Description
Product Overview
The Keenso SZC23-NO-AL is a high‑performance current sensing switch designed for precise AC current measurement across a wide range of 0.2 A to 30 A. Its adjustable potentiometer allows users to set the trip threshold to match specific application requirements, while the straight‑through structure ensures accurate sensing without introducing additional voltage drop. The device features an isolation withstand voltage of up to 2000 V, providing robust protection against voltage spikes and ensuring safe operation in demanding industrial environments. Constructed from self‑extinguishing ABS material, the housing resists flame propagation and meets stringent safety standards. The switch is self‑powered, eliminating the need for an external power source, and utilizes a high‑power MOS tube for contactless operation, delivering millisecond‑level response times and virtually unlimited opening‑closing cycles. An integrated LED indicator offers immediate visual feedback on the switch status, simplifying troubleshooting and system monitoring.
![[Product front view showing all components]](https://www.buildgoods.store/wp-content/uploads/2026/07/f79ecffa5bf340cabb04d7d169a1fd56.jpg)
Usage
This current sensing switch is ideally suited for a variety of industrial and scientific applications. It excels in motor overload protection, where rapid detection of over‑current conditions can prevent equipment damage and downtime. The device is also valuable in automated control systems, serving as an electronic switch that monitors real‑time current flow to trigger alarms, shut‑down sequences, or load‑balancing actions. Its compact dimensions (2.56 × 1.97 × 0.98 in) and lightweight design (2.12 oz) enable easy mounting on control panels, DIN rails, or within custom enclosures. Engineers and technicians appreciate the ability to fine‑tune the sensing threshold without additional circuitry, making the SZC23‑NO‑AL a versatile component for HVAC systems, conveyor drives, pump stations, and any application where accurate AC current monitoring is critical. The device’s high isolation rating also makes it suitable for environments with strong electromagnetic interference, ensuring reliable performance even in proximity to heavy machinery or high‑voltage equipment.
Why Choose Us
Choosing the Keenso SZC23‑NO‑AL means selecting a product backed by rigorous quality assurance processes and a reputation for durability. Each unit undergoes comprehensive testing for hysteresis, ensuring deviation stays below 1 % and guaranteeing consistent performance over time. The use of flame‑retardant ABS not only enhances safety but also provides resistance to chemical exposure and mechanical impact, extending the product’s service life. Keenso’s engineering team has incorporated a contactless MOS design that eliminates wear‑related failures, delivering virtually infinite switching cycles and reducing maintenance costs. Additionally, the built‑in LED indicator simplifies on‑site diagnostics, allowing quick verification of operational status without specialized equipment. Customers benefit from responsive technical support, detailed documentation, and a clear warranty policy that underscores Keenso’s commitment to long‑term reliability and customer satisfaction.
Key Features
- Adjustable AC current range from 0.2 A to 30 A for flexible application tuning
- High isolation voltage of 2000 V protects against spikes and ensures safety
- Self‑powered, contactless MOS design provides fast millisecond response and unlimited switching cycles
- Durable flame‑retardant ABS housing resists heat, chemicals, and mechanical impact
- Dedicated technical support and comprehensive warranty for peace of mind
FAQ
What is the maximum voltage the switch can safely isolate?
The SZC23‑NO‑AL is rated for an isolation withstand voltage of up to 2000 V, making it suitable for most industrial AC applications where high voltage protection is required.
Can the switch operate without an external power source?
Yes, the device is self‑powered. It draws the necessary energy from the measured AC line, eliminating the need for a separate power supply and simplifying installation.
How does the adjustable threshold work?
The built‑in potentiometer allows users to set the current trip point anywhere within the 0.2 A to 30 A range. Turning the knob changes the sensing coil’s balance, providing precise control over the activation current.
Is the LED indicator optional?
The LED indicator is integrated into the switch housing and cannot be removed, but it can be disabled electrically if visual feedback is not required for a particular installation.
What warranty does Keenso provide for this product?
Keenso offers a standard one‑year limited warranty covering manufacturing defects and performance issues, backed by responsive technical support and replacement services if needed.
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