--- product_id: 133985529 title: "YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220)" brand: "ywbl-wh" price: "232.55 DT" currency: TND in_stock: true reviews_count: 6 category: "Ywbl Wh" url: https://www.desertcart.tn/products/133985529-ywbl-wh-svr1000-single-phase-voltage-monitoring-sequence-relay-over store_origin: TN region: Tunisia --- # 12–600 V AC & 12–400 V DC universal voltage detection Built-in LCD with real-time voltage & fault display Modular DIN rail mount for tool-free quick installation YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) **Brand:** ywbl-wh **Price:** 232.55 DT **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead of power fluctuations with smart, seamless voltage monitoring! ## Quick Answers - **What is this?** YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) by ywbl-wh - **How much does it cost?** 232.55 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/133985529-ywbl-wh-svr1000-single-phase-voltage-monitoring-sequence-relay-over) ## 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 - • **Real-Time Visual Alerts:** Clear LCD display shows live voltage readings and fault notifications in simplified Chinese, enhancing on-site diagnostics and reducing downtime. - • **Smart Voltage Auto-Detection:** Automatically senses AC/DC voltage from 12 to 600 V, eliminating manual range switching and preventing costly misconfigurations. - • **Trusted Reliability & Safety:** IEC/EN 60947 certified with copper alloy contacts rated for 6 A, ensuring durable performance in demanding industrial environments. - • **Plug & Play Industrial Integration:** Modular rail-mount design fits standard 35 mm DIN rails for seamless, tool-free installation and rapid system upgrades. - • **Robust Over/Under Voltage Protection:** Safeguards sensitive equipment by triggering backup systems like generators when voltage deviates from preset thresholds. ## Overview The YWBL-WH SVR1000 is a single-phase voltage monitoring sequence relay designed for industrial and commercial use. Featuring universal AC/DC voltage auto-detection (12–600 V AC, 12–400 V DC), a modular DIN rail mount for quick installation, and a built-in LCD display with fault alerts in simplified Chinese, it provides reliable over and under voltage protection. Certified to IEC/EN 60947 standards and rated for 6 A contact current, it ensures safe, efficient power management and reduces downtime by automating backup activation during voltage anomalies. ## Description YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220): desertcart.com: Industrial & Scientific Review: Very good product - Using it to monitor electric utility company low or high voltage to my house. If it is out of the ranges I programed into it, it will start my generator. The generator will run until the utility company electric power is back to normal voltage levels. Very easy wiring and setup. Review: Excelente - muy buena inversión puedes controlar la alimentación de la casa y evitar que se quemen los equipos electrónicos ## Features - Modular Design: Rail-mount modular structure enables quick installation in industrial control panels and DIN rail enclosures without custom brackets or tools. Standardized footprint fits common 35 mm DIN rails. Simplifies system integration and field upgrades across automation environments. Reduces wiring complexity and service downtime during deployment. - Universal Voltage Detection: AC/DC voltage auto-detection eliminates manual range switching before testing live circuits. Supports 12–600 V AC and 12–400 V DC input ranges. Prevents misconfiguration errors during maintenance on mixed-power systems. Enhances technician safety and measurement reliability in HVAC, solar, and factory settings. - Comprehensive Display: Built-in LCD shows real-time voltage values, fault alerts, and configuration menus in simplified Chinese characters. Screen resolution supports clear visibility at 12-inch viewing distance. Enables intuitive operation without external devices or translation apps. Improves usability for Chinese-speaking technicians in regional manufacturing sites. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PZD9WSL | | Best Sellers Rank | #87,880 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Phase Monitoring Relays | | Brand | YWBL-WH | | Brand Name | YWBL-WH | | Coil Voltage | 90 volts | | Connector Type | Screw | | Contact Current Rating | 6 A | | Contact Material | Copper Alloy | | Contact Type | Normally Open | | Current Rating | 6 A | | Customer Reviews | 4.5 out of 5 stars 24 Reviews | | Included Components | inc | | Manufacturer | YWBL-WH | | Maximum Switching Current | 6 A | | Minimum Switching Voltage | 1 volts_of_direct_current | | Mounting Type | DIN Rail Mount | | Number of Terminals | 2 | | Operation Mode | Automatic | | Part Number | shgbwqe94u-03 | | Specification Met | IEC/EN 60947 | | UPC | 703633820945 | | Unit Count | 1 Count | ## Product Details - **Connector Type:** Screw - **Contact Material:** Copper Alloy - **Contact Type:** Normally Open - **Current Rating:** 6 Amps - **Mounting Type:** DIN Rail Mount ## Images ![YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) - Image 1](https://m.media-amazon.com/images/I/615CgIcHFQL.jpg) ![YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) - Image 2](https://m.media-amazon.com/images/I/61CrMSQQCeL.jpg) ![YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) - Image 3](https://m.media-amazon.com/images/I/61EOg4eLteL.jpg) ![YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) - Image 4](https://m.media-amazon.com/images/I/61q2nuag2ML.jpg) ![YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over Voltage Under Voltage Protection Relay (AD220) - Image 5](https://m.media-amazon.com/images/I/61axE5kzj-L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: will this work for a car cooler to prevent battery drain and if so can I set the shut off at 13 volts?** A: Short answer is no. Min voltage is 17v so no it would not. However if you took say another 12v battery and wired it in series for 24 v but only use the other battery for emergency's you could use the 24v and set the cutoff at 22v and have the relay open in that instance it would kinda work but you would have to have a contactor for the battery connection because of the amperage of the starter. **Q: Is there a link for the MAnual/directions for Ad48?** A: It comes with a little piece of paper that explains the setup. It is a some device that is configured to activate a form "C" relay based upon a low and high voltage. Example: if the low is set to 48vdc and the high to 50vdc, the relay can be wired to be closed or open between those two voltages. **Q: Are the input and output contacts isolated? i want to bring in my battery voltage (48v dc) and if it gets low cut the 240v ac on the output contacts.** A: Yes the contacts are isolated from the input **Q: Can this is connected to a 120/240 volts power supply?** A: Yes. It can connect to 120v. Dc or Ac ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good product *by D***7 on August 1, 2024* Using it to monitor electric utility company low or high voltage to my house. If it is out of the ranges I programed into it, it will start my generator. The generator will run until the utility company electric power is back to normal voltage levels. Very easy wiring and setup. ### ⭐⭐⭐⭐⭐ Excelente *by Y***Z on May 11, 2023* muy buena inversión puedes controlar la alimentación de la casa y evitar que se quemen los equipos electrónicos ### ⭐⭐⭐⭐⭐ Muy buen dispositivo *by C***G on December 23, 2023* Muy interesante y facil de configurar ## Frequently Bought Together - YWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over-Voltage 50V-300V Under-Voltage 1V-90V AC/DC(AD220) - VAMRONE 10 Piece Aluminum DIN Rails, 12 Inches Long, 35mm Wide, 7.5mm High, Top Hat Slotted DIN Rail with RoHS, Extra Premium Screws Included for Hardware Components Mounting - TWTADE/JQX-62F-2Z Coil Voltage AC 110V 80A DPDT Electronmagnetic Relay,High Power Relay AC 110V --- ## 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.tn/products/133985529-ywbl-wh-svr1000-single-phase-voltage-monitoring-sequence-relay-over](https://www.desertcart.tn/products/133985529-ywbl-wh-svr1000-single-phase-voltage-monitoring-sequence-relay-over) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-30*