140U-KTD3-D35

The 140U-KTD3-D35 circuit breaker is a 140U molded case circuit breaker manufactured by Allen-Bradley as a member of the 140U MCCB series. It has a K Frame size with a current rating of 400 Amps. The circuit breaker also features a trip unit with fixed thermal as well as adjustable magnetic protection. The Allen-Bradley 140U-KTD3-D35 circuit breaker has three poles with a current rating of up to 3500 Amps. Other specifications of the K Frame size circuit breakers include field-installed internal control modules, flex cable operators, molded case switches, and rotary operators. Other features are high interrupting ratings in compact dimensions, field-installed or factory-installed accessories, and global approvals and listings for universal applications across the world.

The Allen-Bradley 140U-KTD3-D35 molded case circuit breaker is approved and listed for compliance with the UL 489, CE, CSA, IEC, and KEMA-KEUR standards. At 300 Amps of operational current, this circuit breaker has a fixed thermal trip adjustment rating of 300 Amps and a magnetic trip adjustable current range of 1500 to 3000 Amps. It also features interrupting ratings of 65 kiloamps at 380 to 415 Volts, 35 kiloamps at 600 Volts, 65 kiloamps at 480 Volts, and 13 kiloamps at 690 Volts. Additionally, it has flex cable operating devices as well as rotary variable-depth operating mechanisms. It has an electrical current range of 70 to 1200 Amps with options including a long time or a short time setting, long time or short time or high instantaneous settings, long time or short time or ground fault settings, and long time or short time or high instantaneous or ground fault settings. The 140U-KTD3-D35 circuit breaker also has a thermal-magnetic current range of 15 to 800 Amps, and the molded case switch current range is 125 to 1200 Amps.