--- product_id: 129793815 title: "Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-" brand: "walfront" price: "₹ 3147" currency: INR in_stock: true reviews_count: 12 category: "Walfront" url: https://www.desertcart.in/products/129793815-current-sensing-switch-normally-open-current-sensing-switch-adjustable-ac store_origin: IN region: India --- # 0.2-30A adjustable AC current range LED status indicator for instant feedback Self-powered, no external supply needed Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- **Brand:** walfront **Price:** ₹ 3147 **Availability:** ✅ In Stock ## Summary > ⚡ Stay in the know, control with precision — power sensing redefined! ## Quick Answers - **What is this?** Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- by walfront - **How much does it cost?** ₹ 3147 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/129793815-current-sensing-switch-normally-open-current-sensing-switch-adjustable-ac) ## Best For - walfront enthusiasts ## Why This Product - Trusted walfront brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Setup:** Self-powered design eliminates external wiring hassle - • **Robust & Reliable:** Self-extinguishing ABS casing with 2000V isolation withstand - • **Instant Status Insight:** Built-in LED indicator keeps you informed at a glance - • **Lightning-Fast Switching:** Millisecond-level response with unlimited cycles - • **Precision Current Sensing:** Adjustable 0.2-30A range for tailored control ## Overview The SZC23-NO-AL Current Sensing Switch offers adjustable AC current detection from 0.2 to 30 amps without needing an external power source. Featuring a clear LED indicator and ultra-fast switching speed, it’s housed in durable, self-extinguishing ABS with 2000V isolation, making it ideal for AC motor overload protection, automatic control systems, and precise current monitoring. ## Description Eujgoov Enrich You Life The product categories currently sold by Eujgoov are industrial, hardware, instrumentation, craft collection, musical instruments, mother and baby. Each category develops products that we have tried ourselves, are of the right quality and we love ourselves. The product categories currently sold by Eujgoov are industrial, hardware, instrumentation, craft collection, musical instruments, mother and baby. Each category develops products that we have tried ourselves, are of the right quality and we love ourselves. Eujgoov Enrich You Life Visit the Store Eujgoov Enrich You Life Visit the Store How did we start? We are a group of young dreamers who want to change the world, and Eujgoov wants to make the products he loves available to as many people as possible Why do we love what we do? All products have been tried out by our own small team, and the product categories we have developed are so interesting that we are always doing what we love and the enthusiasm will not diminish Are our goods of high quality? At present, there will be many factories looking for us, wanting us to sell their products, and we will develop such products only after we have tried to meet the quality standards How did we start? We are a group of young dreamers who want to change the world, and Eujgoov wants to make the products he loves available to as many people as possible Why do we love what we do? All products have been tried out by our own small team, and the product categories we have developed are so interesting that we are always doing what we love and the enthusiasm will not diminish Are our goods of high quality? At present, there will be many factories looking for us, wanting us to sell their products, and we will develop such products only after we have tried to meet the quality standards Instrumentation is not only found in laboratories, but often accurate instrumentation can also guide our lives well and make our living environment more comfortable Putting life in your hands Visit the Store Putting life in your hands Review: works well - I installed a 2000 watt inverter to supply AC to the absorption refrigerator in my class C motorhome. that way I could make sure it was cold without having to run it on propane while I am driving. I ran the hot lead for the AC through the hole in this current sensor and hooked up a led light to it's contacts and now I have an indication of when my refrigerator is actually running. I guess I don't need to know that, but I like to keep track of what's going on in my motorhome. So far it's been very reliable and was simple to set up. Review: Works as advertized - I used this switch to turn a lamp on/off that was installed at the bottom of a staircase and powered on a separate circuit from the light at the top of the stairs. The switch operated by sensing the current in a traveler on a two-way switch at the bottom of the stairs (no neutral available there) and triggered a relay to handle the current needed for the lamp. The modified circuit works with approximately a one-second delay, which does not impact the ability to fully light the stairway for use. ## Features - 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. - High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V. - Suitable for AC current measurement and monitoring, AC motor overload , electronic switch of automatic control system and so on. