Would there be a problem using this switch for 120vac at less than 5 amps?

This switch is for 12 volt DC current. Not 120v AC.

Do they make a universal 12 volt rheostat switch for a blower motor to control the speed?

Probably, the problem is each blower motor will be different - amperage could be a problem. You would need to know what the volt/amps is for the existing and then look for specs on others.

which terminal is ground

This is an on-off switch so there is no ground. In a 12v system, auto, boat, rv, you switch the "hot" wire and leave the ground directly connected to the load (light, pump, etc.). I am using this in an RV on the battery box. These days, your smoke detector and/or CO2 detector are always on, so this allows me to turn off the battery when I want to remove it without the annoying spark.

Daiertek Automotive Toggle Switch 50a 12vdc Heavy Duty 12 Volt

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

⚡ Flip the switch on reliability and style!

BUILT TO LAST - Robust aluminum alloy shell resists wear and tear in demanding environments.
PRECISION FIT - 12mm mounting hole ensures seamless panel integration without hassle.
EFFORTLESS WIRING - Screw terminals provide quick, secure connections or easy soldering options.
VERSATILE CONTROL - Ideal for lights, fog lamps, dome lights, and other vehicle accessories.
POWER THROUGH ANYTHING - Handles up to 50 amps for your toughest automotive electrical needs.

The DaierTek Automotive Toggle Switch is a heavy-duty, 50A 12V DC SPST switch crafted from durable aluminum and copper. Designed for easy panel mounting with a 12mm hole and screw terminals, it offers reliable ON/OFF control for automotive lighting and accessories, backed by high dielectric strength and excellent insulation.

Specifications

ASIN	B07SJS8BFM
Best Sellers Rank	#12,358 in Automotive ( See Top 100 in Automotive ) #40 in Automotive Replacement Toggle Switches
Brand	DAIERTEK
Brand Name	DAIERTEK
Circuit Type	2-way
Color	White
Connector Type	Screw
Contact Material	Copper,metal
Contact Resistance	50
Contact Type	Spst
Current Rating	50 Amps
Customer Reviews	4.5 out of 5 stars 723 Reviews
Dielectric Strength	1500 volts
Insulation Resistance	100 Megaohms
Item Weight	38 Grams
Manufacturer	DaierTek
Material	Metal
Material Type	Metal
Maximum Current	50 Amps
Model	R13-401-101
Mounting Hole Diameter	12 Millimeters
Mounting Type	Panel Mount
Number of Positions	2
Operating Voltage	12 Volts (DC)
Operation Mode	ON-NONE-OFF
Part Number	R13-401-101
Specification Met	IEC 60529
Switch Type	Metal, Rocker Switch, SPST, Toggle Switch
Terminal	Screw
UPC	016071636291
Unit Count	1 Count
Voltage	12 Volts (DC)

Reviews

C**E

Great switches.

Excellent switches. Very rugged, attractive.

16.05.2026

C**N

Nice Heavy Duty Switch!

Worked as intended and good quality.

2.06.2025

T**Y

Good quality

Nice switch. Works as described

13.11.2025

S**B

Quality made

Heavy duty switches worked great with 6 gauge wire

25.02.2025

M**Y

Product

Good product for the price

14.12.2025

T**M

Just as described

Nice heavy duty switch.

5.12.2025

A**O

Toggle Switch

I got to finish my project. Toggle switch works well.

26.09.2025

W**9

Exactly what I needed.

exactly what I needed for a kill switch on my fuel pump.

11.11.2025

ا**ي

ممتاز

30.07.2022

C**.

Buena calidad

Solidez y resistencia

30.06.2023

J**O

Muy buenos

13.08.2022

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DaierTek Automotive Toggle Switch 50A 12VDC Heavy Duty 12 Volt ON Off Switch 50 Amp SPST 2 Position 2 Pin Metal Chrome Plated Screw Terminals

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