Manufacturers We Represent

Critical Power Industry

The Arthur N. Ulrich Company is proud to represent some of the best manufacturers in the critical power industry and we’re continuously evaluating new opportunities. To explore the companies we represent and their respective product lines visit our manufacturers pages.


Russelectric® is an international company that custom designs and builds power control systems and equipment to meet the stringent performance and reliability requirements of healthcare, data center, communications and other critical facilities. Russelectric – a Siemen’s business is one of the world’s most respected manufacturer of automatic transfer switches, power control systems and related equipment.


For 100+ years SAFT stationary batteries have provided the peace of mind of knowing that they will work when you need them to work, for up to 20+ years, in challenging conditions, with low maintenance. SAFT provides a large choice of technologies (nickel-cadmium and lithium ion) as well as a complete range of low, medium and high rate characteristics.


For over 70 years, BENDER has been a global leader in ground fault protection. From industrial plants to mines to hospitals, customers trust BENDER to protect their electrical systems. BENDER’s isolated power systems for healthcare operating rooms and critical care areas are designed in strict compliance of new NFPA 99 wet location requirements.

La Marche Manufacturing Co.

Since 1945, La Marche Manufacturing Co., has been providing reliable power conversion products.
La Marche products include industrial battery chargers for float and motive applications such as generator starting, telecom, utility, railroad signaling, fire pumps, marine, forklifts and airport ground support. La Marche is one of the only manufacturer’s to offer multiple charging technologies to meet virtually an requirement.

Thor Systems, Inc.

Thor Systems, Inc. is a dedicated manufacturer of high quality Surge Protection Devices (SPDs) for a variety of critical applications including service entrances at large facilities to primary and secondary building distribution systems. These systems can include large computer rooms and data processing centers as well as manufacturing process control, small business and individual residential equipment.

ESL Power Systems, Inc.

ESL Power Systems, Inc., specializes in engineered power distribution solutions for portable generation connection during emergencies. ESL’s UL/cUL 1008 listed products serve gas stations, grocery stores, data centers, cold storage facilities, manufacturing plants, healthcare facilities, water/wastewater treatment plants, distribution centers, call centers and much more to meet 2017 NEC 700.3(F) requirements.

Simplex Load Banks

Simplex Load Banks is a certified ISO 9001 2015 certified manufacturer of electrical test systems (load banks) for the standby power generation industry. Hospitals, schools, public utilties and other mission critical environments rely on Simplex products to provide emergency backup electrical power.