140MT-C3E-B63

Overview of Allen Bradley 140MT-C3E-B63

The Allen Bradley 140MT-C3E-B63 is a motor protection circuit breaker designed for reliable protection of motors in industrial automation systems. Part of the 140MT series, it utilizes a thermal-magnetic trip mechanism to guard against overload and short-circuit conditions while maintaining continuous operation. With a 4.0–6.3 amp adjustable range and 480V AC rating, the 140MT-C3E-B63 is suitable for a broad scope of low-voltage motor applications. This breaker is UL Listed as a Manual Self-Protected Combination Motor Controller (Type E), supporting use as a disconnect. Its compact C frame design allows for efficient panel space utilization and integration with Allen Bradley contactor systems.

Key Features of Allen Bradley 140MT-C3E-B63

• Adjustable protection for motor circuits between 4.0–6.3 amps
• Standard breaking capacity with a fixed magnetic trip (14 x Ie)
• Trip Class 10 for rapid response to overloads
• 480V AC supply voltage compatibility
• C frame size for space-efficient mounting and modularity
• Manual rotary actuator with lockable knob options
• UL Listed Type E—suitable as a motor disconnect and for group installations

Technical Specs of 140MT-C3E-B63

• Current Range: 4.0–6.3 A (thermal adjustable)
• Voltage Rating: 480 V AC
• Trip Class: 10
• Standard magnetic trip: Fixed at 14 x Ie
• Frame Size: C
• Type: Rotary, Motor Protector
• UL Listed, suitable for use as motor disconnect

Applications / Use Case

Allen Bradley 140MT-C3E-B63 is applied across a wide range of automated control systems that require robust motor protection. It is ideal for panel builders, OEMs, and maintenance teams needing reliable overload and short-circuit defense for motors in conveyors, pumps, HVAC units, packaging machines, and more. The adjustable current setting and compatibility with Allen Bradley contactors make it a strong choice for integration in coordinated motor circuits. Its suitability as a disconnect and compatibility with group installations support safer, code-compliant design in industrial control panels. Users benefit from straightforward rotary operation, space-saving installation, and trusted Allen Bradley durability in demanding environments.

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