KUAIQU DC Bench Power Supply 30V 20A 600W with USB RS232 RS485 Communication, R-SPS3020S for Industrial Automation Testing
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KUAIQU DC Bench Power Supply 30V 20A 600W with USB RS232 RS485 Communication, R-SPS3020S for Industrial Automation Testing

$299.99
$299.99
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InputVoltage: AC220V(±10%)
Model: R-SPS3020S-R
Total: $299.99
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KUAIQU DC Bench Power Supply 30V 20A 600W with USB RS232 RS485 Communication, R-SPS3020S for Industrial Automation Testing

KUAIQU DC Bench Power Supply 30V 20A 600W with USB RS232 RS485 Communication, R-SPS3020S for Industrial Automation Testing

$299.99

KUAIQU DC Bench Power Supply 30V 20A 600W with USB RS232 RS485 Communication, R-SPS3020S for Industrial Automation Testing

$299.99
InputVoltage: AC220V(±10%)
Model: R-SPS3020S-R

Download English Manual (PDF)

Click the link above to get the full user guide for this product.

KUAIQU DC Bench Power Supply 30V 20A

600W with USB RS232 RS485

Communication, R-SPS3020S for 

Industrial Automation Testing

The KUAIQU R-SPS3020S is a 30V 20A 600W DC Bench Power Supply designed for Industrial Automation Testing, control equipment development, industrial electronic module evaluation, and bench-level power testing. With an adjustable 0–30V output and up to 20A current capability, it provides a flexible DC power source for industrial automation devices and test circuits operating within the rated range.

For industrial automation testing, stable and repeatable power conditions are important when evaluating electronic modules, control circuits, sensors, interface boards, and other DC-powered equipment. The R-SPS3020S combines adjustable voltage and current control with a four-digit display, precision encoder adjustment, OCP and OVP protection, output ON/OFF control, memory presets, and panel locking. USB and optional RS232/RS485 communication interfaces also provide connection options for compatible test and control environments.

Key Features

30V 20A 600W DC Bench Power Supply

The R-SPS3020S provides a 0–30V adjustable output, up to 20A current, and 600W maximum power, making it suitable for a broad range of industrial automation testing tasks. The adjustable output allows users to establish different DC supply conditions when testing automation equipment, electronic modules, control circuits, and related devices within the rated operating range.

Adjustable Voltage and Current for Industrial Automation Testing

Independent voltage and current adjustment helps users establish appropriate power conditions for different industrial automation test setups. This is useful when evaluating control boards, electronic modules, interface circuits, and DC-powered equipment that require different operating voltage or current limits.

Four-Digit Display for Voltage, Current, and Power Monitoring

The four-digit display provides clear readback of voltage, current, and power, allowing users to monitor the power supply condition during testing. This makes it easier to observe changes in the connected load and verify that the test setup remains within the intended operating range.

Precision Encoder Adjustment

The precision rotary encoder provides convenient adjustment of voltage and current settings. This is useful when industrial automation testing requires controlled changes to the DC input condition or repeated adjustment during equipment development and evaluation.

OCP and OVP Protection

Built-in Over Current Protection (OCP) and Over Voltage Protection (OVP) help protect the power supply and connected test equipment when abnormal current or voltage conditions occur. These protection functions are useful for bench testing industrial electronic equipment where controlled power conditions are required.

Output ON/OFF Control

The independent Output ON/OFF function allows users to control DC output without repeatedly disconnecting the test wiring. This provides a convenient way to start or stop power delivery during industrial automation testing, equipment evaluation, and circuit development.

M1-M3 Memory for Repeated Test Conditions

The R-SPS3020S provides three memory groups, M1-M3, for storing commonly used power supply settings. For repeated industrial automation tests, saved settings can help reduce repeated manual adjustment and make recurring bench test procedures more convenient.

Panel Lock for Stable Test Parameters

The panel lock function helps prevent unintended changes to voltage and current settings during testing. This is useful when an industrial automation test requires a consistent power condition to be maintained while the connected device or circuit is being evaluated.

Front and Rear Output Connections

The R-SPS3020S provides front and rear output ports, giving users flexibility when arranging different industrial automation test setups. The front output is convenient for bench work and quick connections, while the rear output can be used when a cleaner or more permanent test wiring arrangement is preferred.

