Dry Hay and Biomass with Adjustable Air

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

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

This Karl Barth AG Ventomat SE-1-100-4p was bought in December 2025 and used for only approx. four months. It runs perfectly and comes as a complete working setup, not just the fan: factory-configured 5.5 kW Invertek Optidrive E3 frequency inverter with disconnect switch, duct cone and reduction, plus a free 10m Ø400mm fabric hose. New purchase price approx. CHF 8,507.

Only one available - sold as one 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 run flat out.
Not suitable for: corrosive or heavily dust-laden air streams, or ATEX zones unless independently verified.

What the specs 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 air volume to the crop and its moisture, cutting energy use
• Inverter in IP66/NEMA4X with disconnect switch - mounts in a dusty barn without a separate control cabinet
• Duct cone 222/563 to D400mm and D750/D600mm reduction - connects to existing ducting, no custom fabrication
• 10m Ø400mm flexible fabric hose included - place the fan where it fits, duct air where needed
• Painted sheet metal, single-suction Swiss build (Karl Barth AG) - serviceable and supported locally

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 at no extra charge. Buying/configuring the inverter alone is a substantial separate cost.
Technical data:
– Manufacturer: Karl Barth AG, Dättlikon (CH)
– Type: Ventomat SE-1-100-4p
– Rated output: 4kW
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– 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 by arrangement).
Buy with confidence: purchased Dec 2025, used ~4 months for hay drying/drying container, technically flawless. Inverter can be demonstrated running under load; nameplate photos and a running video 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 won't return at this price.

Discount if you're quick: if you buy it till 31.10.2026, we give you a 500CHF discount on the price.

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