# Keysight N8943A 500 V, 30 A, 5 kW Autoranging System DC Power Supply (400 VAC) (Pre-Owned)

# Keysight N8943A 500 V, 30 A, 5 kW Autoranging System DC Power Supply (400 VAC) (Pre-Owned)

## Key Features At A Glance

-   Autoranging output delivers many voltage and current combinations at full power — one unit replaces multiple supplies
-   Output power of 5, 10, or 15 kW with ratings up to 1500 V and up to 510 A across the 28-model series
-   14 voltage/current/power combinations offered with either 208 VAC or 400 VAC inputs (28 total models)
-   LAN (LXI Core), USB 2.0, GPIB, and analog interfaces all standard for ATE and test-system integration
-   Parallel up to ten identical units via built-in primary/secondary control for over 100 kW total output
-   Built-in voltage and current measurement with simultaneous voltage, current, and power front-panel display
-   Over-voltage, over-current, and over-temperature protection shuts down the output on a fault condition
-   High power density — up to 15 kW in a compact 3U (5.25 in / 13.34 cm) chassis

The Keysight N8900 Series is a family of autoranging, single-output programmable DC power supplies built for ATE applications. The series spans 5, 10, and 15 kW of maximum output power and delivers programmable DC across a range of 80 to 1500 V and 20 to 510 A. Its defining characteristic is an autoranging output that offers a wide range of voltage and current combinations at full power, so a single N8900 can do the work of multiple traditional supplies.

A DC power supply provides controlled, programmable electrical power to a device under test. The N8900 Series is aimed at ATE applications that require just the right amount of performance at just the right price, and it adds system-ready features intended to simplify and accelerate test-system development — multiple standard I/O interfaces and a compact 3U form factor that saves rack space.

ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every used unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received from the manufacturer. Holding inventory directly means the pre-owned N8900 supply you order is on our own shelves and ready to move.

## Brand Heritage

Keysight Technologies traces its roots to Hewlett-Packard, whose test-and-measurement business was spun off as Agilent Technologies in 1999. In 2014, Agilent's electronic measurement business became an independent, separately listed company under the Keysight Technologies name.

## Compare Other Models in This Series

The N8900 Series comprises 28 autoranging system DC power supplies, organized into 5 kW, 10 kW, and 15 kW maximum-power classes. Within each power class the models differ in their maximum voltage and current ratings, spanning 80 V to 1500 V and 20 A to 510 A. Each of the 14 voltage/current/power combinations is offered with either a 208 VAC or a 400 VAC three-phase input, providing regional input flexibility across the full series.

All models share the same autoranging output characteristic, standard GPIB/LAN/USB/analog interfaces, built-in voltage and current measurement, and 3U chassis; what changes from model to model is the rated output envelope. The autoranging design lets each model deliver many voltage and current combinations at its full rated power rather than at a single fixed point.

Each model listed below is its own dedicated product page with condition-matched pricing. Choose the pre-owned configuration that matches the voltage, current, power, and AC-input combination your application requires to see availability and pricing for that exact model.

The models differ primarily along three axes shown in the comparison table: maximum output power (5, 10, or 15 kW), the maximum voltage and current envelope (from 80 V at high current up to 1500 V at lower current), and AC input voltage (208 VAC versus 400 VAC). Within a given power class, higher-voltage models trade maximum current for maximum voltage.

Because the outputs autorange, each model's rated power is available across a band of voltage and current rather than at a single point — the comparison table lists each model's maximum voltage, maximum current, and the current available at maximum voltage to show that usable range. Match the model to the highest voltage and current your test requires, then select the 208 VAC or 400 VAC input that fits your facility.

