# B&K Precision MR50040 500V/40A 5000W High Voltage Multi-Range DC Power Supply # B&K Precision MR50040 500V/40A 5000W High Voltage Multi-Range DC Power Supply ## Key Features At A Glance - Multi-ranging operation across the family — output up to 1000 V or 120 A, capable of replacing multiple fixed-range power supplies - Compact 2U form factor with single-phase AC line input (200–240 VAC, 47–63 Hz) - Standard USB (USBTMC), RS232, GPIB, and LXI-compliant LAN interfaces plus galvanically isolated analog control - Protection features: OVP, OCP, OPP, OTP, foldback protection mode, and key-lock function - Adjustable voltage and current slope (rise and fall time) with timer-controlled output settable from 1 second to 255 hours - List mode: 10 user-defined setups with up to 100 programmable steps each - Built-in SAS function with storage of up to 101 I-V curves and 4096-point table for solar array simulation - Master/Slave parallel operation provides up to 50 kW with 10 units connected; control up to 50 power supplies from one PC The B&K Precision MR25080 is part of the MR Series of high voltage multi-range programmable DC power supplies, delivering 250 V at up to 80 A with a maximum output power of 5000 W in a compact 2U chassis. Unlike traditional power supplies with rectangular output characteristics that deliver maximum power at only one voltage/current point, the multi-range architecture of the MR Series broadens the maximum power output across a curve — meaning a single MR25080 can replace multiple fixed-range power supplies in benchtop or system applications. The MR Series is designed for both bench use and automated test system applications requiring a wide range of voltage and current. Listed applications include solar inverter testing (via the built-in SAS solar array simulator function), MPPT efficiency validation, simulation of I-V curves under various irradiance and weather conditions, and general benchtop power delivery where intuitive list-mode programming and slew rate adjustments are needed directly from the front panel. The series is also suited to integrators who require fast command response times, low noise characteristics, and standard SCPI-controlled interfaces. ## Brand Heritage B&K Precision Corporation has operated continuously as B&K Precision since its founding more than 60 years ago, with headquarters in Yorba Linda, California. The company has no major corporate name changes in its T&M instrument line. European operations are conducted through its French subsidiary Sefram, and Asian operations through B+K Precision Taiwan, but the B&K Precision brand identity for test and measurement equipment has remained consistent throughout the company's history. ## Compare Other Models in This Series The MR Series is a five-model line of high voltage multi-range programmable DC power supplies covering output voltages from 160 V to 1000 V and output currents from 20 A to 120 A. Every model in the series shares the same 2U form factor, the same standard interface complement (USB, RS232, GPIB, LXI LAN, and galvanically isolated analog), the same protection feature set, and the same list-mode and SAS solar array simulation capabilities. The differentiator across the family is the output voltage/current envelope and the maximum output power tier. Two power tiers exist within the MR Series. The MR3K160120 is rated at 3000 W maximum output, while the other four models — MR160120, MR25080, MR50040, and MR100020 — are rated at 5000 W. Multi-range operation means each model can deliver its full rated power across a curve of voltage and current combinations rather than at a single fixed operating point, so the practical replacement value of a single MR Series unit is meaningful when standardizing a lab away from multiple fixed-range supplies. Each new MR Series model below is listed as its own product page with condition-matched pricing. Use the comparison data to confirm which voltage/current envelope fits your application, then select the specific model page to review current availability and place the order. The MR25080 sits in the middle of the MR Series voltage/current envelope: 250 V at 80 A, 5000 W. It is the natural choice for applications that need more headroom above the 160 V models for higher-voltage device-under-test work, but do not require the 500 V or 