--- product_id: 805923523 title: "Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ" brand: "ywbl-wh" price: "32576 Ft" currency: HUF in_stock: true reviews_count: 5 category: "Ywbl Wh" url: https://www.desertcart.hu/products/805923523-normally-open-current-sensing-switch-adjustable-ac-0-2-30a store_origin: HU region: Hungary --- # 0.2-30A AC sensing range LED status indicators Adjustable built-in potentiometer Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ **Brand:** ywbl-wh **Price:** 32576 Ft **Availability:** ✅ In Stock ## Summary > ⚙️ Power up your control game with precision and zero fuss! ## Quick Answers - **What is this?** Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ by ywbl-wh - **How much does it cost?** 32576 Ft with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/805923523-normally-open-current-sensing-switch-adjustable-ac-0-2-30a) ## Best For - ywbl-wh enthusiasts ## Why This Product - Trusted ywbl-wh brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Visual Status Feedback:** Dual LED indicators provide instant, intuitive operational insights. - • **Self-Powered Reliability:** No external power or wiring needed—plug and play with zero hassle. - • **Industrial-Grade Durability:** Robust MOSFET switch endures unlimited cycles and harsh environments. - • **Precision Current Monitoring:** Accurately detects AC currents from 0.2 to 30A for flawless control. - • **Effortless Sensitivity Adjustment:** Built-in potentiometer lets you dial in exact trigger points with ease. ## Overview The SZC23-NO-AL- Normally Open Current Sensing Switch is a self-powered, highly accurate AC current sensor adjustable from 0.2 to 30A. Featuring a built-in potentiometer for easy sensitivity tuning and LED indicators for real-time status, it delivers industrial-grade durability with a high-power MOSFET switch capable of unlimited cycles. Ideal for AC motor overload protection, electronic switch control, and current monitoring without the need for external power or complex wiring. ## Description Specification: Model:SZC23-NO-AL- Power supply:Not required Rated load:≤0.5A@240V AC/DC Input current:0.2-30A AC Switch on minimum:0.5±0.2A Maximum overload:100% Leakage current:≤0.1A Accuracy:1% Hysteresis:≤1% Response time:≤200ms Repeatability:100% Working temperature:-20~60℃ :IP30 Dimensions:65×25×47mm/2.56×0.98×1.85in Hole diameter:10mm /0.4in Package weight:Approx.56g/2.0oz Package list: 1×Current Sensing Switch Review: I used to have a DLP projector, and had a current-loop sensor to bring the screen down via an X10 module when the lamp was on, and back up when the lamp was off (even though the cooldown fan was on). However, upgrading from XGA DLP to 4K LED means that there is no fan, and power consumption is a measly 0.4 amps max. This sensor replaced the old one, and I set the sensitivity so as soon as the LED fires up it closes the normally-open contacts which causes the X10 module to send the command to actuate the electric screen. When it's turned off, the screen comes back up. There were no instructions with it, so the only question I had was "do I turn the pot toward H or L to get the desired sensitivity." Fortunately it has a red LED (closed contacts) and a green LED (open contacts) so I just kept turning it clockwise (toward H) until it went green. Then turning on the projector made it go red, trigger the NO circuit, and voila, screen drops down. It took me longer to open the wrapping and unbox it than it did to set it up and use it. I also managed to drop it from about 4ft (1.2 meters) and it bounced off the tile floor undamaged. Definitely worth it if you have the application/need for it. Ehud Gavron Tucson, Arizona US Review: This product works as advertised. I had 3 different switches for lights on 3 separate circuits. I wanted to turn on a remote light that would illuminate anytime any one of those switches were on so I would know if I had inadvertently left the lights on. Ran all 3 switch legs through this and it works perfectly to do what I needed. ## Features - The AC current sensing switch easily and accurately monitors the action current of 0.2-30A AC. With the built-in potentiometer, the user can easily set the desired action current. - LED indicators provide a convenient visual indication of the switch's operating status, allowing users to easily monitor and troubleshoot any faults. - Unlike other current sensing switches on the market, this switch is self-powered and requires no additional wiring or power supply to ensure - The high power MOS tube non- electronic switch ensures efficient non- switching It can handle countless open and close cycles an unlimited number of times without performance degradation and has a time of milliseconds. - It can withstand harsh industrial environments. It is suitable for a wide range of applications including AC current measurement and monitoring, AC motor overload and electronic switch control systems. