Introduction: Cutler Hammer is one of the five subsidiaries of the well-known multinational corporation Eaton Corporation in the United States. Cutler Hammer is a world leading electrical company in the development and manufacturing of distribution equipment, electrical products, and advanced industrial automation. In 1994, Eaton Corporation acquired the control and distribution division of Westinghouse Electric Company and incorporated it into the Caterpillar Hammer Company. Since then, the essence of Catla Hammer electrical products has been integrated with Westinghouse electrical products. Suzhou Kaima Electric Appliance Co., Ltd. is a joint venture established by Katara Hanmo Company and Suzhou Electric Appliance Industry Group in July 1996, and later wholly owned by Eaton Corporation in April 1998, mainly engaged in the production of electrical components and control products. Main products: Cutler Hammer contactors, molded case circuit breakers, residual current devices, air circuit breakers, vacuum circuit breakers, control cabinets.