Agricultural machine

Karl Barth AG Ventomat Typ SE-1-100-4p

Dry hay, biomass, or a drying container with an air volume that you set yourself, instead of running a fan at full speed and paying for it.

This Karl Barth AG Ventomat SE-1-100-4p was purchased in December 2025 and used for approximately four months. It operates perfectly and is offered as a complete, ready-to-use system, not just the fan: it includes a factory-configured 5.5 kW Invertek Optidrive E3 frequency inverter with disconnect switch, duct cone and reduction, plus a free 10m Ø400mm fabric hose. The original purchase price was approximately CHF 8,507.

Only one unit is available – sold as a complete set with the inverter, ducting accessories, and hose. Once sold, it's gone.
Best for: hay drying, biomass drying, drying containers, and agricultural ventilation where you want to control air volume rather than running at full speed.
Not suitable for: corrosive or heavily dust-laden air streams, or ATEX zones unless independently verified.

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What the specifications mean in practice:
• 5.5 kW motor, 4 kW rated fan output – sized for continuous hay/biomass drying, not short bursts.
• Factory-configured Invertek Optidrive E3 inverter – set the air volume to match the crop and its moisture content, reducing energy consumption.
• Inverter in IP66/NEMA4X housing with disconnect switch – can be mounted in a dusty barn without a separate control cabinet.
• Duct cone 222/563 to D400mm and D750/D600mm reduction – connects to existing ducting, eliminating the need for custom fabrication.
• 10m Ø400mm flexible fabric hose included – place the fan where it fits, and duct air where needed.
• Painted sheet metal, single-suction Swiss-made (Karl Barth AG) – serviceable and locally supported.

The complete package includes: Ventomat fan, Invertek Optidrive E3 5.5kW inverter with disconnect switch, duct cone 222/563 to D400, duct reduction D750/D600 with flange ring, and a 10m Ø400mm fabric hose, all at no extra charge. Purchasing/configuring the inverter alone is a significant separate expense.
Technical data:
– Manufacturer: Karl Barth AG, Dättlikon (CH)
– Type: Ventomat SE-1-100-4p
– Rated output: 4kW
– Motor: 5.5kW, 4-pole
– Construction: Painted sheet metal, single-suction
– Inverter: Invertek Optidrive E3, ODE-3-340140-3F4B, 5.5kW, IP66/NEMA4X
– Inverter input: 380-480V, 3-phase, 17.2A
– Inverter output: 0-480V, 3-phase, 14.0A, 7.5HP
– Duct connection: 222/563mm to D400mm, plus D750/D600mm reduction

Condition: Barely used (~4 months), technically flawless, fully functional. New price (Dec 2025) CHF 8,507.45 incl. VAT.
Location: Stanserstrasse 50, 6064 Kerns (self pick-up; transport can be arranged).
Buy with confidence: purchased in Dec 2025, used for ~4 months for hay drying/drying container, technically flawless. The inverter can be demonstrated running under load; photos of the nameplate and a video of it running are available. In-person inspection in Kerns OW by appointment.

Why buy now: near-new, factory-configured Swiss unit sold as one complete set – fan, inverter, cone, reduction, and hose stay together. Once sold, this configuration will not be available again at this price.

First-buyer bonus: free functional test with the inverter under load, plus loading assistance, at no extra cost. Valid until October 10, 2026, or until sold.

Action: send your intended application, required capacity, and destination – we'll confirm suitability and provide a transport estimate.

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