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07SFWWPP7 | | ASIN | B07SFWWPP7 | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.2 4.2 out of 5 stars (29) | | Customer reviews | 4.2 4.2 out of 5 stars (29) | | Date First Available | 18 March 2021 | | Date First Available | 18 March 2021 | | Finish | Finish | | Included components | inc | | Installation Method | InstallationMethod | | Item Package Quantity | 1 | | Item Weight | 60 g | | Manufacturer | YWBL-WH | | Manufacturer | YWBL-WH | | Manufacturer reference | YWBL-WH7ya26gwvt9 | | Manufacturer reference | YWBL-WH7ya26gwvt9 | | Material | plastic | | Measurement System | Imperial | | Part number | YWBL-WH7ya26gwvt9 | | Power source type | PowerSource | | Product Dimensions | 6.5 x 5 x 2.5 cm; 60 g | | Product Dimensions | 6.5 x 5 x 2.5 cm; 60 g | | Specification met | ms | | Spout Height | 1 Centimeters | | Switch Style | Limit Switch | ## Images ![Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ - Image 1](https://m.media-amazon.com/images/I/61--Hu3Td-L.jpg) ![Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ - Image 2](https://m.media-amazon.com/images/I/61-P5nHpzvL.jpg) ![Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ - Image 3](https://m.media-amazon.com/images/I/61MHskK1k6L.jpg) ![Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ - Image 4](https://m.media-amazon.com/images/I/61p3+MFGUeL.jpg) ![Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-, JSTXSZ - Image 5](https://m.media-amazon.com/images/I/61cbWQ8ROaL.jpg) ## Questions & Answers **Q: Can this measure a small amount of current @ 480V without damage over time? specifically a transformer with no secondary load. so far it's working.** A: yes **Q: What is the max amp output of this switch?** A: The vender claims .02 to 30 amps A.C **Q: I need unit that senses when Current is off it will close the switch, do i need NC or NO?** A: Hello. If the current is disconnected and the switch is closed then go with NC. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by E***D on 14 September 2022* I used to have a DLP projector, and had a current-loop sensor to bring the screen down via an X10 module when the lamp was on, and back up when the lamp was off (even though the cooldown fan was on). However, upgrading from XGA DLP to 4K LED means that there is no fan, and power consumption is a measly 0.4 amps max. This sensor replaced the old one, and I set the sensitivity so as soon as the LED fires up it closes the normally-open contacts which causes the X10 module to send the command to actuate the electric screen. When it's turned off, the screen comes back up. There were no instructions with it, so the only question I had was "do I turn the pot toward H or L to get the desired sensitivity." Fortunately it has a red LED (closed contacts) and a green LED (open contacts) so I just kept turning it clockwise (toward H) until it went green. Then turning on the projector made it go red, trigger the NO circuit, and voila, screen drops down. It took me longer to open the wrapping and unbox it than it did to set it up and use it. I also managed to drop it from about 4ft (1.2 meters) and it bounced off the tile floor undamaged. Definitely worth it if you have the application/need for it. Ehud Gavron Tucson, Arizona US ### ⭐⭐⭐⭐⭐ Review *by D***E on 9 March 2024* This product works as advertised. I had 3 different switches for lights on 3 separate circuits. I wanted to turn on a remote light that would illuminate anytime any one of those switches were on so I would know if I had inadvertently left the lights on. Ran all 3 switch legs through this and it works perfectly to do what I needed. ### ⭐⭐⭐⭐ Review *by M***T on 20 April 2024* I used this to run an infinity DC 6” diameter air venting motor with silencers to circulate air to different rooms when my MrCool heat/ac pump turns on. To control a higher watts/amp, use a solid state relay in conjuction with this device. Still flawlessly working after 1 year. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hu/products/805923523-normally-open-current-sensing-switch-adjustable-ac-0-2-30a](https://www.desertcart.hu/products/805923523-normally-open-current-sensing-switch-adjustable-ac-0-2-30a) --- *Product available on Desertcart Hungary* *Store origin: HU* *Last updated: 2026-05-26*