 CHICAGO--BUSINESS WIRE--Littelfuse, Inc. NASDAQ: LFUS, a global manufacturer of leading technologies in circuit protection, power control, and sensing, today announced it has acquired Hartland Controls. Headquartered in Rock Falls, Illinois, Hartland Controls is a manufacturer and leading supplier of electrical components used primarily in heating, ventilation, air conditioning, and refrigeration HVACR and other industrial and control systems applications. For 2020, Hartland Controls had 