltage: Up to 480 VAC (system dependent)
• Rated Frequency: 50/60 Hz
• Interrupt Rating: Up to 100 kA (depending on current rating version)
• Mounting: Panel mounting
• Application: Industrial circuit protection

Model Code Explanation

• 140UT → Allen-Bradley molded case circuit breaker series
• D → D-frame size
• 7D3 → 3-pole configuration with specific trip/current code
• Actual rated current depends on the complete suffix (for example, 140UT-D7D3-A50, B20, etc.)

Advantages & Features

• Current-limiting protection technology
• Provides reliable overload and short-circuit protection
• Compact D-frame design for industrial applications
• High interrupting capability
• Suitable for motor control and power distribution systems
• Compatible with Allen-Bradley industrial control equipment

Applications

• Industrial control cabinets
• Motor control centers (MCC)
• Factory automation systems
• Power distribution panels
• Machine protection systems
• Industrial equipment power circuits

Notes / Precautions

• Confirm the complete catalog number suffix before installation
• Verify rated current and interrupt rating requirements
• Check voltage compatibility with the electrical system
• Use correct accessories and mounting hardware
• Installation should follow electrical safety standards