PATIKIL PTA221125TT0311 100W 3 Ohm Aluminium Housing Resistors, 5-Pack

For lighting, audio and industrial-control projects that call for a 100W, 3 ohm resistor, the PATIKIL aluminium housing resistor combines a wirewound design with screw-mounted installation. This five-pack gives you units with the same listed resistance and power rating for equipment builds, repairs or automation work.

The grooved aluminium housing is designed for heat dissipation, while the chassis-mount format provides a straightforward way to secure each resistor to a metal mounting surface. Its compact dimensions help when planning a practical installation.

What you’ll notice day to day

Each resistor is rated at 100W with a resistance of 3 ohms and 5% tolerance. The aluminium shell has cooling grooves, and the screw-mount arrangement makes it suitable for installation on a cooling plate or metal board. For a project needing more than one resistor, having five units in the pack offers a consistent set to work with rather than sourcing them individually.

These resistors are listed for lighting products, audio equipment, frequency converters, frequency dividers, inverters and other industrial-control applications. For example, a builder assembling or servicing a power-supply or automation setup can mount a resistor to the chassis, then connect wires to the terminals at either end. Need a resistor that can be secured directly to a mounting surface instead of handled as a loose component? This housing and screw-mount design is made for that kind of installation.

At a glance

• Type: Wirewound aluminium housing resistor
• Power: 100W
• Resistance: 3 ohms
• Tolerance: 5%
• Material and colour: Aluminium, gold
• Mounting: Chassis-mounted with screws
• Mounting-hole diameter: 3.4mm / 0.13 inch
• Mounting-hole distance: 44mm / 1.73 inch
• Total size: 85 x 21 x 16mm / 3.34 x 0.83 x 0.63 inch (L x W x H)
• What’s included: 5 aluminium housing resistors

Tips for day-to-day use

Mount the resistor on a metal board or suitable cooling plate, using screws that fit the mounting holes, and connect the wires to the terminals at both ends. The resistor becomes hot during operation, so avoid touching it while it is working. Keep the mounting surface non-flammable, plastic, rubber, paper and wood are not suitable surfaces for installation. These practical steps support a secure setup while making use of the housing’s intended chassis-mounted format.

Should you buy it?

This five-pack suits projects where the design calls for 100W, 3 ohm wirewound resistors with a screw-mounted aluminium housing. It brings the key selection details together—power rating, resistance, tolerance and mounting dimensions—so you can assess the fit for lighting, audio or industrial-control work before installation. Choose it when your application calls for this specific resistance and rating, and you want five chassis-mount units ready to integrate into a suitable metal-surface setup.