USB RS232 RS485 Communication Interfaces

The power supply supports a USB interface, with RS232 and RS485 available as optional communication interfaces. These interfaces provide connection options for compatible industrial automation testing environments and equipment setups where communication with the power supply is required.

Applications

Industrial Automation Testing

The R-SPS3020S can provide adjustable DC power for testing industrial automation equipment and electronic systems within its 30V, 20A, and 600W rated range. Users can adjust voltage and current according to the requirements of the device or test circuit.

Industrial Control Equipment Testing

The adjustable DC output can be used as a bench power source when evaluating DC-powered industrial control equipment and related electronic assemblies. Voltage and current can be adjusted to establish suitable test conditions.

Automation Control Circuit Testing

The power supply is suitable for bench testing automation control circuits that require an adjustable DC input. The display provides voltage, current, and power readback during the test process.

Industrial Electronic Module Testing

The R-SPS3020S can supply adjustable DC power for industrial electronic modules and development boards operating within the rated output range. OCP and OVP provide additional protection during module evaluation.

Industrial Sensor Test Circuits

For compatible DC-powered sensor test circuits, the adjustable output can provide different supply conditions during development and evaluation. The voltage and current readback helps users monitor the actual power condition during testing.

Automation Interface Board Testing

The R-SPS3020S can be used as a DC power source for interface boards and related electronic circuits used in industrial automation development. Its adjustable output and precision encoder support convenient changes to test conditions.

Industrial PCB and Circuit Testing

The 30V 20A 600W output capability provides a flexible bench power source for industrial PCB and circuit testing within the rated range. The four-digit display allows users to observe voltage, current, and power during operation.

Repeated Automation Equipment Testing

The M1-M3 memory function can store three groups of commonly used settings, making the R-SPS3020S convenient for repeated industrial automation test conditions where the same power parameters are used regularly.

Industrial Automation Development and Evaluation

During equipment development, engineers can use the adjustable DC bench power supply to establish different input conditions for electronic modules, control circuits, and other compatible DC-powered components.

Laboratory Industrial Electronics Testing

The R-SPS3020S can serve as an adjustable DC bench power supply for laboratory testing, development, troubleshooting, and evaluation of industrial electronic circuits and automation-related equipment within its rated specifications.

Quality Check and Terms of Service:

  • Package includes: DC Power Supply *1, Output Power Cord *1, Input Power Cord *1, User Manual *1, Warranty Card *1.

  • Has passed CE & FCC Certification.

  • All DC power supplies and accessories are inspected before shipment to ensure good quality.

  • Customer support: Contact us with any questions, and we'll respond within 24 hours.

Technical Specifications

Parameter Specification
Model R-SPS3020S
Product Type DC Bench Power Supply
Output Voltage 0–30V
Output Current 0–20A
Rated Power 600W
Load Regulation Voltage ≤0.1% + 10mV
Load Regulation Current ≤0.1% + 2.5mA
Line Regulation Voltage ≤0.01% + 2.5mV
Line Regulation Current ≤0.1% + 2.5mA
Setting Resolution Voltage 10mV
Setting Resolution Current 10mA
Readback Resolution Voltage 10mV
Readback Resolution Current 10mA
Setting Accuracy Voltage ≤0.05% + 10mV
Setting Accuracy Current ≤0.01% + 10mA
Readback Accuracy Voltage ≤0.05% + 10mV
Readback Accuracy Current ≤0.01% + 10mA
Voltage Ripple ≤200mVp-p / ≤20mVrms
Current Ripple ≤20mArms
Ripple Test Frequency 20Hz–20MHz
Rise Time, No Load ≤150ms
Rise Time, Full Load ≤200ms
Fall Time, No Load ≤15s
Fall Time, Full Load ≤50ms
Dynamic Response ≤20ms
Efficiency ≥85%
Display Four-Digit Voltage, Current, and Power Display
Protection OCP, OVP
Output Control Output ON/OFF
Memory M1-M3, 3 Groups
Adjustment Precision Encoder
Panel Lock Yes
Communication USB, RS232/RS485 Optional
Output Ports Front and Rear
Front Panel Current <5A
Rear Panel Full Power Output
Operating Temperature 0°C–40°C
Dimensions Approx. 26.5 × 19 × 8.5 cm
Net Weight Approx. 2.5 kg
Package Size Approx. 38 × 24.5 × 12.5 cm
Package Weight Approx. 3.2 kg
Carton Quantity 6 pcs/carton

Why Choose KUAIQU R-SPS3020S?