Model

Max Voltage

Max Current

Max Power

**N8943A**

500 V

30 A

5 kW

N8920A

80 V

170 A

5 kW

N8921A

200 V

70 A

5 kW

N8923A

500 V

30 A

5 kW

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

## Product Core & Specifications

Specification

N8920A / N8940A

N8921A / N8941A

N8923A / N8943A

N8924A / N8944A

N8925A / N8945A

N8926A / N8946A

N8928A / N8948A

N8929A / N8949A

N8930A / N8950A

N8931A / N8951A

N8932A / N8952A

N8934A / N8954A

N8935A / N8955A

N8937A / N8957A

DC Output Ratings

Maximum voltage

80 V

200 V

500 V

750 V

80 V

200 V

500 V

750 V

1000 V

80 V

200 V

500 V

750 V

1500 V

Current @ max voltage

62.5 A

25.0 A

10.0 A

6.7 A

125.0 A

50.0 A

20.0 A

13.3 A

10.0 A

187.5 A

75.0 A

30.0 A

20.0 A

10.0 A

Voltage @ max current

29.4 V

71.4 V

166.7 V

250.0 V

29.4 V

71.4 V

166.7 V

250.0 V

333.3 V

29.4 V

71.4 V

166.7 V

250.0 V

500.0 V

Maximum current

170 A

70 A

30 A

20 A

340 A

140 A

60 A

40 A

30 A

510 A

210 A

90 A

60 A

30 A

Maximum power

5 kW

5 kW

5 kW

5 kW

10 kW

10 kW

10 kW

10 kW

10 kW

15 kW

15 kW

15 kW

15 kW

15 kW

Output Voltage Ripple and Noise

CV p-p (20 Hz to 20 MHz)

200 mV

375 mV / 300 mV

350 mV

800 mV

320 mV

375 mV / 300 mV

350 mV

800 mV

1600 mV

320 mV

375 mV / 300 mV

350 mV

800 mV

2400 mV

CV rms (20 Hz to 300 kHz)

16 mV

40 mV

70 mV

200 mV

25 mV

40 mV

70 mV

200 mV

350 mV

25 mV

40 mV

70 mV

200 mV

400 mV

Load Effect (change from 0% to 100% of full load)

Voltage

40 mV

100 mV

250 mV

375 mV

40 mV

100 mV

250 mV

375 mV

500 mV

40 mV

100 mV

250 mV

375 mV

750 mV

Current

255 mA

105 mA

45 mA

30 mA

510 mA

210 mA

90 mA

60 mA

53 mA / 45 mA

765 mA

315 mA

135 mA

90 mA

53 mA / 45 mA

Programming Accuracy (23 °C ± 5 °C)

Voltage

≤ 80 mV

≤ 200 mV

≤ 500 mV

≤ 750 mV

≤ 80 mV

≤ 200 mV

≤ 500 mV

≤ 750 mV

≤ 1.0 V

≤ 80 mV

≤ 200 mV

≤ 500 mV

≤ 750 mV

≤ 1.5 V

> **Important:** Line cords and terminations are not included — the N8900 supplies ship without them, and users provide their own according to local laws and codes.

> **Important:** Series operation is not recommended. Only parallel operation is supported: up to ten identical units (same model number) can be connected in parallel for greater output current and can be configured to look like one big power supply.

> **Important:** AC input voltage selection: if the AC input voltage where the supply will be used is 187 to 229 VAC, choose a 208 VAC model (N8920A-N8937A); if 360 to 440 VAC, choose a 400 VAC model (N8940A-N8957A).

> **Important:** For non-Keysight racks, use standard rack rails (the N8958A rack mount kit is for Keysight racks).

## About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

-   Warranty included
-   Functional verification included
-   Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
-   Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

**Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.**

## Details

- **Price:** 0.0 USD - 153.0 USD
- **Vendor:** Keysight Technologies
- **Type:** Dc Supply
- **Tags:** Agilent, Agilent Keysight, DC Power Supply, Manufacturers, Power Supplies & Loads, product_manual_group_1, Product_used

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 93.50 USD | In stock |
| NIST Traceable with Full Data | 110.50 USD | In stock |
| ISO IEC 17025 Accredited | 153.00 USD | In stock |

## Images

- Keysight N8943A 500 V, 30 A, 5 kW Autoranging System DC Power Supply (400 VAC) (Pre-Owned)

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> Source: [ValueTronics](https://valuetronics.com/products/n8943a-agilent-dc-power-supply-used)
> Updated: 2026-06-20