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07P87TG8F | | Best Sellers Rank | #334,454 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Current Monitoring Relays | | Brand | Walfront | | Brand Name | Walfront | | Circuit Type | 1-way | | Connectivity Protocol | X-10 | | Connector Type | Screw Terminals | | Contact Material | Plastic | | Contact Type | Normally Closed, Normally Open | | Control Method | Touch | | Current Rating | 30 Amps | | Customer Reviews | 4.4 out of 5 stars 69 Reviews | | International Protection Rating | IP30 | | Item Dimensions | 2.56 x 1.97 x 0.98 inches | | Item Weight | 0.06 Kilograms | | Manufacturer | Walfront | | Material Type | Plastic | | Mounting Type | Through Hole Mount | | Number of Items | 1 | | Number of Positions | 2 | | Operating Voltage | 240 Volts | | Operation Mode | Automatic | | Part Number | Walfront8y7cbug59d | | Specification Met | Ms | | Switch Type | Limit Switch, Temperature Switch | | Terminal | Screw | | UPC | 724942218735 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 60 Degrees Celsius | | Wattage | 120 watts | ## Product Details - **Brand:** Walfront - **Connector Type:** Screw Terminals - **Contact Type:** Normally Closed, Normally Open - **Current Rating:** 30 Amps - **Item dimensions L x W x H:** 2.56 x 1.97 x 0.98 inches - **Material:** Plastic - **Operating Voltage:** 240 Volts - **Operation Mode:** Automatic - **Switch Type:** Limit Switch, Temperature Switch - **Terminal:** Screw ## Images ![Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- - Image 1](https://m.media-amazon.com/images/I/61aIiHukVhL.jpg) ![Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- - Image 2](https://m.media-amazon.com/images/I/51qh09CGaTL.jpg) ![Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- - Image 3](https://m.media-amazon.com/images/I/61+T791YmSL.jpg) ![Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- - Image 4](https://m.media-amazon.com/images/I/51T3vHGqeXL.jpg) ![Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL- - Image 5](https://m.media-amazon.com/images/I/61HCgpkd61L.jpg) ## Questions & Answers **Q: Can this be used to shut off a 12 volt DC linear actuator if it gets jammed?** A: No. A CT cannot be used to measure DC amps. **Q: Will this work with 24v on the switch leg with 120v 10 amp motor in the CT?** A: Your question doesn't include the main ingredient. As far as I know, it's the current through the switch that will cause failure. I avoided the problem by using a relay to handle the load. I hope this helps. **Q: Can i switch a 20 watt ac (led or cfl) on/off using the"k1,k2" contacts? it works, but for how long- design for it? k1,k2= solid state relay/mosfet.** A: The k1, k2 contacts aren't rated for much of a load. To be on the safe side, I used the contacts to power a small relay and let the relay handle the load. **Q: I concerned about the switch toggling off-on-off repeating. does this unit have a switch on/off delay, I'd like about 5 minutes of delay** A: It doesn't have a lockout or a time delay, it's on or off. I haven't had a problem with it kicking on and off. The application I'm using it for is a pump on a sand filter reading that amps to know if and when it looses its prime, to turn a light on to get people's attention. ## Customer Reviews ### ⭐⭐⭐⭐⭐ works well *by G***S on October 21, 2025* I installed a 2000 watt inverter to supply AC to the absorption refrigerator in my class C motorhome. that way I could make sure it was cold without having to run it on propane while I am driving. I ran the hot lead for the AC through the hole in this current sensor and hooked up a led light to it's contacts and now I have an indication of when my refrigerator is actually running. I guess I don't need to know that, but I like to keep track of what's going on in my motorhome. So far it's been very reliable and was simple to set up. ### ⭐⭐⭐⭐⭐ Works as advertized *by J***E on September 15, 2023* I used this switch to turn a lamp on/off that was installed at the bottom of a staircase and powered on a separate circuit from the light at the top of the stairs. The switch operated by sensing the current in a traveler on a two-way switch at the bottom of the stairs (no neutral available there) and triggered a relay to handle the current needed for the lamp. The modified circuit works with approximately a one-second delay, which does not impact the ability to fully light the stairway for use. ### ⭐⭐⭐⭐⭐ Works *by J***. on January 19, 2025* This is my 3rd one. Using in a residential 24VDC PLC application. Solid so far ## Frequently Bought Together - Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH - Tnisesm 2PCS Power Relay AC120V Coil, 30A SPDT(1NO 1NC) 120 VAC with Flange Mounting and 10 Quick Connect Terminals Wires Mini Relay NT90-AC120V-10X - Current Sensing Switch, Normally Open Current Sensing Relay Adjustable AC 0.2A -30A (SZC23 No AL-CH Model) --- ## 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.in/products/129793815-current-sensing-switch-normally-open-current-sensing-switch-adjustable-ac](https://www.desertcart.in/products/129793815-current-sensing-switch-normally-open-current-sensing-switch-adjustable-ac) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-05-18*