Caterpillar 3E2033 Industrial Electrical Switch

The Caterpillar 3E2033 Parking Brake Pressure Switch is a rugged, normally open pressure switch that activates an actuator when brake-line pressure reaches 640 kPa (93 psi), helping ensure reliable brake monitoring on Cat heavy equipment. It uses a pigtail connector with a pin-and-socket interface and a 1/4-18 NPTF threaded mounting, and is designed to be dust proof and splash resistant for long service life. The unit measures 12.11 in in overall length with a 7.87 in wire lead and a 0.56 in hex size, and it senses media including oil, fuel, or air. Compatible models for part number 3E-2033 include: Wheel Tractor — 633E II, 657E, 637E, 615C II, 631E, 651E; Truck — 773D, 793B, 793C, 769D, 769C, 777C, 789B, 777D, 773B, 775D, 785B; Quarry Truck — 771D, 771C, 775B; Tractor — 776D, 776C, 772B, 784B, 768C.