Industrial Automation Co. is NOT an Authorized Rockwell Distributor - we have our own unique inventory and sourcing relationships. Review our Reseller notice, here.

The Allen-Bradley 140U-D6D3-B50 is a versatile MCB circuit breaker designed with safety-enhancing terminal covers that ensure phase-to-phase insulation and protect against accidental contact with live parts. It features a motor operator for remote operation, making it suitable for power supply network supervisory control systems, complemented by a padlock device for added security. With a robust breaking capacity of 100 kA, a rated insulation voltage of 690 Volts IEC, and a rated frequency of 50 to 60 Hertz, this circuit breaker offers efficient performance across 2 or 3 pole configurations. Additionally, it supports flexible operational mechanisms including shunt trip, undervoltage release, and rotary operators, all within a user-friendly design that requires no tools for internal adjustments.