Best Current Switches of 2025

The Suncourt Current Switch is designed to activate 120 VAC devices automatically when it detects input current. This feature ensures that your devices operate efficiently without manual intervention, making your life easier. Safety is a priority, as the switch is UL 94-V0 rated, meaning it meets strict flammability standards to protect your home. With compact dimensions of 4 inches in length, width, and height, it can fit into tight spaces easily. Weighing only 1 pound, it is lightweight and straightforward to install, providing convenience without added bulk.

This current switch offers dual function monitoring of current and motor start/stop, with 100% solid-state output and a polarity insensitive output for easier wiring. It also comes with a snap-in mounting bracket for simplified installation and is compact enough to fit in tight enclosures.

H300 Current Switch by Veris is a cost-effective solution for monitoring electrical loads like exhaust fans, pumps, and motors. It is ideal for small exhaust fans and provides easy retrofit installation with its split-core design. The removable mounting bracket offers installation flexibility, saving valuable panel space. With a 5-year limited warranty, this micro-sized switch is reliable for verifying lighting run time and monitoring on/off status of various fixed loads.

The SZC23-NO-AL-CH is an adjustable AC current sensing switch designed for AC current measurement and monitoring, overload protection, and electronic switch control. It features an adjustable current range from 0.2-30A AC, a straight-through design, isolation withstand voltage of 2000V, and high-power MOS tube contactless electronic switch for ms-level response. The LED indicator displays the switch's working status, and it can be used to control various automation industrial equipment. The device's hysteresis is less than 1% and can be used under strong magnetic conditions.

The Dwyer® Miniature Current Switch, MCS-111050, is a self-powered device with a range of 0.5 to 50 A continuous. It has a UL 94V-0 flammability rated ABS enclosure and can operate in temperatures ranging from 32 to 122°F (0 to 50°C) and humidity levels of 10 to 95% (non-condensing). Its response time is quick, making it a reliable choice for current switches.

The AC Current Sensing Switch Flameproof Adjustable 0.2~30A IP30 Self-Powered Sensing Switch(Normally Open) is an advanced switch output detection, monitoring and protection alarm type product designed for safe and convenient current monitoring or detecting of electric equipment. It uses the electromagnetic mutual inductance principle of current, and has high accuracy, stable performance and long service life. It is widely used in various industrial control equipment, frequency control device, inverter device, electrolytic plating, street lamp monitoring, coal mine and other industries.

The Veris H608 Current Switch is a versatile device designed for monitoring and controlling electrical currents. With a frequency range of 50 to 60 Hz, it can effectively handle a wide range of power systems. The temperature range of 5 to 140 degrees F ensures reliable performance in various environments. Equipped with a 1 Amp status output, this current switch provides accurate readings for easy monitoring. Its humidity range of 10 to 90 percent (non-condensing) makes it suitable for both indoor and outdoor applications. Additionally, the Veris H608 Current Switch has LED status lights that indicate the applied voltage. Whether you need to measure current in industrial settings or residential installations, this current switch offers convenience and reliability.

The Terizger Current Sensing Switch is a self-powered device that eliminates the need for an external power supply, making it highly convenient for users. With an adjustable action current range of 0.2A to 30A AC, you can easily tailor the switch to your specific needs. The built-in LED indicator allows you to quickly check the operational status at a glance, enhancing usability. Additionally, this switch boasts a rapid reaction speed measured in milliseconds, ensuring that it can handle frequent openings and closings without any delay, making it ideal for industrial automation and power monitoring applications.

The Loulensy AC Current Switch Transducer is a self-powered device that turns on AC devices when input current is sensed. It has an input range of 0-200A AC with a trigger point of 0-200A AC continuous. The device is UL&CSA, CE&Rohs Listed and has an enclosure rating of UL, 94 V-O flammability rated, ABS plastic housing. Additionally, it has a response time of 250mS or shorter and supports an operating temperature of -30 to +70 degrees Centigrade.

Veris H600 Current Switch is a cost-effective solution for monitoring various fixed electrical loads. You can use it to monitor unit vents, exhaust fans, pumps, and lighting run times. It is more reliable than relays for status verification and ideal for direct-drive units and fan coil units. The removable mounting bracket offers installation flexibility, making it perfect for small exhaust fans. With a solid-state design and a 5-year warranty, the Veris H600 Current Switch ensures reliable performance.