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-B40 is a robust molded case circuit breaker from the 140U MCB series, designed with a D-Frame type and rated at a 4 Amp current. It offers a substantial breaking capacity of 100 kA and operates effectively within a frequency range of 50 to 60 Hertz, accommodating either 2 or 3-pole configurations. This model excels in offering thermal-magnetic and fixed thermal trip units, with auxiliary alarm contacts enhancing fault detection. Suitable for HACR applications and compact installations, it supports UL489 compliance and backfeeding up to 480Y/277V, with accessory options like eco-connection modules and three-phase compact busbars ensuring versatility. Robust in design, it maintains operational integrity across a broad temperature range and up to an altitude of 2000 meters, ensuring reliable performance in diverse environments.