KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
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KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing

KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing

$99.90
$99.90
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InputVoltage: AC220V(±10%)
Model: SPS1203S
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KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing

KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing

$99.90
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing
KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing

KUAIQU SPS1203S 120V 3A 360W Precision DC Bench Supply with OCP Protection for Power Electronics Testing

$99.90
InputVoltage: AC220V(±10%)
Model: SPS1203S
Product Details

Download English Manual (PDF)

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

KUAIQU SPS1203S 120V 3A 360W

Precision DC Bench Supply with OCP

Protection for Power Electronics Testing

The KUAIQU SPS1203S is a 120V 3A 360W Precision DC Bench Supply designed for Power Electronics Testing and compatible electronic circuit applications. With an adjustable 0–120V output range, the power supply allows users to establish different DC voltage conditions when testing power electronic circuits, converter stages, control boards, and other compatible devices within the rated output range.

For bench testing and circuit evaluation, the SPS1203S combines adjustable voltage and current control with real-time electrical monitoring. The encoder knob allows users to configure output parameters, while the HD 4-Digit Display provides clear readings of voltage, current, and power during operation. OCP and OVP provide output protection functions, and the Independent Output Button allows test parameters to be prepared before DC output is enabled.

Key Features

0–120V Adjustable Output for Power Electronics Testing

The SPS1203S provides an adjustable DC output from 0 to 120V, giving users a wide voltage range for Power Electronics Testing. Different voltage conditions can be established when evaluating compatible power circuits, electronic modules, and conversion stages operating within the product's rated specifications.

The wide output range also allows a single DC Bench Supply to cover multiple test voltage requirements without changing the main power source during different stages of bench evaluation.

Up to 3A Current and 360W Output Power

With an output current range of 0–3A and a maximum power rating of 360W, the SPS1203S provides adjustable DC power for compatible electronic testing applications.

Users can set appropriate voltage and current conditions according to the requirements of the circuit or device under test, provided that operation remains within the rated voltage, current, and power limits of the power supply.

Encoder Control for Flexible Parameter Adjustment

The SPS1203S uses an encoder knob for output parameter adjustment, allowing users to configure voltage and current settings during bench testing.

The knob provides an operation prompt sound and supports a mute setting. This allows users to adjust output parameters according to their preferred operating environment while setting up different Power Electronics Testing conditions.

Detailed Voltage and Current Setting Resolution

The SPS1203S provides different voltage setting resolutions across its output range:

  • Below 100V: 10mV voltage setting resolution

  • At 100V and above: 0.1V voltage setting resolution

  • Current setting resolution: 1mA

These settings allow users to configure voltage and current values within the specified resolution of the SPS1203S when establishing test conditions for compatible power electronic circuits.

HD 4-Digit Display for Real-Time Output Monitoring

During Power Electronics Testing, monitoring the supplied electrical conditions is important when adjusting test parameters. The HD 4-Digit Display provides real-time readings of voltage, current, and power.

Users can observe output parameter changes while configuring different voltage and current conditions for compatible electronic circuits and devices.

Independent Output Button for Controlled Test Setup

The Independent Output Button allows users to configure voltage and current parameters before enabling the DC output.

For example, users can prepare the required test settings while the output remains disabled, connect the compatible circuit or device, and then enable the output when the test configuration is ready.

OCP Protection for Current Control During Testing

The SPS1203S includes Over-Current Protection (OCP), which provides protection when excessive current conditions occur during operation.

This function can provide additional protection when testing compatible power electronic circuits with changing current requirements within the operating conditions of the power supply.

OVP Protection for Output Voltage Conditions

The SPS1203S also includes Over-Voltage Protection (OVP), providing an additional protection function related to abnormal voltage conditions during operation.

Together with adjustable voltage control, OVP provides additional protection support during compatible Power Electronics Testing applications.

USB-A and USB-C Fast Charging Outputs

In addition to the main DC output, the SPS1203S includes USB-A and USB-C fast charging interfaces for compatible devices.

The supported output specifications include:

USB-A:

  • PDO: 5V/3A

  • PDO: 9V/2A

  • PDO: 12V/1.5A

USB-C:

  • PPS: 3.3V–5.9V/3A

  • PPS: 3.3V–11V/1.6A

The USB-A interface supports PE1.1/2.0, APPLE, BC1.2, AFC, FCP, QC2.0, and QC3.0 protocols.

