uxcell 25W 4 Ohm 5% Aluminum Housing Resistor Screw Tap Chassis Mounted Aluminum Case Wirewound Resistor Load Resistors, 21mm Mounting Distance 2 Pcs

25 Watt 4 Ohm Aluminum Case Resistor with 5% TolerancePower: 25WResistance: 4 ohmTolerance: 5%Connection Type: RodsBoard Length: 28mmMounting Hole Diameter: 3.5mm Distance Between Mounting Hole: 21mmMaterials: Nickel alloys Wire Wound Resistor with Aluminum CaseColor: GoldPackage Content: 2 pcs 25W 4ohm Aluminum ResistorSuggestion:a. The load resistor will get huge hot, please don't touch it when the resistor is working.Because alumnium resistor is a braking device which transfers Electric energy to Thermal energy.This is a normal physical phenomenon.b. The load resistor should be mounted on metal board, not on flammable board such as plastic board,rubber,paper,wood and etc.c. We recommend a 30%-50% increase in rated power based on your actual load power and add a heat sink device when it is necessary.If you choose a 30% increase in rated power, you must add a heat sink device.If you choose a 50% increase in rated power, you can add a heat sink device for the best use of its performance.d. Not recommend to use it for Automotive repair or refit unless you have professional knowledge.