Allen Bradley 140MT-C-KB

The Allen Bradley 140MT-C-KB is a blue padlockable operating knob designed for use with the 140MT motor circuit protectors and 140UT circuit breakers. This knob enhances safety by allowing the operator to securely lock the device in the off position, helping to prevent unauthorized or accidental operation. The 140MT motor circuit protectors themselves are rated up to 40A and provide reliable magnetic short-circuit protection. Commonly used in three-component motor starters alongside contactors and overload relays, these protectors support tap conductor ratings that enable the use of smaller conductors in grouped motor setups, helping to reduce installation costs. Distributed through BSP Automation, the 140MT-C-KB knob is a practical accessory for maintaining secure and efficient motor protection configurations.

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