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GW-GSP200W-4

GSP series

INQUIRY READY

GW-GSP200W-4

Greatwall / Industrial Power Supply / GSP series

GW-GSP200W-4 targets Communication Equipment and POS Systems and uses 120W capacity and natural convection to maintain practical deployment in systems that cannot tolerate unstable power.

Model
GW-GSP200W-4
Product Type
Enclosed AC-DC Power Supply
Rated Output Power
120W
Input Voltage Range
90–264Vac / 127–370Vdc
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PRODUCT OVERVIEW

Built for reliable, continuous power delivery.

The GW-GSP200W-4 is designed for systems that require unusually high current at a low 4V output. Its wide AC/DC input range, active PFC, half-bridge LLC topology, natural cooling, and standoff output connection support integration into industrial, testing, display, and embedded-electronics platforms. For this 120W capacity, for long-term service, document fan inspection, connector seating, event-log review, and replacement procedures as part of the maintenance plan.

Plan the GW-GSP200W-4 output wiring around the actual current demand: keep conductors short, use low-resistance terminations, separate power paths from sensitive signal wiring, and preserve access for retightening and inspection. Arrange the enclosure so heat from neighboring components cannot collect around the supply or its connection points.

Qualify the GW-GSP200W-4 at several load levels, measuring voltage at both the supply terminals and the equipment input rather than relying only on no-load readings. Record cable drop, connector temperature, and enclosure temperature as baseline values. Later maintenance checks can compare against this record to identify loose joints, rising contact resistance, or deteriorating heat dissipation before they interrupt service.

CORE ADVANTAGES

120W 4V High-Current Enclosed AC-DC Power Supply for Processor Boards, LED Control, Automated Test, and Low-Voltage Industrial Electronics

The GW-GSP200W-4 delivers a regulated 4V / 30A output with up to 120W of output power , supporting processor boards, LED control electronics, automated test fixtures, high-current logic circuits, and other equipment requiring a stable low-voltage DC source.

01

120W High-Current DC Power Capacity

The GW-GSP200W-4 delivers a regulated 4V / 30A output with up to 120W of output power , supporting processor boards, LED control electronics, automated test fixtures, high-current logic circuits, and other equipment requiring a stable low-voltage DC source.

02

Slim 215 × 115 × 30 mm Enclosed Structure

Built in a low-profile 215 × 115 × 30 mm metal enclosure , this model is suitable for installation inside industrial equipment, production test stations, display-control systems, embedded platforms, and other applications where vertical mounting space is limited.

03

Wide AC and DC Input Compatibility

It supports 90–264Vac input and 127–370Vdc input , enabling operation from common international AC grids as well as compatible high-voltage DC distribution systems.

04

Stable 4V / 30A Output Performance

The unit provides a high-current 4V DC output at up to 30A , making it suitable for low-voltage processor rails, control boards, programmable loads, LED driver assemblies, and specialized electronic circuits with substantial current demand.

05

Active PFC and Half-Bridge LLC Conversion

Built-in active PFC improves input power utilization, while the half-bridge LLC topology supports efficient high-current conversion and stable continuous output for demanding low-voltage loads.

06

Natural Cooling and Comprehensive Protection

With fanless natural-convection cooling, adjustable output voltage, low-ripple output, and short-circuit, overcurrent, overvoltage, and overtemperature protection, the GW-GSP200W-4 supports dependable operation from -30°C to +70°C .

MODEL SELECTION

Compare Greatwall industrial power options.

Review nearby Greatwall models and select the output voltage, power level, and integration profile that best match the target system.

Model Output Voltage Rated Current Rated Power Best-Fit Application
GW-GSP200W-4 4Vdc 50A 200W High-current processor rails, automated test fixtures, LED controllers, and specialized 4V electronics
GW-GSP200W-5 5Vdc 40A 200W Embedded boards, display-control systems, logic circuits, and high-current 5V equipment
GW-GSP200W-12 12Vdc 16.7A 200W Industrial computers, security equipment, communication terminals, and general-purpose 12V systems
GW-GSP200W-15 15Vdc 13.3A 200W Test instruments, signal-processing modules, machine-vision equipment, and dedicated 15V electronics
GW-GSP200W-24 24Vdc 8.3A 200W PLC systems, industrial sensors, relays, actuators, and automation equipment
GW-GSP200W-27 27Vdc 7.4A 200W RF communication modules, broadcast electronics, telemetry systems, and specialized 27V loads
GW-GSP200W-36 36Vdc 5.6A 200W Industrial drives, battery-related equipment, control platforms, and dedicated 36V systems
GW-GSP200W-48 48Vdc 4.2A 200W Telecom infrastructure, industrial networking, remote communication, and distributed 48V systems

DEPLOYMENT SCENARIOS

Where GW-GSP200W-4 fits best.

