Best Aluminum Current Switches in 2026

N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.

Self-powered, no external power supply required

Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%

Turns 120 VAC devices on when input current is sensed

UL 94-V0 rated for flammability safety

Item Package Dimension: 4.0" L x 4.0" W x 4.0" H

Range: 0.5 to 50 A continuous.

Power Requirements: None, self-powered

Temperature Limits: 32 to 122°F (0 to 50°C); Humidity Limits: 10 to 95% (non-condensing)

Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.

LED indicator can conveniently and intuitively indicate the working status of the switch.Hysteresis is less than 1% and can be used under strong magnetic conditions.

The switch has no limit on the number of opening and closing, and the speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.

SELF-POWERED: Self-powered, no external power supply required.

CONTACTLESS ELECTRONIC SWITCH: High-power MOS tube contactless electronic switch.

STRUCTURE DESIGN: Straight-through structure design, isolation withstand voltage up to 2000V.

Package Dimensions: 10.31" (L) x 4.92" (W) x 1.72" (H)

Product Type: Electronic Component

Package Quantity: 1

Easy To Use: Current sensing switch is self-powered, requires no external power supply, operates at 0.2-30A AC, and can be adjusted with a potentiometer.

Convenient And Intuitive: The switch does not limit the number of opening and closing, the speed reaches ms level, and the LED indicator can indicate the working state of the switch.

Accurate And Timely: Current switch is a straight-through structure design with isolation withstand voltages up to 2000V and hysteresis of less than 1%. It can be used under strong magnetic conditions.

【Function】: The current sensing switch is used to monitor the AC current. It uses the principle of mutual inductance to sense the AC passing current and isolate the AC current. I believe it can bring convenience to your life.

【Feature】:Adjustable current detection does not require other power sources, the switch can be opened and closed infinitely, and the response speed is fast, and the LED indicator light can easily and intuitively indicate the working status of the switch.

【Automatic 】:The automatic industrial accessories are suitable for AC current measurement and monitoring, automatic control system switches, etc., with stable performance and strong practicability.

Turns on AC or DC devices when input current is sensed

Frequency:40-400Hz

Enclosure Rating:UL,94 V-O flammability rated,ABS plastic housing

Adds concealed deadbolt security to most wood or hollow metal doors, with the convenience of electrical operation

Incorporates manual lock/unlock cylinder to operate the SD-997A-GBQ if power is lost (turn lock knob from inside protected premises and/or use key from outside protected premises)

Attempts to relock multiple times if the door is not closed properly to prevent the solenoid from burning out. Once the door is closed properly it will automatically lock

Turns on AC devices when input current is sensed

Frequency:40-400Hz

Enclosure Rating:UL,94 V-O flammability rated,ABS plastic housing

Dual function — monitors current and motor start and stop

100% solid-state output — has no moving parts to fail

Polarity insensitive output — provides easier wiring

Using the electromagnetic mutual inductance principle of current, the advanced switch output detection, monitoring and protection alarm type products without power supply technology are adopted.

Controlling of various automatic industrial control equipment, flash, buzzer, relay, single chip, or other power load equipment.

The current sensing switch is for safe, convenient monitoring or detecting the current of electric equipment. An ideal choice for automatic industrial control equipment and electric power monitoring.

Universal Outputs: Input through current: 0.2-30A AC Rated load: 0.3A@240V AC/DC.

Accurate & Dependable: Offers a sensing range of 0.2 to 30 amps and universal, solid-state outputs; Accuracy: 1%

Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms

Range: 1.5-150 A