One Fan SKU for Every Market: The 100-240V Argument

What the OEM was replacing

Initially an OEM wanted to modernise the cooling in an industrial product line, at roughly 1,500 units a year. In the end a universal voltage fan is what they got.

Usefully they sent the datasheet for the fan being replaced. Consequently this was a form, fit and function job with a fixed baseline.

What was fixed

• First, a 172 by 152 by 51 mm frame, a common enclosure cooling size.
• Next, IP55, which points at factory floors, control cabinets or outdoor telecom housings.
• Meanwhile the incumbent ran at 4000 RPM delivering roughly 289 CFM.
• Finally, a wide-ranging AC input, since the equipment sells into several markets.

Notably one detail in their attachment gave away the real intent. The file was named for an EC fan, even though the datasheet enclosed was for an AC one. They wanted to move off legacy AC motor technology, not simply find another AC fan.

Why a universal voltage fan changed the maths

Certainly a like-for-like AC replacement was the obvious move. Even so, we rejected it.

It would have matched the datasheet and missed the point. Their objective was modernisation, whereas an AC fan delivers none of the efficiency, life or control benefits behind that.

Matching the baseline

The chosen EC model fits the same 172 by 152 by 51 mm frame, delivering 305 CFM against the incumbent 289. Meanwhile it runs at the same 4000 RPM on 31W.

Here the frame is die-cast aluminum with a UL94V-0 PBT impeller. Furthermore dual ball bearings support a 70,000-hour L10 life, which is where the reliability argument lives.

The benefit they had not asked for

Notably this universal voltage fan accepts 100 to 240 VAC.

Previously they used a dual-voltage AC fan. So two variants had to be specified, stocked, picked and shipped depending on destination market.

A universal voltage fan collapses that to one part number. Consequently the saving is not in the fan price at all. It is in carrying one SKU instead of two across purchasing, inventory, documentation and service parts.

Notably that benefit rarely appears in a quotation comparison. On 1,500 units a year across several markets it is worth more than the unit price difference.

What it cost

Purchase price. An EC motor with integrated electronics costs more than the shaded-pole or PSC motor it replaces.

However, it is repaid through part-load energy, longer bearing life and the SKU consolidation. On a line running continuously that arithmetic is comfortable. By contrast, on equipment used occasionally it is much closer, and worth calculating rather than assuming.

Technical Specifications

Note the operating voltage row below. That range is what removes a second part number.

Parameter	Value
Model Number	LWAE17251SH-03-11
Dimensions	172 x 152 x 51 mm
Rated Voltage	220 VAC
Operating Voltage	100.0-240.0 VAC
Input Power	31 W
Input Current	0.3 A
Speed	4000 RPM (±10%)
Maximum Air Flow	305.29 CFM / 518.7 m³/h
Maximum Air Pressure	28.92 mm H₂O / 283.6 Pa
Acoustical Noise	67 dBA
Protection Type	IP55
Insulation Type	UL:CLASS A
Bearing Type	Two Ball Bearings
Life Expectancy	70,000 Hours (at 25°C, 15~65%RH)
Operating Temperature	-10°C to +60°C
Weight	740 g
Frame Material	Aluminum PLASTIC UL:94V-0
Impeller Material	PBT Plastic UL:94V-0

Technical Documentation

The product image shows the final LWAE17251SH-03-11 fan, which an OEM procurement manager would use for visual verification.

LWAE17251SH-03-11 Specification Sheet (PDF)
Here the final, approved specification sheet contains all electrical and mechanical performance data an HVAC engineer needs for system integration.

Customer Requirement Document (Reference)
This reference document shows the original competitor fan data used to define the project scope, useful for quality engineers comparing the old and new solutions.

If you sell into several markets

A universal voltage fan is an underrated specification when a product sells into more than one market.

• Count your SKUs, not just your fan price. A universal voltage fan removes a variant from purchasing, stores, documentation and spares. That cost is spread across departments, which is exactly why it gets left out of a price comparison.
• Say which markets the product ships to. A supplier who knows you sell into both 115V and 230V regions can propose a single part. One who only sees a 230V requirement will quote a 230V fan.
• Check the IP rating covers where the fan sits. IP55 resists dust and low-pressure jets, which suits a factory floor or an outdoor housing. Inside a clean sealed cabinet it is more than needed, and it costs more.
• Send the incumbent datasheet when replacing. It fixes the baseline precisely: frame size, speed, airflow and mounting. A replacement judged against a real datasheet is far more likely to drop in without surprises.

See our axial fan range, the EC axial fan section, or compact cooling fans. Ingress ratings follow IEC 60529.

Questions about this replacement

What does a universal voltage input actually save?

A part number. Instead of stocking a 115V and a 230V variant, purchasing orders one, stores holds one, and service ships one. On a product sold into several regions that removes duplicated effort across departments, which usually exceeds the price difference on the fan itself.

Does the fan perform the same at 115V and 230V?

Yes, within its rated range. The EC controller regulates to the commanded speed rather than following the supply, so airflow is the same at either end. That is the difference from an AC motor, whose speed depends directly on supply frequency and voltage.

Is 70,000 hours realistic?

It is an L10 rating at 25C and controlled humidity, meaning 90% of a large batch are expected to still run at that point. Real life depends on your ambient temperature and duty cycle. Treat it as a comparison basis against the fan you are replacing rather than as a promise.

When would an AC replacement have been the right answer?

Where the equipment runs briefly and rarely, where there is no interest in speed control, and where purchase price dominates. In that case the EC premium is not repaid. This customer ran continuously and wanted modernisation, which reverses the calculation.