1000 V output of the upper-tier models. The MR25080's programming resolution of 10 mV / 5 mA and remote sense compensation of 5 V reflect this mid-range positioning. The five MR Series models partition the output envelope as follows: 160 V / 120 A at 3000 W (MR3K160120), 160 V / 120 A at 5000 W (MR160120), 250 V / 80 A at 5000 W (MR25080), 500 V / 40 A at 5000 W (MR50040), and 1000 V / 20 A at 5000 W (MR100020). The MR3K160120 and MR160120 share the same voltage/current envelope but differ in maximum output power (3000 W vs. 5000 W) and in their high-current output terminals, which on the 120 A models are enhanced to support connections to larger gauge wire. Programming resolution, programming accuracy, readback accuracy, remote sense compensation, and OVP/OCP ranges all scale with the model's voltage and current envelope. The comparison table that follows captures these key per-model specifications side by side so the right tier can be selected against the application's voltage, current, and power requirements. Model Max Output Voltage Max Output Current Max Output Power **MR50040** 500 V 40 A 5000 W MR3K160120 160 V 120 A 3000 W MR160120 160 V 120 A 5000 W MR25080 250 V 80 A 5000 W Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Power cord - Test report - Certificate of calibration ## Product Core & Specifications Specification MR3K160120 MR160120 MR25080 MR50040 MR100020 Output Rating Output Voltage 0 to 160 V 0 to 160 V 0 to 250 V 0 to 500 V 0 to 1000 V Output Current 0 to 120 A 0 to 120 A 0 to 80 A 0 to 40 A 0 to 20 A Output Power 3000 W 5000 W 5000 W 5000 W 5000 W Line Regulation Voltage 32 mV 32 mV 15 mV 55 mV 80 mV Current 60 mA 60 mA 20 mA 12 mA 10 mA Load Regulation Voltage 80 mV 80 mV 120 mV 200 mV 250 mV Current 180 mA 180 mA 50 mA 40 mA 25 mA Ripple and Noise (20 Hz to 20 MHz) Voltage p-p 120 mV 160 mV 500 mV 600 mV 700 mV Voltage rms 48 mV 48 mV 85 mV 75 mV 120 mV Current rms(1) 120 mA 160 mA 20 mA 10 mA 5 mA Resolution Programming 10 mV / 7.5 mA 10 mV / 7.5 mA 10 mV / 5 mA 20 mV / 2 mA 100 mV / 1 mA Readback 10 mV / 7.5 mA 10 mV / 7.5 mA 10 mV / 5 mA 20 mV / 2 mA 100 mV / 1 mA Programming Accuracy Voltage 160 mV 160 mV 100 mV 300 mV 500 mV Current 360 mA 360 mA 60 mA 50 mA 25 mA Readback Accuracy Voltage 160 mV 160 mV 250 mV 300 mV 500 mV Current 240 mA 240 mA 60 mA 50 mA 25 mA Output Response Time(2) Rise Time, Full Load ≤ 30 ms ≤ 30 ms ≤ 30 ms ≤ 30 ms ≤ 30 ms Rise Time, No Load ≤ 30 ms ≤ 30 ms ≤ 30 ms ≤ 30 ms ≤ 30 ms Fall Time, Full Load ≤ 80 ms ≤ 50 ms ≤ 55 ms ≤ 40 ms ≤ 50 ms Fall Time, No Load ≤ 10 s ≤ 10 s ≤ 8 s ≤ 10 s ≤ 10 s Protection OVP Range 0 to 176 V 0 to 176 V 0 to 275 V 0 to 550 V 0 to 1100 V OVP Accuracy 1.6 V 1.6 V 2.5 V 5 V 10 V OCP Range 0 to 132 A 0 to 132 A 0 to 96 A 0 to 48 A 0 to 24 A OCP Accuracy 1.2 A 1.2 A 0.8 A 0.4 A 0.2 A General Remote Sense Compensation 3.2 V 3.2 V 5 V 10 V 20 V (1) Current ripple is applied when output power > 1.0% of full power. (2) From 10% to 90% or from 90% to 10% of total voltage excursion. (3) Time for output voltage to recover within 1% of its rated output voltage for a load change 50-100% of rated output current. (4) Typical time required for output to begin to change following receipt of command data. (5) At nominal line and maximum load. **Important:** Maximum rated input power on the MR25080 is 6000 VA at 200–240 VAC single-phase, 47–63 Hz.**Important:** All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ± 5 °C. Specifications are valid for single unit operation only.**Important:** The MR Series requires a single-phase 200 to 240 VAC (±10%, 47–63 Hz) AC mains input; it is not compatible with standard North American 120 VAC outlets.**Important:** Rack mount kit (RKPVS) is an optional accessory and is not included with the standard delivery. **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:** 6879.0 USD - **Vendor:** B&K Precision - **Type:** Dc Supply - **Tags:** BK Precision, DC Power Supply, Manufacturers, Power Supplies & Loads, product_manual_group_2, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 6879.00 USD | In stock | ## Images - MR50040 BK Precision DC Power Supply - B&K Precision MR50040 500V/40A 5000W High Voltage Multi-Range DC Power Supply --- > Source: [ValueTronics](https://valuetronics.com/products/mr50040-b-k-precision-dc-power-supply-new) > Updated: 2026-05-30