EMC filters ship with our VFDs for three types of sites. First and most common: any production floor sharing a building with offices, a clinic, or a lab. A VFD without a filter dumps high-frequency noise into the mains and breaks neighbor electronics. Second: machines in a line with PLCs and sensors nearby (microsecond spikes off the PWM bus enter analog ADC inputs and cause drift). Third: equipment exports to the EU where the EN 61800-3 declaration of conformity requires C1 or C2.

Not everyone needs one. A standalone industrial site with no neighbors, a simple pump-motor setup in a remote location with no sensitive electronics – C3 category is covered by the VFD's built-in filter. We ask the customer: where is the site, what sits nearby, which standards must you meet. If C1 (residential, medical, office), an external filter is mandatory, full stop. C2 (industrial with restrictions) – usually needed; we check the VFD datasheet. C3 (heavy industry) – the built-in is usually enough but not always.

What we ask before you order an EMC filter

First: VFD model and power. We size the filter to the inverter rated current with a 20% margin. Bosch Rexroth in our shop covers 0.4-160 kW for VFD EFC, FV, Fe G/P families. Second: three-phase or single-phase. 400 V three-phase (most industrial VFDs) – one line. 230 V single-phase (compact VFDs up to 2.2 kW) – another. Third: mounting. The filter must sit within 30 cm of the VFD power input. Beyond that the suppression drops to 50-60%.

Fourth: motor cable length. A VFD-to-motor cable over 30 m radiates noise like an antenna. At that point you also need a dV/dt filter on the output or a motor choke alongside the EMC filter. On 50-100 m cable runs without extra filtering the motor winding burns out in 1-2 years. We keep popular Bosch Rexroth ratings in stock for VFDs at 4 / 7.5 / 15 / 22 / 45 / 75 kW. Factory warranty 12-24 months. Ship from our Kyiv warehouse in 1-3 days. Filter sizing for your VFD model is free.

Model	VFD Power	VFD Series	Application
R912003314	0.4–2.2 kW	Bosch Rexroth FV	Small pumps, fans
R912003316	4.0–7.5 kW	Bosch Rexroth Fe G/P, FV	Conveyors, compressors
R912003318	15–22 kW	Bosch Rexroth Fe G/P, FV	Industrial pumps, HVAC
R912003320	45–55 kW	Bosch Rexroth Fe G/P, FV	Heavy-duty machinery
R912003329	75–90 kW	Bosch Rexroth FV	High-power drives, production lines

EMC Filter Manufacturers

Our catalog features external EMC filters from Bosch Rexroth — designed for EFC, FV, and Fe G/P series frequency converters from 0.4 to 160 kW. Bosch Rexroth filters comply with EN 61800-3 categories C1 and C3 and are rated for three-phase 400 V networks. For other VFD brands (Delta, Danfoss, Schneider Electric), filter selection is based on rated current and required filter class.

EMC Filters by Specifications

Select a filter by connected VFD power: from 0.4–2.2 kW for light-duty applications to 160 kW for heavy industrial installations. Single-phase filters (230 V) are designed for compact VFDs, three-phase (400 V) for most industrial drives. Filter class C1 provides maximum interference suppression for sensitive equipment, C3 offers a baseline level for industrial zones.

Warranty and Support

All EMC filters come with an official manufacturer warranty. Delivery across Ukraine: Kyiv, Kharkiv, Odesa, Dnipro, Lviv, and other cities. Our engineers will help you select the right filter based on your VFD parameters and operating conditions. Payment options: bank transfer with VAT for businesses, card payment or cash on delivery for individuals.