10 Best
Voltage Protectors
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Product Highlights- When the battery supplies power to the module, the output voltage is always equal to the battery voltage when the relay is closed.
- Voltage protection module has over‑discharge protection and low‑voltage disconnect protection.
- Digital low voltage protector module is suitable for 12‑36v storage battery/lithium battery.
- Three‑digit red led highlight nixie tube, display battery voltage in normal state.
- Accurate display, the switch module turns on and off quickly when approaching the lowest voltage.
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- When the line has over-voltage, under-voltage and overcurrent faults, the product will automatically cut off the line. when the line voltage or current retu to normal, the product will automatically resume normal power after the delay time set by the user. no manual operation is required.
- The line voltage is unstable or the power is suddenly cut off due to some factors, when the power recovers, the product will not connect to the power immediately. this delay time is set by the user according to the local situation.
- The product fully conforms to the singlephase self-reclosing recloser produced by the enterprise standard.
- When the line appears instantaneous or transient over-voltage, the protector does not malfunction.
- The line voltage should not be higher than 300vac to prevents the product itself from being damaged due to excessive voltage.
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Product Highlights
- 2. compatible with -422&8rs-485 standard, can convert single-ended pci-e signal into four -422/-485 signals
- 1. with transient voltage suppression protector
- 3. with fast transient voltage suppression, effectively protect the -422/-485 interface
- 4. suppress- and esd, provide 600w -surge protection power per line
- 5. it can reduce the impedance at both ends at a high speed and absorb a large current, thereby clamping the voltage at both ends to a predetermined value and protecting the subsequent circuit components from being damaged by transient high voltage shocks.
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Product Highlights
- Dual display: digital voltage protector adopts dual display voltage, current, intuitive reading, more convenient to use.
- Delayed power on: overvoltage undervoltage protector can prevent the frequent on off of unstable voltage from causing additional damage to the appliance, and achieve secondary protection. delayed power on function, the power supply automatically recovers after 1‑600s after the voltage is stabilized.
- Pc material and safe: using flame retardant pc, this protector is with overvoltage protection, undervoltage protection and voltage display (voltage measurement), the use of more safe and reliable.
- Restore factory function: our under voltage self reset overvoltage protector has the functions of reset mode selection, fault query and factory recovery.
- Multiple protection: digital voltage protector multiple protection functions provide protection for appliances and manually adjust the overvoltage, undervoltage and overcurrent protection values.
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Product Highlights
- 🥁 the corresponding current size can be customized based on the electric field. if the electricity used in the dormitory is 5a, a 5a current limiting controller can be customized. if it exceeds 5a, the power will be automatically cut off. after the electrical equipment is unplugged, the current will return to within 5a, and it can also be automatically restored.
- 🥁 dual dispaly, clear and convenient to view the current and voltage.
- 🥁 real time protections of household electricity safety.
- 🥁 small size, simple wiring method, and very easy to use.
- 🥁 equipped with a work indicator light, the electrical status is clear.
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Product Highlights
- Adjustable values: can adjust overvoltage and overcurrent protection value, recovery value, protection action time.
- Din rail mount: din rail installation does not require wiring, easy installation, disassembly and maintenance.
- Wide adjustment range: can adjust the fault recovery delay time and the power on delay turn on time, and the adjustment range is wide.
- Multifunctional display: the multifunctional monitoring protector is a digital display, which can display voltage, current and power.
- Reset mode selection: has the functions of resetting mode selection, fault query, restoring factory settings and cycle countdown, etc.
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Product Highlights
- 【reliable overvoltage protection】designed to operate without the need for an additional auxiliary power supply, this overvoltage protector ensures regular functioning even under abnormal voltage conditions. keep your electrical systems protected from overvoltage risks.
- 【easy installation and operation】featuring a 35mm guide rail and standard modular structure, the voltage monitoring relay is effortless to install and operate. its user-friendly design streamlines the setup process, saving you time and effort.
- 【real-time monitoring of voltage】the voltage monitoring relay enables real-time monitoring of dc overvoltage and undervoltage faults. you can adjust the over-voltage and under-voltage values as well as the action time to customize its performance based on your specific needs.
- 【versatile contact configuration】equipped with two sets of normally open and normally closed contacts, the voltage monitoring relay offers flexible functionality. two indicator lights provide clear visibility of various working conditions.
- 【wide range of applications】the motor overvoltage protector is highly versatile and compatible with various systems, including dc motors, batteries, ups power supplies, dc switchgear, dc panels, and industrial control systems. ensure the safety and optimal performance of your equipment.
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Product Highlights
- 💡-automatic reconnect -- turn on the power supply when the circuit voltage and current returns to the normal.
- 💡-double led display -- two seleprate digital led display can display the real voltage, current independently for easier and clearer reading, can be used as a voltmeter and ammeter.
- 💡-voltage¤t protection -- cut off the power when the circuit has over-voltage,under-voltage or over-current. protect your home electrical equipment from being damaged.
- 💡-adjustable -- over voltage value range 230v-300v, under voltage value range 140v-210v, over current value 1-63a. fault recovery delay time adjustable from 1-600 seconds
- 💡-customizable -- the over-voltage, under-voltage and over-current values of this product can all be set up by yourself and can be adjusted on the basis of local practical condition.
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- [with fuse & more safer] for the safety of users, our 12v converter are equipped with fuses. when the voltage is too high, the current exceeds(15a), the circuit breaks down or is abnormal, the fuse will blow and the transformer will stop working, thereby protecting the electrical appliances. in addition, this can reduce the risk of fire or explosion. high conversion rat...
- [widely used and easy to install] this voltage regulator only needs to connect 4 wires to use, slim and small volume is very easy to install. and it is widely used on golf cart, led strip light, bus, car truck vehicle, motor, gps, bus display, taxi advertising screen, car audio, lcd tv, intercom and monitoring system etc.
- [dc voltage regulator] this 12 volt transformer protect your 12v electronics from the voltage unstability or peak surge. low power consumption. voltage input: dc 10-36v, output: dc 12v. max current: 4a 48w. warning: 1.please confirm whether the output voltage is correct before use; 2.please confirm the positive and negative polarity of the power before wiring; 3.must co...
- [ip67 waterproof grade] this 12v dc converter adopted heat conduction organic silica gel filling and sealing technology, waterproof, anti-shock, anti-humidity and dust-proof. which make it can be used outdoors with standing heavy rains or other bad weathers.
- [best after-sales service] our company provide 12 months warranty. if the car voltage stabilizer has any problems, please feel free to contact us for free replacement or 100% money back. we always stand behind the products
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Product Highlights
- Accurate display: cywhrvzsf switch module will turn on or off quickly when it is close to the lowest voltage, cywhrvzsf module has non-volatile storage of settings,it can still be maintained after a power off
- Extend battery life: when the battery voltage reaches the set value, the cywhrvzsf module will automatically disconnect the load to avoid over-discharge of the battery and prolong the battery life. the cywhrvzsf module has a momentary button to set the low voltage disconnection parameters and 3-digit red led display parameters, easy to operate
- Product information: input voltage: dc 12-36v,control accuracy: 0.1v, maximum amperage before breaker trips: 20a,power consumption: less than 1.5w,size: 2.24*1.65*0.75 inch
- Function：cywhrvzsf protection switch module is a programmable battery low voltage disconnect switch module for dc 12-36v lead acid and lithium ion batteries, battery not included
- [satisfactory service]: we provide 24-hour online service,if you encounter any problems, please email seller support (not amazon support), we will give you a perfect solution.
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