The GW-GSP200W-4 is designed for systems that require unusually high current at a low 4V output. Its wide AC/DC input range, active PFC, half-bridge LLC topology, natural cooling, and standoff output connection support integration into industrial, testing, display, and embedded-electronics platforms.

Deployment Scenario Application Description
Processor and Logic Boards Supplies high-current low-voltage power to processor modules, FPGA platforms, logic boards, and dedicated computing circuits
Automated Test Fixtures Powers production test jigs, programmable loads, validation stations, and electronic burn-in equipment
LED Control Electronics Supports LED controller boards, display-processing modules, receiving cards, and low-voltage lighting-control circuits
Industrial Embedded Systems Powers carrier boards, interface modules, control processors, and custom embedded electronics
Semiconductor Test Equipment Provides regulated low-voltage power for device characterization, board verification, and component test systems
Custom High-Current Electronics Integrates into specialized equipment requiring a stable 4V rail with substantial continuous current

POWER DESIGN

Reliability notes for continuous operation.

The GW-GSP200W-4 combines an active-PFC input stage with a half-bridge LLC conversion architecture to produce a regulated 4V output from a wide AC or high-voltage DC input. The 30A current rating places greater importance on conductor resistance, connection quality, and voltage-drop control than in higher-voltage variants.

  • Natural-convection cooling eliminates the need for an integrated fan, helping reduce acoustic noise and mechanical maintenance. The adjustable output function can assist with system calibration or compensation for losses in short output conductors.
  • Key reliability features include:
  • Active PFC with half-bridge LLC conversion
  • 90–264Vac and 127–370Vdc input compatibility
  • Natural-convection fanless cooling
  • Low-ripple and low-noise regulated 4V output
  • Adjustable output voltage with LED status indication
  • Comprehensive SCP, OCP, OVP, and OTP protection
  • 100% high-temperature burn-in testing
  • Conformal-coated PCB with operation support up to 5,000 meters
  • Design aligned with IEC, EN, and UL 62368 safety requirements

INSTALLATION

Installation and operating guidance.

Confirm electrical compatibility, thermal clearance, mechanical fit, and system load before integration.

Item Installation Recommendation
AC or DC Input Confirm the input source and connect it only within the specified AC or DC voltage range
DC Input Polarity Verify polarity carefully when using the 127–370Vdc input option
Output Connection Confirm the positive and negative 4V output terminals before connecting the load
Cable Selection Use very short, low-resistance conductors capable of safely carrying the full 30A output current
Terminal Tightening Secure the standoff connections firmly to minimize contact resistance and localized heating
Voltage Drop Measure voltage at the load under full current and account for conductor and terminal losses
Grounding Connect the protective-earth terminal to a reliable equipment ground
Natural Cooling Install the unit where air can circulate freely through and around the enclosure
Installation Clearance Keep adequate spacing from heat sources, solid panels, and airflow obstructions
Output Adjustment Use a calibrated multimeter and make only small adjustments while monitoring the connected load
Load Capacity Keep the continuous load within the rated 120W and 30A output limits
Maintenance Disconnect the input and allow stored energy to discharge before inspection or servicing

FAQ

Frequently asked questions about GW-GSP200W-4.

Key answers for specification matching, installation planning, and system integration.

What type of power supply is the GW-GSP200W-4?

The GW-GSP200W-4 is an enclosed, fanless AC-DC switching power supply with active PFC, half-bridge LLC conversion, high-voltage DC input compatibility, and a high-current 4V output.

What are the dimensions of the GW-GSP200W-4?

Its external dimensions are approximately 215 × 115 × 30 mm.

What input-voltage ranges does it support?

It supports 90–264Vac input and 127–370Vdc input.

What are its rated output voltage, current, and power?

The unit provides 4V DC, a maximum output current of 30A, and a rated output power of 120W.

Why is the model called GW-GSP200W-4 if the listed output is 120W?

The model belongs to the GW-GSP200W product family, while the supplied specification rates this low-voltage version at 4V × 30A = 120W.

Does the power supply require a cooling fan?

No. It uses natural-convection cooling. Adequate installation clearance and surrounding airflow are still necessary for reliable heat dissipation.

What protection functions are included?

The power supply includes short-circuit, overcurrent, overvoltage, and overtemperature protection.

What must be considered when using the 30A output?

Use short, adequately sized conductors and low-resistance connections. Voltage should be measured at the load under operating current because even small wiring resistance can create a meaningful voltage drop.

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