Cost-optimized EA-PUL 10000 4U series regenerative DC electronic loads with wide 80–2000V input, 40–1000A current sinking, and 30kW autoranging power in a 4U 19‑inch rack enclosure. Featuring energy recovery up to 96.5%, active PFC, an LED status panel, and built‑in analog/USB/Ethernet interfaces with optional CAN, Profibus, ProfiNet, and more, they are expertly designed as power units for master‑auxiliary systems, enabling scalable, high‑density DC load solutions for battery cycling, power supply burn‑in, and industrial testing.

Model

PUL 10080-1000, PUL 10200-420, PUL 10360-240, PUL 10500-180, PUL 10750-120, PUL 10920-125, PUL 11000-80, PUL 11500-60, PUL 12000-40

DC Input Power (Max/Derated)

30000W / 18000W

DC Input Voltage (CV Range)

0-80V, 0-200V, 0-360V, 0-500V, 0-750V, 0-920V, 0-1000V, 0-1500V, 0-2000V

DC Input Current (CC Range)

0-40A, 0-60A, 0-80A, 0-120A, 0-125A, 0-180A, 0-240A, 0-420A, 0-1000A

AC Input

208-480V AC, 3ph (active PFC)

Type

Programmable Regenerative DC Electronic Load

External Control

Analog, USB, Ethernet, Optional CAN, Optional CANopen, Optional RS232, Optional Profibus, Optional ProfiNet, Optional ModBus TCP, Optional EtherCAT

Housing

19" 4U Rackmount

Special Features

Regenerative Energy Recovery up to 96.5%, Autoranging, LED Status Panel (no TFT), Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI, ModBus RTU, Optional Water Cooling

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Description

Model Overview – All Values

Model	DC Input Power (Max/Derated)	DC Input Voltage (CV Range)	DC Input Current (CC Range)	AC Input (Active PFC)	Type	External Control	Housing	Special Features
PUL 10080-1000	30000W / 18000W	0-80V	0-1000A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 95.5%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 10200-420	30000W / 18000W	0-200V	0-420A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 95.3%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 10360-240	30000W / 18000W	0-360V	0-240A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 95.8%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 10500-180	30000W / 18000W	0-500V	0-180A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 96.5%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 10750-120	30000W / 18000W	0-750V	0-120A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 96.5%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 10920-125	30000W / 18000W	0-920V	0-125A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 96.5%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 11000-80	30000W / 18000W	0-1000V	0-80A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 95.8%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 11500-60	30000W / 18000W	0-1500V	0-60A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 96.5%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling
PUL 12000-40	30000W / 18000W	0-2000V	0-40A	208-480V AC, 3ph	Programmable Regenerative DC Electronic Load	Analog, USB, Ethernet (Optional: CAN, CANopen, RS232, Profibus, ProfiNet, ModBus TCP, EtherCAT)	19" 4U Rackmount	Regenerative Energy Recovery up to 96.5%, Autoranging, LED Status Panel, Master-Auxiliary Bus (up to 64 units), Share-Bus, Remote Sense, SCPI & ModBus RTU, Optional Water Cooling

30-Second Fit Check

Need a scalable, high-power DC load without the cost of an integrated display? Models cover 80V to 2000V, sinking current up to 1000A.
DC input power: 30kW per unit (derated to 18kW at 208V AC) with fully autoranging and regenerative energy recovery up to 96.5%.
Designed as a power unit for master-auxiliary systems; a single master (with display) can control multiple PUL units, reducing total system cost.
Status indication via six colored LEDs; no TFT display – configuration and setpoints are managed by the master or via remote control.
Comprehensive protection: OVP, OCP, OPP, OT, PF, MAP, SF; Share bus and master-auxiliary bus for parallel connection of up to 64 units.

What It Is + Why It Matters

Cost-optimized regenerative DC electronic load in 4U 19" rack format, specifically designed as an auxiliary (slave) unit to extend the power of a master device (e.g., from the PSB 10000 or ELR 10000 series).
The autoranging input stage allows maximum current absorption at lower voltages or maximum voltage at lower currents, covering a wide range of test scenarios with a single model.
Energy consumed is regenerated to the grid with up to 96.5% efficiency, significantly reducing cooling costs and electrical consumption compared to passive loads.
Multiple units can be combined via the built-in Master-Auxiliary bus and Share bus to form a single, high-power load system of up to 1920kW, with the master handling all setpoints and measurements.
For standalone or backup use, the device can be configured via the front USB port and a simple SCPI/ModBus command set, serving as a temporary master in a remote-controlled system.

Note: The PUL 10000 series does not include a function generator or battery test mode; these features are provided by the master unit if required. In sink mode, ensure compliance with local grid regulations for energy feedback.

Key Specs

AC input: 208-480V AC, 3-phase, active PFC, 45-65Hz; automatic derating to 18kW at 208V AC.
DC input voltage: 0-80V up to 0-2000V; DC input current: 0-40A up to 0-1000A.
DC input power: 30kW autoranging; energy recovery efficiency up to 96.5%.
Control panel: 6 LEDs (Power, Remote, Error, CC, On, Off) and 1 DC on/off pushbutton; no TFT display.
Interfaces: 15-pin analog (0-5/10V), USB-B (rear), USB-A (front), Ethernet; optional slot for IF-AB digital modules (CAN, Profibus, etc.).
Master-auxiliary bus (RS485 via RJ45) + Share bus (BNC) for up to 64 units (1920kW total).
Dimensions (WxHxD): 19" x 4U x 668mm; Weight: approx. 50 kg (air-cooled), 56 kg (water-cooled).

Integration & Installation

DC input via copper busbars (M10 or M6 bolts) on the rear panel; plastic covers and strain relief accessories included.
Three-phase AC mains via 5-pole connector (L1, L2, L3, N, PE); fixed connection required with external circuit breaker/contactor.
Master-auxiliary bus connection via standard CAT5 patch cables; share bus via BNC coaxial cables (50Ω).
Optional water cooling available for reduced ambient noise and better heat management in high-density cabinets.
Must be installed in a closed 19" rack/cabinet with lockable doors; ensure adequate ventilation or water supply for cooling, and consult grid regulations for energy recovery.

Best for / Not for

Best for: Building large-scale, cost-efficient master-auxiliary load systems (e.g., battery pack discharge, power supply burn-in, fuel cell testing) where the master provides the interface and the PUL units supply raw sinking power.
Not for: Applications requiring a standalone load with an integrated display and function generator; series connection of DC inputs (not permitted); operation without a compatible master unit for full functionality.

Selection Checklist + RFQ

Choose voltage/current model matching your source specifications (80V, 200V, 360V, 500V, 750V, 920V, 1000V, 1500V, or 2000V).
Confirm total sinking power requirement ≤ 30kW per unit; note derating to 18kW at 208V AC input.
Verify three-phase AC supply (208-480V) and plan for external switching and grid compliance for energy recovery.
Select cooling option: standard forced air or optional water cooling (for reduced noise and heat emission).
For multi-unit systems, order the appropriate number of PUL units plus one compatible master unit (e.g., ELR 10000 4U or PSB 10000 4U series) to complete the system.
If optional digital interfaces (Profibus, EtherCAT, etc.) are needed, specify the corresponding IF-AB module.