The USB-C interface supports PE1.1/2.0, APPLE, BC1.2, AFC, QC2.0, QC3.0, and PD3.0 protocols.

Applications

Power Electronics Testing

The SPS1203S provides adjustable DC power conditions for evaluating compatible power electronic circuits within its rated 0–120V, 0–3A, and 360W output range.

Power Circuit Development and Evaluation

Different voltage and current settings can be established when testing compatible power circuits during circuit development, functional evaluation, and bench operation.

Power Conversion Stage Testing

The adjustable DC output can provide selected input conditions for compatible power conversion stages and related electronic assemblies operating within the rated specifications.

Electronic Module Testing

Users can configure voltage and current values according to the requirements of compatible electronic modules and observe output voltage, current, and power during testing.

Bench Testing and Electrical Parameter Observation

With adjustable output control and an HD 4-Digit Display, the SPS1203S supports bench testing applications where users need to configure DC power conditions and monitor electrical parameters in real time.

Quality Check and Terms of Service

Package Includes

Each KUAIQU SPS-S Upgrade Series DC Power Supply is packaged with the standard accessories required for normal operation.

  • DC Power Supply ×1

  • Output Cable ×1

  • Input Cable ×1

  • User Manual ×1

  • Warranty Card ×1

CE & FCC Certification

The SPS1203S is designed to meet applicable CE and FCC requirements for its intended use.

Inspection Before Shipment

Each power supply undergoes inspection before shipment to help ensure proper operation and product quality.

Customer Support within 24 Hours

For questions about product operation, specifications, or usage, KUAIQU customer support provides assistance within 24 hours.

Technical Specifications

Item Sub-item Specification
Rated Value (0°C~40°C) Voltage 0–120V
Current 0–3A
Power 360W
USB / Type-C Output USB-A PDO: 5V/3A, 9V/2A, 12V/1.5A
USB-C PPS: 3.3V–5.9V/3A, 3.3V–11V/1.6A
Load Regulation Voltage ≤0.3% + 10mV
Current ≤0.1% + 2.5mA
Line Regulation Voltage ≤0.01% + 2.5mV
Current ≤0.1% + 2.5mA
Setting Resolution Voltage <100V: 10mV; ≥100V: 0.1V
Current 1mA
Readback Resolution Voltage <100V: 10mV; ≥100V: 0.1V
Current 1mA
Setting Accuracy Voltage ≤0.01% + 15mV
Current ≤0.01% + 10mA
Readback Accuracy Voltage ≤0.01% + 15mV
Current ≤0.01% + 10mA
Ripple (20Hz~20MHz) Voltage ≤300mVp-p / ≤30mVrms
Current ≤30mArms
Rise Time (No Load) Time ≤200ms
Rise Time (Full Load) Time ≤300ms
Fall Time (No Load) Time ≤30s
Fall Time (Full Load) Time ≤300ms
Dynamic Response Time ≤200ms
Efficiency - ≥85%
Input Voltage / Current - AC 220V (AC110V optional)
Size / Net Weight - Approx. 22 × 8.5 × 15.5cm, 1.2kg
Package Size / Weight - Single unit: 29.5 × 13 × 21cm, 1.65kg

Why Choose KUAIQU SPS1203S?

The KUAIQU SPS1203S combines a 0–120V adjustable voltage range, 0–3A output current, and 360W maximum power in a compact Precision DC Bench Supply designed for compatible Power Electronics Testing applications.

Its wide voltage range allows users to establish different DC input conditions, while the encoder control supports convenient adjustment of output parameters. The specified voltage and current resolutions provide detailed configuration options across the SPS1203S operating range.

The HD 4-Digit Display provides real-time voltage, current, and power monitoring, helping users observe the electrical conditions supplied to compatible circuits during bench testing. The Independent Output Button allows parameters to be configured before output is enabled, while OCP and OVP provide additional protection functions during operation.

With adjustable DC output, encoder control, real-time electrical monitoring, dual USB fast charging interfaces, and a rated output range of up to 120V, 3A, and 360W, the SPS1203S is a practical choice for compatible power electronics, electronic modules, power circuit evaluation, and laboratory bench testing applications.

Warranty

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.

Price Guarantee

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.

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