--- product_id: 56695258 title: "ELPRO ATS-125A, 230/380V 50-60Hz Automatic Transfer Changeover Switch, 1-3 Phase, 4P" brand: "4pro" price: "586.90 DT" currency: TND in_stock: false url: https://www.desertcart.tn/products/56695258-elpro-ats-125a-230-380v-50-60hz-automatic-transfer-changeover store_origin: TN region: Tunisia --- # 1-3 Phase Monitoring True RMS Accuracy External Voltage Adjustment ELPRO ATS-125A, 230/380V 50-60Hz Automatic Transfer Changeover Switch, 1-3 Phase, 4P **Brand:** 4pro **Price:** 586.90 DT **Availability:** ❌ Out of Stock ## Summary > πŸ”Œ Power Up Your Reliability! ## Quick Answers - **What is this?** ELPRO ATS-125A, 230/380V 50-60Hz Automatic Transfer Changeover Switch, 1-3 Phase, 4P by 4pro - **How much does it cost?** 586.90 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/56695258-elpro-ats-125a-230-380v-50-60hz-automatic-transfer-changeover) ## Best For - 4pro enthusiasts ## Why This Product - Trusted 4pro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Precision Monitoring:** True RMS measurements ensure accurate voltage readings. - β€’ **User-Friendly Design:** Front panel mounting for easy access and visibility. - β€’ **Built-in Safety Alarms:** Stay informed with integrated alarms and warnings for generator protection. - β€’ **Versatile Compatibility:** Designed for 230/380V systems, perfect for diverse applications. - β€’ **Seamless Power Transition:** Experience uninterrupted power with our automatic transfer switch. ## Overview The ELPRO ATS-125A is a robust automatic transfer changeover switch designed for 1-3 phase systems, offering precision monitoring of AC mains voltages with true RMS measurements. It features an external voltage adjustment capability and built-in alarms for generator protection, ensuring seamless power transitions and enhanced safety. ## Description DESCRIPTION The ATS-125A changeover switch is designed to automatically transfer load circuits from main power source to reserve source in a wide variety of 1-3 phase applications. FEATURES ο‚Ÿ Solenoid activated fast switching; ο‚Ÿ 1-3 phase 4 pole operation; ο‚Ÿ High reliability due to stable positions of the change-over mechanism energized during switching process only; ο‚Ÿ Front side position indication pointer and external lamp outputs; ο‚Ÿ Built-in mechanical and electrical interlocking; ο‚Ÿ Simple connection without external jumpers. TECHNICAL SPECIFICATIONS ο‚Ÿ Voltage: 230/400V(2-3 phase), 230V (1 phase), 120/208V(3 phase), 120/240V (2 phase). ο‚Ÿ Voltage frequency: 50/60Hz. ο‚Ÿ Switching poles: 4 ο‚Ÿ Phase current: up to 125А ο‚Ÿ Working temperature range: ΠΎΡ‚ -5'C Π΄ΠΎ +40'C ο‚Ÿ Humidity: up to 50% ο‚Ÿ Installation type: vertical ο‚Ÿ Switching current: up to 3.5A ο‚Ÿ Switching time: 200 ms ο‚Ÿ Weight: 4.2 kg INPUTS AND OUTPUTS ο‚Ÿ Normal source inputs: R, S, T, N; ο‚Ÿ Reserve source inputs: R, S, T, N; ο‚Ÿ Load cirquit outputs: R, S, T, N; ο‚Ÿ External indication lamp outputs. OPERATION Device monitors normal and reserve source phase voltages (internally connected to T and N terminal pairs). In case if there is the normal source phase voltage, the device connects the load circuits to the normal power source inputs. If the normal source phase voltage is lost, the device comes to a waiting mode keeping the load circuits connected to the normal power source inputs. In case if there is the reserve source phase voltage (while normal source phase voltage is absent), the device connects the load circuits to the reserve power source inputs. If the reserve phase voltage is lost, the device comes to a waiting mode keeping the load circuits connected to the reserve power source inputs. ## Features - Front panel mounted low cost precision instrument - Monitors the 1-3 phase AC mains voltages - True RMS measurements - Provides external voltage adjustment feature - Generator protection, built-in alarms and warnings ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | ELPRO | | Part number | B019Y3A4KY | | Item Weight | 4.31 kg | | Item Weight | 4.31 Kilograms | | Manufacturer reference | B019Y3A4KY | | Item Package Quantity | 1 | | Plug profile | Panel Mount | | Batteries included? | No | | Batteries Required? | No | ## Product Details - **Operation Mode:** Automatic - **Current Rating:** 125 Amps - **Operating Voltage:** 240 Volts - **Brand:** Elpro - **Actuator Type:** Rotary - **International Protection Rating:** IP54 - **Connectivity Protocol:** X-10 - **Unit Count:** 1.0 Count - **Manufacturer:** Elpro ## Images ![ELPRO ATS-125A, 230/380V 50-60Hz Automatic Transfer Changeover Switch, 1-3 Phase, 4P - Image 1](https://m.media-amazon.com/images/I/71lPLEgugCL.jpg) ![ELPRO ATS-125A, 230/380V 50-60Hz Automatic Transfer Changeover Switch, 1-3 Phase, 4P - Image 2](https://m.media-amazon.com/images/I/81dHY9Gz2HL.jpg) ![ELPRO ATS-125A, 230/380V 50-60Hz Automatic Transfer Changeover Switch, 1-3 Phase, 4P - Image 3](https://m.media-amazon.com/images/I/81T68cbf83L.jpg) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/56695258-elpro-ats-125a-230-380v-50-60hz-automatic-transfer-changeover](https://www.desertcart.tn/products/56695258-elpro-ats-125a-230-380v-50-60hz-automatic-transfer-changeover) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-31*