Roots vacuum pumps

Atlas Copco DRB VSD+ series

The Atlas Copco DRB VSD+ series at a glance: 2 models from the field of Roots vacuum pumps – with technical data, variants and the option to send an enquiry.

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  • 2Models
  • 1,500–3,000m³/h pumping speed at 50 Hz
  • 4–7.5kW rated motor power at 50 Hz
Operating principle: Roots vacuum pumps (schematic drawing)
Operating principle: Roots vacuum pumps

Product overview

Products of the Atlas Copco DRB VSD+ series

Each row leads to the model with its technical data and variants.

DRB 1500 VSD+Pumping speed 1,500 m³/h 50 Hz1,500 m³/h 60 HzRated motor power 4 kW 50 Hz4 kW 60 HzVariants 1
DRB 3000 VSD+Pumping speed 3,000 m³/h 50 Hz3,000 m³/h 60 HzRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 1

Spare parts and accessories for the DRB VSD+ models are listed under Atlas Copco spare parts and accessories.

About the series

Technology and features

Operating principle

Roots vacuum pumps, also known as vacuum boosters, belong to the dry-running vacuum pumps. Together with a backing pump they cover a wide range of applications in which high pumping speeds are required. The two Roots rotors operate entirely without contact and without sealing liquid in the pump chamber; on most models only the timing gears and bearings are oil-lubricated.

The technology page shows the operating principle with an interactive drawing: Roots vacuum pumps.

Features of the series

  • Operation via keypad, USB or Bluetooth; Modbus RTU as well as digital and analogue outputs for the plant control system
  • Speed adapts automatically to the load; overload and temperature protection in the controller
  • Variable-speed (VSD+) up to 80 Hz or 4800 rpm: high pumping speed in a compact size
  • Multi-pump control for easy system integration
  • Motor rotor inside the vacuum chamber: no oil-lubricated shaft seal between pump chamber and oil chamber, no risk of leakage
  • Vacuum relief valve as mechanical overload protection

Manufacturer's data as given in the product descriptions of the individual models.

Frequently asked questions

Questions about the Atlas Copco DRB VSD+ series

Which models does the Atlas Copco DRB VSD+ series comprise?
The Ehrler & Beck catalogue lists 2 models of the series. The product overview names each model with its key figures and the number of its variants; the model page shows the technical data.
Which pumping speeds does the series cover?
At 50 Hz the models cover pumping speeds from 1,500 to 3,000 m³/h. The figure comes from the product data of the individual models; values for 60 Hz, where available, are given in the product overview.
How does the technology of the series work?
The series belongs to the field of Roots vacuum pumps. The technology page explains the operating principle with an interactive drawing and names all series of this technology.
Does Ehrler & Beck supply spare parts and service for the Atlas Copco DRB VSD+ series?
Yes. Ehrler & Beck supplies the models of the series as well as spare parts and accessories and takes care of maintenance and repair. For a quotation, an enquiry with the model or part number is all it takes.

Which model fits your process?

Tell us the gas to be conveyed, the working pressure and the flow rate you need – we will advise you on selection, spare parts and service.

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