【Aluminum Housed Power Resistors】 The shell is made of aluminum alloy with heat dissipation grooves on the surface. Features high temperature resistance, vibration resistance, and long-term stability. 【Parameters】 Power: 50W, Resistance Value: 3 Ohm, Tolerance: 5%, Shell Material: Aluminum, Color: Gold Tone, Technology: Wirewound, Terminal: Copper, Mounting Type: Chassis Mount. Operating Temperature: -55 - +125 degrees. 【High Performance】 High precision, high power load, high insulation capability, low standard induction resistance, high stability, and robust architecture. Small size with great power. Good operational reliability. 【Easy to Install】 Size: 50mm X 21mm X 15mm. Designed for chassis mounting. Suitable for heat sink installation. Screw tabs. Various connection methods for convenient installation. 【Wide Range of Applications】 Good flexibility, great for machine protection. Applicable to industrial machinery, load testing, aging test power supplies, automatic control devices, etc. (e.g.: inverters, speakers, elevators, cranes, audio, winches, generators)