140MG-H8E-D10

Overview of Allen-Bradley 140MG-H8E-D10 Motor Protection Circuit Breaker

The Allen-Bradley 140MG-H8E-D10 is a motor protection circuit breaker (MPCB) from the 140MG series designed for industrial use. It features an adjustable thermal and magnetic trip unit, rated for 100 Amps with a 35 to 65 kA interrupting capacity at 480V AC. This 3-pole breaker offers overload, short-circuit, and branch circuit protection specifically tailored for motors.

Key Features of Allen-Bradley - 140MG-H8E-D10

• Frame Size: H frame suitable for motor protection duties.
• Trip Unit: Adjustable thermal and magnetic (TMD) for precise overload and short circuit response.
• Rated Current: 100 Amps.
• Interrupting Capacity: 35-65 kA at 480V AC.
• Poles: 3 poles for three-phase motor protection.
• Auxiliary Contacts: 1 normally open and 1 normally closed auxiliary contact for signaling and control.
• Voltage Rating: 480V AC.
• Operating Frequency: Supports 50/60 Hz.
• Applications: Ideal for motor branch circuit protection including overload and short circuit protection.

Technical Specs of 140MG-H8E-D10

Applications / Use Case

The 140MG-H8E-D10 is primarily used in motor control applications to provide reliable protection against overloads and short circuits. It is suitable for manufacturing plants, industrial machines, and automated systems requiring motor branch circuit protection.