140M-D8E-C10

Overview of Allen Bradley 140M-D8E-C10

The Allen Bradley 140M-D8E-C10 is a Class 10 manual motor protector designed for robust, direct control of motor branch circuits. Built for industrial environments, this high-performance device combines short circuit and overload protection in a compact DIN-rail-mount package. Its current adjustment dial ranges from 6.3 to 10 amps, making it suitable for a variety of fractional horsepower and small three-phase motors. The 140M-D8E-C10 can be listed as a Manual, Self-Protected Combination Motor Controller, meeting NEC/CEC requirements for individual motor circuit protection without additional devices in many applications. It is commonly installed on standard 35mm DIN rails, supporting easy integration into control panels.

Key Features of Allen Bradley 140M-D8E-C10

• Frame D size, with adjustable trip range from 6.3 to 10 amps for precise motor protection.
• Class 10 trip curve delivers fast response under overload and short circuit conditions.
• Standard magnetic trip (fixed at 13 x Ie) for high-performance short circuit protection.
• Manual rotary ON/OFF operator for direct control at the panel.
• Supports 200–690 VAC operation, suitable for global three-phase applications.
• Compact DIN-rail mounting for easy installation and panel optimization.
• Two cULus listings: as Manual Motor Controller and as Manual, Self-Protected Combination Motor Controller (refer to local codes for application).
• Meeting major North American and international standards for motor branch circuit protection.
• No additional overload relay required when used as a combination motor starter (in compliant jurisdictions).
• Designed for high reliability in demanding industrial environments.

Technical Specs of 140M-D8E-C10

Applications / Use Case

The Allen Bradley 140M-D8E-C10 is ideal for protecting and directly controlling small motors in industrial automation, HVAC, packaging, and material handling systems. Its combination of overload and short circuit protection simplifies panel designs by eliminating the need for separate thermal overload relays in compliant installations. The device is well-suited for applications requiring manual motor control, remote mounting, or space-efficient solutions. Installers value its straightforward setup, reliable trip performance, and compliance with major North American and global electrical codes. Whether used as a stand-alone manual motor controller or as part of a combination starter, the 140M-D8E-C10 delivers consistent protection for motors up to 4 kW in three-phase environments.

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