Description
Used product. The ebm-papst DV6248/2 is an industrial DC axial/diagonal fan, designed for forced cooling of electrical and electronic equipment with high thermal dissipation.
The original nameplate shown in the photographs, clearly readable, provides the specific data for this unit:
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Model: DV 6248/2
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Nominal supply: 48 V DC
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Rated current: 770 mA
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Power: 37 W
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Supply range: 28…60 V DC
- RD = positive (+)
- BU = GND / negative
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WH = TACHO, tachometric output
- Var. 551
- ebm-papst St. Georgen – Germany
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Compliance markings: VDE, UL, CSA and CE
The TACHO signal makes this version particularly suitable for equipment that needs to monitor correct fan rotation and detect possible cooling-system anomalies.
⚙️ Technical Specifications
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Brand: ebm-papst
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Model: DV6248/2
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Type: Industrial DC axial/diagonal fan
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Nominal voltage: 48 V DC
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Supply range: 28–60 V DC
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Rated current: 770 mA
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Rated power: 37 W
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Speed signal: TACHO
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Positive supply: RD wire – Red
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Negative/GND: BU wire – Blue
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Tachometric signal: WH wire – White
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Bearings: Ball bearings
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DV6248 series dimensions: approximately Ø172 × 51 mm
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Frame: Aluminum
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Impeller: Glass-fiber-reinforced PA
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Motor protection: against reverse polarity and rotor lock
- Electronic stall protection
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Compliance: VDE, CSA, UL, CE
The ebm-papst documentation for the DV6248 family confirms the construction with an aluminum frame, glass-fiber-reinforced polyamide impeller, ball bearings, and electronic motor protection.
🔧 Operation
The DV6248/2 uses a DC motor with integrated commutation electronics and an impeller designed to provide high air-moving capacity even in the presence of a certain level of back pressure.
Operation at 48 V DC, with an allowed range of 28–60 V DC, allows integration into industrial systems supplied directly from DC buses.
The 3-wire connection provides the power supply together with the WH tachometric signal, which can be used to monitor fan speed.
⚡ Electrical Connections
The nameplate clearly identifies the function of the wires:
RD = + / positive power supply
BU = GND / negative power supply
WH = TACHO / tachometric signal
The connection must be made while strictly observing the polarity specified by the manufacturer.
🏭 Construction & Applications
The robust aluminum construction and reinforced plastic impeller make the DV6248/2 suitable for industrial equipment requiring continuous cooling, mechanical reliability, and ventilation monitoring.
Possible applications include:
- Inverters and power converters
- UPS and power supply systems
- Electrical switchboards
- Industrial electronic cabinets
- Power supplies and DC equipment
- Automation systems
- Power electronics
- Industrial systems with forced cooling
- Equipment requiring fan tachometric monitoring
🛡️ Product Condition
The fan is used and shows normal signs of use, dust, and light superficial marks visible in the photographs. The impeller, frame, and motor housing appear visually intact, with no obvious structural breaks.
The component is not declared electrically tested based on the photographs alone. Before installation, it is recommended to check 48 V DC supply, current consumption, rotation, bearing noise, and correct operation of the TACHO signal.
📦 Package Contents
The sale includes:
- 1 × ebm-papst DV6248/2
- 48 V DC – 37 W fan
- Wiring with connector
- TACHO tachometric output
🚀 Final Description
The ebm-papst DV6248/2 is a professional 48 V DC industrial fan, featuring 37 W power, 770 mA current, 28–60 V DC supply range, and a tachometric output. Its construction with an aluminum frame, reinforced impeller, and ball bearings, together with electronic protection against reverse polarity and rotor lock, makes it particularly suitable as a replacement for inverters, UPS systems, converters, electrical switchboards, and power electronics.