The KUAIQU R-SPS3020S combines a 30V 20A 600W DC Bench Power Supply with practical control and monitoring functions for industrial automation testing. Its adjustable voltage and current output provides flexibility for different DC-powered test conditions, while the four-digit display makes voltage, current, and power easy to monitor during operation.

For repeated testing, the M1-M3 memory function and panel lock help maintain consistent settings. OCP and OVP provide protection during bench testing, while Output ON/OFF control makes test operation more convenient. The front and rear output connections also allow the power supply to adapt to different bench layouts.

With USB, RS232, and RS485 communication options, the R-SPS3020S also provides flexible connectivity for compatible industrial automation testing environments. Combined with its precision encoder, adjustable 0–30V output, up to 20A current capability, and 600W power rating, it is designed as a versatile DC Bench Power Supply for industrial automation development, testing, and electronic equipment evaluation within its rated specifications.

Warranty

30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from kuaiquinstrument.com), lifetime technique support by KUAIQU.

Please feel free to reach us with any concerns:

Email: kuaiquinstrument@163.com

We strive to reply to you within 24 hours.

Shenzhen Kuaiqu Electronic Co., Ltd. was founded in 2014 and is located in Shenzhen City, Guangdong Province. It is a scientific and technological enterprise integrating,production and sales. Specializing in the production of DC stabilized power supply, variable frequency power supply, switching power supply, program-controlled power supply and other 100 kinds of measuring teaching instruments and industrial special equipment.

We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.

At KUAIQU, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from kuaiquinstrument.com. This policy aims to give you confidence and peace of mind when shopping with us.

What is the 30-Day Price Guarantee?

Our 30-day price guarantee means that if you purchase a product from kuaiquinstrument.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based on USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)

How Does the Price Guarantee Apply?

  • Eligibility: The price guarantee applies only to purchases made on kuaiquinstrument.com. Products purchased from other retailers or third-party sellers are not eligible.
  • Timeframe: The price drop must occur within 30 days of your original purchase date.
  • Product Match: The price guarantee applies to the same product (identical model, specifications, and condition).

How to Apply for a Price Difference Refund

If you notice that the price of a product you purchased from kuaiquinstrument.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:

  • Documentation: Prepare your order number and proof of the price drop (such as a screenshot and link to the product page showing the reduced price).
  • Contact Us: Reach out to our customer support team at kuaiquinstrument@163.com. Include your order number, proof of the price drop, and a brief explanation of your request.
  • Verification: Our team will verify the price drop and your purchase details.
  • Refund Process: Once verified, we will process the refund for the price difference to your original method of payment. It typically takes 1-3 business days for you to receive the refund.

At KUAIQU, we strive to provide our customers with high-quality products and exceptional customer service. Our 30-day price guarantee is just one of the ways we ensure you get the best value for your investment. Shop confidently with KUAIQU, knowing that you are always getting the best deal available.

Thank you for choosing KUAIQU. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at kuaiquinstrument@163.com.

FAQs

Still confused about our DC regulated power supplies after checking the FAQs? Please contact our customer service, we are ready to solve all your problems.

Use overlay text to give your customers insight into your brand. Select image and text that relates to your style and story.

Our customer service can walk you through all settings. You can also watch full operation tutorials on our YouTube channel, including OVP, OCP, memory storage function and other operation guides. Our official blog also has lots of technical articles for reference.

Partial KUAIQU power supplies support program control with USB, RS232, RS485 interfaces, based on Modbus protocol. Remote control can be realized via our self-developed PC software. If you need this function and confirm interface configuration of a model, email us: kuaiquinstrument@163.com..

The banana plug adopts cross-slot design. Pry the metal slot slightly open with a screwdriver to make the plug clamp terminals tighter and safer..

All KUAIQU DC power supplies support basic battery charging. For dedicated long-term charging, our patented battery-charging model with independent BATTERY key and full charging protection is highly recommended.

