Automatic Over/Under Voltage and Over Load Protection (Adjustable Setting) with Auto Re-Connect LED Display Standard Din-Rail Mounted Single Phase 220V, 63A (13.8kW)

Though a little expensive as compared to similar other brands, the amiciSmart is very well made, easy to install and set up. So far it is working well providing all the features as promised and hopefully it will continue to work for a long time without problems. However the user manual is poorly made. The fonts can be read only with a magnifier. There was a no mention in the manual that the 'set' button has to be pressed for few seconds to enter the set up mode. Fortunately few videos are available on the net which explains the set up mode activation.

as company promise there are useful function and also the youth case is very useful because of they instantly cut out the over voltage or under voltage as compared to board voltage protector protector is very good quality

Very good product, very, very good.And very accurately

Best Quality and I have used it before. You can trust this product blindly

This product is not safe, it is a fire hazard. Had been using it for more than 2 years, until it recently caught fire. Fortunately the main supply got cut off and nothing else caught fire or got damaged as it was installed outside the main box. This likely happened due to heating, especially in this hot and humid summer. After some research, found that this product is made up of ABS plastic (Acrylonitrile Butadiene Styrene) - this is also mentioned by the seller on the product page. What's not mentioned is that ABS is a highly flammable material which is not suitable for such a device that gets directly connected to main connection line and is supposed to take the load of an entire house. The quality of material used raises serious questions on whether this product even meets the regulatory standards. I cannot recommend this device until the plastic material is changed and replaced with something that's an industry standard for devices like MCBs.

(Improved and edited by me): A sudden glitch (as lose connection in mains or otherwise) in mains does not resets the device. Thus, computer etc. will not restart for a glitch. I checked this by quickly disconnecting and re-connecting an input wire. About half a second of no power is ignored by this device. On the device, in normal mode, the upper LED display shows present voltage and lower LED Display shows present current. LED1 (top most) (Red): Over Voltage cut indicator LED2 (2nd): Under Voltage cut indicator LED3 (3rd) (Red): Over current cut indicator LED4 (bottom most) (Green): Power [Output is On, Turns off when output is off due to a condition.] Button1 (Left most): Power Button2 (2nd): Set Button3 (3rd): Up key Button4 (Right most): Down key Press and hold Settings button for about 2s to enter Settings mode. Setting A1 is displayed. Press again to switch up to next setting A2 and so on till "End" is shown. Finally press again to exit Settings mode. Settings mode will automatically exit to normal mode if a key is not pressed for about 20 seconds, saving the changes. 1. Change the setting value by pressing Up Down keys. 2. Press Down key (in normal mode, not settings mode) for more than 12 seconds to restore the factory settings. After applying factory setting, the device restarts with set power up delay. 3. Press Up key (in normal mode, not settings mode) for more than 6 seconds to query the latest fault. ---- Begin Table 2---- Setting Code; Setting Name; Range; Default; My Setting; Comment A1; Power on Delay time S; 1 to 500; 10; 10; PuP is displayed on upper LED panel. If a cut condition (over voltage/ under voltage) is detected by the device after power resumes, it is shown after about 1s of PuP, even if PuP delay setting is 10s. Power output remains off then. This is good feature. Relay switching sound of contact is not heard when mains is supplied during the PuP time, this means that the relay contact is normally open which is good feature as in case of very high voltage the device may burn but relay will not switch on and home items shall be kept protected from very large voltage (except lightening voltage). A2; Over-voltage protection value V; 230 to 300; 270; 260; Pressing Up key after 300 shows oFF. Probably, this means overvoltage cut will not be done for oFF setting. A3; Over-voltage recovery value V; 225 to 295; 250; 255; A4; Over-voltage recovery delay time S; 1 to 500; 30; 30 A5; Over-voltage protection action time S; 0.1 to 30; 0.5; 0.1; A6; Under-voltage protection value V; 140 to 210; 170; 150; Pressing Down key after 140 shows oFF. Probably, this means undervoltage cut will not be done for oFF setting. A7; Under-voltage recovery value V; 145 to 215; 190; 160; A8; Under-voltage recovery delay time S; 1 to 500; 30; 30; A9; Under-voltage protection action time S; 230 to 300; 0.5; 0.5 A10; Over-current protection value A; 1 to 63; 40.0; 40.0; After recovery delay time, the output is switched on but if still overcurrent occurs then after the reaction time, the output is cut again. So home appliances will continue to switch on off. Hence use A12 setting to limit the number of cuts before permanent output cut off. A11; Over-current recovery delay time S; 1 to 500; 30; 30; A12; Over-current protection action time S; 0.1 to 500; 0.5; 0.5; A13; Voltage Calibration; ; 0.0; 0.0; A14; Continuous over current faults times; 1 to 20; oFF; 4; After set number of times, the output is cut permanently and lower LCD panel shows oFF. Power button then can be used to resume output. A15; Current calibration; ; 0.0; 0.0; End; End setting; ; ; ; press SET button to exit from settings. ---- End Table 2---- Device can protect from over current but not from short circuit in home. MCB is required for short circuit protection. To be tested later: 1. If power button is pressed to cut off output and mains power cut happens, What will be the output condition when mains power resumes. 2. After number of times of over current cut out, what will happen if mains power cut occurs and mains resumes. Sunny Saini Jul 4, 2023 8:00:13 PM Jul 5, 2023 9:35:26 AM ++++

The protection device offers over-voltage, under-voltage, and overload protection with adjustable settings and automatic reconnection. Likes: Easy DIN-rail installation, adjustable protection settings, LED display, and automatic reconnect feature after voltage normalization. Dislikes: Not effective against lightning strikes or high energy surge events. Additional surge protection devices are still required for comprehensive protection. The long-term durability is uncertain, and it is difficult to judge how long the device will last. Overall, a useful device for voltage and overload protection, but it should not be relied upon as protection against lightning induced surges.

Useful product bud average build quality. Made in China