Delta EFB1524VHG Cooling Fan — 24V DC, 1.7A, 150×172×51 mm

Delta Electronics · EFB Series · DC Axial Fan · In stock

The Delta EFB1524VHG is a high-static-pressure 24V DC axial cooling fan from Delta Electronics, rated at 1.7 A continuous draw and engineered for long-life forced-air cooling inside industrial cabinets, inverter and drive enclosures, CNC controllers and PLC racks. With a 150 × 172 × 51 mm aluminium frame, dual ball bearings and a locked-rotor / reverse-polarity protected design, the EFB1524VHG is a drop-in replacement for the EFB1524SHG / EFB1524HHG and is widely specified by OEM panel builders and field-service technicians who maintain legacy Allen-Bradley PowerFlex, Siemens Sinamics and Mitsubishi MR-J4 equipment. The fan is in stock at KOEED and ships worldwide with a 24-hour quotation turnaround.

Key Specifications

Datasheet Highlights

• VHG = High Static Pressure profile. The EFB1524VHG sits in the upper band of Delta's 24 V EFB family, optimised to push air through restrictive heat sinks, finned heatsinks on IGBT modules, and densely populated control boards. Compared with the EFB1524SHG (standard pressure) and EFB1524HHG (high speed), the VHG version typically delivers a higher back-pressure curve at the cost of slightly higher acoustic output.
• Dual ball-bearing construction. Two shielded ball bearings extend service life well beyond sleeve-bearing equivalents and tolerate higher operating temperatures and tilt / vibration, which is why the EFB1524VHG is selected for horizontally mounted drive enclosures and rail-mounted cabinets subject to plant vibration.
• Locked-rotor & reverse-polarity protection. Internal current-limit and auto-restart circuitry means a stalled blade (trapped debris, failed bearing) will not burn the windings; reversed 24 V hook-up at the terminal block will not destroy the motor. This is the key safety feature for a fan wired directly to a 24 V rail in a power supply or drive.
• Wide operating envelope. −10 °C to +70 °C continuous duty makes the EFB1524VHG suitable for outdoor control cabinets (with proper sealing), cold-storage conveyor panels, and high-ambient paint-line cells where many generic 40 mm fans would derate or fail.
• Signal & speed-control variants. Delta offers the EFB1524VHG family in 2-wire (V+ / V−), 3-wire (with tachometer / FG output for health monitoring) and 4-wire (PWM speed control + tach) variants — quote the exact dash number on your existing fan or on the host equipment's BOM to ensure pin-out compatibility.
• Aluminium frame, UL94V-0 impeller. The metal chassis acts as a heat spreader and provides a robust mounting plane; the PBT impeller is rated UL94V-0 for flame retardancy, which is required by many OEM panel builders and UL508A cabinet integrators.

Typical Applications

The EFB1524VHG is a workhorse 24 V cabinet-cooling fan used wherever a mid-power industrial enclosure needs forced-air heat removal. The most common KOEED cross-reference requests come from engineers maintaining the following equipment lines:

• Variable-frequency drives & inverters. Cooling the heat-sink tunnel of Allen-Bradley PowerFlex 525 / 755, Schneider Altivar ATV320 / ATV630, Siemens Sinamics V20 / G120 / V90, and Yaskawa V1000 / A1000 drive chassis, where a 24 V auxiliary rail powers the internal fan.
• Servo amplifiers & motion controllers. Top-mounted fan in Mitsubishi MR-J4 / MR-J5, Yaskawa Sigma-7, Panasonic Minas A5/A6, and Allen-Bradley Kinetix 5700 servo packs. The same chassis appears in many Fanuc CNC servo amplifier boxes.
• CNC controllers. Forced-air cooling inside Fanuc 0i-MD / 30i-B operator panels, Fanuc Robocut EDM cabinets, and Siemens Sinumerik 808D / 828D controller back-planes.
• PLC & HMI racks. Roof-mounted exhaust fan in Allen-Bradley ControlLogix (1756) chassis cabinets, Siemens SIMATIC S7-1500 / ET200MP cubicles, and Omron NJ / NX control panels where heat rejection from the CPU and I/O backplane is required to keep the ambient under 55 °C.
• Industrial welding machines. Inverter-based MIG / TIG welders and plasma cutters from Lincoln, Miller, ESAB and their Asian OEM equivalents use 24 V high-static fans to push air through the IGBT stack — the EFB1524VHG is a common drop-in for the OEM Delta / Sanyo Denki / Nidec assembly.
• Power supplies, UPS & battery chargers. 24 V / 48 V industrial DC power systems and telecommunication rectifiers where the fan is sized to the heat-sink thermal budget.
• General enclosure ventilation. Any IP54 / NEMA-12 floor-standing control panel that needs a single high-flow 150 mm exhaust or intake fan, including HVAC, water-treatment SCADA panels and packaging-machine cabinets.

Related Modules & Cross-Reference

The Delta EFB1524VHG is most often sourced as a maintenance replacement for the part numbers below. All are stocked by KOEED as part of our multi-brand industrial-automation spares catalogue and can be quoted on the same BOM as the host drive or controller.

Drives & controllers that the EFB1524VHG typically cools (KOEED cross-reference):

• Allen-Bradley PowerFlex 525 & 755 frame 2–4 drives (RoHS / CE)
• Schneider Altivar ATV320 / ATV630 compact drives
• Siemens Sinamics V90 & G120C servo / converter chassis
• Mitsubishi MR-J4-100A / MR-J4-200A servo amplifiers
• Yaskawa V1000 (CIMR-VU) & A1000 drives
• Omron R88D-1SN / 1SH Accurax servo packs
• Panasonic Minas A5 / A6 (MSDA5A / MSD5A) servo amplifiers
• Fanuc A06B-6089 / A06B-6102 servo amplifier modules
• KEYENCE CV-5000 / XG-8000 vision-system controller chassis

Warranty & Authenticity

• Original Delta Electronics component. Every EFB1524VHG supplied by KOEED ships as a factory-fresh part with intact Delta label, batch code and UL / cUL / TÜV / CE marking. We do not relabel, remark or repackage third-party fans as Delta.
• Pre-shipment inspection. Visual bearing check, free-current and locked-rotor current measurement, and a 60-second run-in audit on every unit before pack-out — consistent with the KOEED China sourcing QC workflow.
• Worldwide shipping. DHL, FedEx, UPS and standard air freight from Hong Kong / Shenzhen with full commercial invoice, packing list and HS-code declaration for smooth customs clearance in North America, EU, Middle East, South-East Asia and South America.
• 24-hour quotation. Send the BOM line for the EFB1524VHG (and any controllers, drives or HMI in the same panel) and we will respond with availability and tiered pricing on the next business day.
• Hard-to-find & EOL specialists. KOEED keeps active and discontinued Delta fan part numbers side-by-side for legacy panel repairs — quote any EFB / FFB / ASB / BFB / PFB family part number on the same BOM and we will cross-reference it.