The VR B350K Water Heater Dimmer Control is a high-resistance potentiometer specifically engineered for precision power modulation in electronic heating systems. This specialized component features PCB-ready vertical pins and an extended 20mm handle, making it the perfect solution for temperature regulation in modern electric water heaters and industrial control boards.
High-Precision B350K Rating: Rated at 350K ohms (B350K) with a linear taper, providing an expansive resistance range for ultra-fine adjustment of heating intensity.
PCB-Mount Vertical Terminals: Designed with specialized straight-pin terminals that allow for direct, secure soldering into Printed Circuit Boards (PCBs).
Extended 20mm Handle Shaft: Features an elongated knurled metal shaft to ensure easy access through control panels, equipment housings, or thick insulation layers.
Robust Industrial Build: Encased in a reinforced metal and phenolic housing, built to maintain mechanical integrity during continuous thermal cycles.
Stable Linear Response: The "B" type taper ensures that power changes happen at a constant rate throughout the dial's rotation for predictable user control.
Integrated Panel Lock: Comes with a threaded mounting bushing and nut, providing a secondary point of stability when mounted to a chassis.
Resistance Value: 350K Ω.
Taper: Linear (Type B).
Terminal Style: 3-Pin PCB Vertical Pins.
Shaft Length: 20mm.
Material: Zinc-alloy housing with a high-durability resistance track.
Electronic Water Heaters: Primarily used in the control circuitry of residential water heaters that utilize PCB-based power regulators.
PCB-Based Dimmer Modules: Ideal for manufacturing light dimmers or speed controllers where the potentiometer must be soldered directly to a board.
Industrial Thermostats: Used in precision heating equipment requiring high-resistance manual inputs for set-point adjustment.
Can I use this PCB version if my original part has solder lugs? While the electrical resistance is the same, this model is designed for PCB mounting with straight pins. If your original part uses wire loops (solder lugs), you may prefer the B250K model or similar lug-style variants.
Why is the 350K resistance value used? The higher 350K resistance allows for more subtle adjustments at the low end of the power spectrum compared to B50K or B100K models. This is critical for systems that require a very wide range of heat settings.
Will my existing knob fit this 20mm shaft? The 20mm knurled split shaft is an industry standard. Most standard 6mm "push-on" knobs will fit perfectly and stay secure due to the split-shaft compression.
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