A certain amount of ripple is normal for all switching DC power supplies. Ripple is a small residual AC component superimposed on the DC output and is an inherent characteristic of switching power supply technology. The typical ripple voltage of our power supplies ranges from approximately 100 mV to 300 mV, which is suitable for most general-purpose testing, maintenance, and electronic applications.

A: Minor fluctuations in the last displayed digit are normal and are typically caused by temperature drift within the electronic components. As ambient and internal temperatures change, small variations in the readings may occur. This falls within normal industry tolerances and does not affect the power supply's suitability for everyday electronics work, home repairs, DIY projects, or general testing. For applications requiring extremely high precision and ultra-stable output, a linear DC regulated power supply may be more appropriate.

This is normal and does not indicate a malfunction. The internal capacitors continue to hold a small amount of stored energy after the power is switched off. As the capacitors discharge, the display will gradually turn off, typically within 5–8 seconds.

In CV mode, the power supply maintains a fixed output voltage while the current varies according to the load. In CC mode, the power supply limits the output current to a preset value, automatically reducing voltage if necessary. CC mode is especially useful for battery charging, LED testing, and protecting electronic components.

This is normal behavior. The power supply contains internal filter capacitors that store electrical energy. When the output voltage is reduced, these capacitors require a few seconds to discharge, causing the displayed voltage to decrease more gradually than when increasing the voltage. Q: Why does t

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FAQs

If you have any other questions or technical doubts about our DC power supplies, please feel free to contact us anytime. Our professional support team will reply to you as soon as possible.

Output ripple refers to small residual AC fluctuations present in the DC output. Lower ripple levels provide cleaner power, which is important when testing sensitive electronics, RF circuits, audio equipment, and precision instruments.

Yes, all DC regulated power supplies manufactured by KUAIQU support battery charging. However, if you mainly intend to charge batteries, I would highly recommend our patented DC power supply specially designed for battery charging. It comes with an exclusive dedicated BATTERY function key, and built-in specialized charging protection functions to safeguard your batteries during the whole charging process..

This is normal behavior. The power supply contains internal filter capacitors that store electrical energy. When the output voltage is reduced, these capacitors require a few seconds to discharge, causing the displayed voltage to decrease more gradually than when increasing the voltage..

This is normal and does not indicate a malfunction. The internal capacitors continue to hold a small amount of stored energy after the power is switched off. As the capacitors discharge, the display will gradually turn off, typically within 5–8 seconds..

This is a common operation issue for adjustable DC power supplies. Please follow the steps below to solve the voltage adjustment failure: Turn the current adjustment knob clockwise moderately to set the unit to constant voltage (C.V) mode; After confirming the power supply enters CV mode, turn the voltage adjustment knob clockwise, then you can freely adjust the output voltage value..

It is recommended to pre-adjust the voltage to around 5V before operation. This step prevents spark generation when connecting short-circuited loads, which effectively avoids safety accidents and other hidden electrical hazards..

A: Our banana plug adopts cross-slot design. If the plug becomes loose, use a screwdriver to slightly pry open the metal slot, which can make the plug clamp tighter and connect more safely..

Some models of our KUAIQU DC regulated power supplies support programmable control. They are equipped with USB, RS232 or RS485 communication interfaces and adopt the Modbus protocol. You can realize remote control easily by using our self-developed PC software. If you need programmable control but are unsure whether a specific model comes with your required communication interface, please feel free to contact us via email: kuaiquinstrument@163.com.

If you have any confusion about using OVP, OCP and other built-in functions, our professional customer support staff will provide targeted guidance for you. We also upload complete step-by-step tutorial videos on our official YouTube channel. Apart from OVP and OCP over-protection setup, the videos demonstrate memory storage function and all common operation skills. You can visit our channel via https://www.youtube.com/ In addition, our official blog contains a large number of popular science and technical articles about DC power supplies, you can search and browse related content to solve your problems.

In CV mode, the power supply maintains a fixed output voltage while the current varies according to the load. In CC mode, the power supply limits the output current to a preset value, automatically reducing voltage if necessary. CC mode is especially useful for battery charging, LED testing, and protecting electronic components.