| Current | 3A |
|---|---|
| Voltage | 400V |
| Wattage | 1000 ～ 1500W |
eTM-4003 400V 3A Variable Bench DC Power Supply
Original price was: $ 1,099.00.$ 649.00Current price is: $ 649.00.
Adjustable 0–400V and 0–3A output for laboratory and high-voltage circuit testing, with CV/CC operation, coarse and fine controls, and output on/off switching.
- Low noise and low ripple
- Preset voltage and current before enabling the output
- Four-digit LED display with automatic decimal-point positioning
- Separate coarse and fine voltage and current controls
- Independent output on/off button and automatic CV/CC operation
- Overvoltage, overcurrent, overpower, overtemperature and short-circuit protection
- Temperature-controlled cooling fan
- 220–240V or optional 110–130V AC input
- Optional SENSE compensation and external trigger
- Optional RS232/RS485/USB interfaces for output on/off control and readback
Choose your AC input and available options, then order online.
Additional information
Product Paramenters
Product Paramenters
| Model | eTM-4003 |
| Input Voltage | AC 220V + 10% (Optional: Fixed AC110V input; or AC110V/220V Toggle Input ) |
| Input Frequency | 50Hz/60Hz |
| Output Voltage | Constant voltage value range: 0-400V, continuously adjustable |
| Output Current | Constant current value range: 0-3A, continuously adjustable |
| Way of Working | Automatic switching between constant voltage and constant current mode |
| Constant Current Indication | CC, red LED indicator |
| Constant Voltage Indication | CV, green LED indicator |
| Display Resolution | Four-digits display: voltage 100mV, current 10mA |
| Setting Accuracy | Voltage: ± 0.1V Current: ± 0.1A |
| Ripple & Noise | ≤1% (valid values) |
| Protective Function | Overvoltage Protection, Overcurrent Protection, Overpower Protection, Overtemperature Protection, and Short Circuit Protection |
| Working Environment | Temperature: 5-40 celsius Relative Humidity: <80% |
| Storage Environment | Temperature: 0-70 celsius Relative Humidity: <70% |
| Height above Sea Level | ≤2000m |
| Dimension | 330*250*155mm (Length*Width*Height)mm |
| Weight | 5KG |
| Category | 400V DC Power Supply, HV DC Power Supply |
Product Description
Product Description
Adjustable 0–400V output and 0–3A current control for high-voltage bench testing. Separate coarse and fine controls, four-digit LED readouts and an output on/off button put everyday adjustments on the front panel.
Control voltage and current at the bench
Set the voltage and current before enabling the output. Use the coarse controls to reach your working range, then make smaller adjustments with the fine controls. The supply switches automatically between constant-voltage and constant-current operation as the load reaches the current setting.
- Continuously adjustable 0–400V voltage range
- Continuously adjustable 0–3A current range
- Separate voltage and current controls
- Output enable/disable button
- CV and CC status indicators
- Temperature-controlled cooling fan
eTM-4003 specifications
| Model | eTM-4003 |
|---|---|
| Output voltage | 0–400V, continuously adjustable |
| Output current | 0–3A, continuously adjustable |
| Operating modes | Constant voltage and constant current, automatic transition |
| Display | Four-digit LED |
| Voltage display resolution | 100mV |
| Current display resolution | 10mA |
| Input frequency | 50/60Hz |
| Dimensions | 330 × 250 × 155mm, depth × width × height |
| Net weight | Approximately 5kg |
| Operating environment | 5–40°C, relative humidity below 80%, altitude up to 2,000m |
Connections and configuration
Choose the AC input and output lead options to match your installation. Optional SENSE compensation and external trigger configurations are available through the product options.
| Requirement | Configuration |
|---|---|
| Local bench operation | Front-panel voltage/current adjustment and output on/off control |
| AC input | 220–240V or the listed 110–130V option |
| Voltage sensing at the load | Optional SENSE compensation interface |
| External switching | Optional external trigger interface |
| Computer connection | RS232, RS485 and USB are listed as optional interfaces. Listed remote functions are output on/off and readback. Request the required interface configuration when ordering. |
Applications for a 400V variable bench power supply
High-voltage circuit development
Power a prototype at different DC input voltages during laboratory development. The 0–400V adjustment range lets you check circuit behavior across your test points, while separate coarse and fine controls make manual voltage changes straightforward. Set the current limit to suit the circuit before enabling the output.
DC-input equipment testing
Use the eTM-4003 for bench checks of DC-powered circuits and equipment whose operating requirements fit its 400V, 3A range. Compare operation at different supply voltages and switch the output off between wiring changes. Include startup current in your selection, especially for equipment with input capacitors.
Test fixtures with longer output leads
When lead resistance causes a voltage drop between the supply and the test fixture, the optional SENSE interface measures voltage at the load connection for compensation. Choose the sensing option and suitable output leads for your fixture.
Protection and cooling
The eTM-4003 lists overvoltage, overcurrent, overpower, overtemperature and short-circuit protection. Front-panel indicators show operating and protection status, while temperature-controlled fan cooling supports heat removal during use.
Bench space
The eTM-4003 enclosure measures 330mm deep, 250mm wide and 155mm high. Allow space around the ventilation openings and behind the unit for output wiring and AC connections.
eTM-4003 FAQs
How do I choose a 400V DC power supply for my test bench?
Start with the highest DC voltage and continuous current your device needs, then check startup demand and the required controls. The eTM-4003 offers 0–400V and 0–3A adjustment with manual coarse and fine controls. Choose the AC input and any SENSE, trigger or communication option to match your test setup.
Can I adjust the output voltage and current independently?
Yes. Separate controls set the voltage from 0 to 400V and the current limit from 0 to 3A. In constant-voltage mode, the load determines the current drawn. When the load reaches the current setting, the supply transitions to constant-current operation.
Can I use this 400V power supply with a 110V AC outlet?
A 110–130V AC input configuration is available in the product options, alongside 220–240V. Select the input for your installation before ordering. These are AC input choices; the adjustable DC output range is 0–400V.
When should I choose the remote sense option?
Choose optional SENSE compensation when voltage drop in the output leads affects the voltage at your test fixture. This is useful with longer leads or higher current. SENSE is an optional configuration, so select it with your order.
Can I control the output through RS485 or USB?
Optional RS232, RS485 and USB interfaces support output on/off and readback functions. Specify the interface and commands your setup requires before ordering a computer-connected configuration.
How do I order the eTM-4003 online?
Select the AC input, output lead option and available SENSE or external trigger configuration above, choose the quantity, and add the product to your cart. For a communication interface configuration, use Get Quote to specify your requirements.
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