RT seriesRT series

Common Mode Chokes RT series

Current-compensated Chokes

RT series

Current-compensated Chokes

  • Rated currents from 6 to 20 A
  • Up to 600 VAC and VDC
  • 2- and 3-wire configurations
  • Horizontal and vertical PCB mounting types
  • Ruggedized saturation and thermal behavior
  • Open construction for forced and convection cooling
  • Straightforward pin-out for easy PCB design

Features and Benefits

Cost-effective PCB designs for up to 32 A with forced cooling *
Compact size and light weight
Low magnetic leakage flux
Excellent winding insulation
Standardized foot print
Broad range of inductance ratings
Custom-specific versions on request

Typical Applications

AC and DC filtering for midsize power range drives, photovoltaic inverters, fast chargers, EV charging stations, UPS and switch mode power supplies
Filter with low leakage current noise or improved immunity against grid disturbances
Electronic devices, automation and (industrial) LED lighting
Communication devices
Medical and laboratory Equipment

Technical Specifications

Rated currents

16 to 63 A @ 60°C

Rated inductance

0.3 to 6 mH (3-line)

0.5 to 10 mH (2-line)

Stray inductance

Max. 1% of rated inductance (@ 100 kHz 1 V, 0 A)

High potential test voltage

3 kV DC 3s (coil to coil)

Repetition with max. 80% of the HV test voltage

Temperature range (operation and storage)

-40°C to +100°C (6 to 20 A) / -40°C to +125°C (25 to 63 A)

Climatic category

40/100/56 (acc. IEC 60068-1) (6 to 20 A) / 40/125/56 (acc. IEC 60068-1) (25 to 63 A)

Design corresponding to

UL/IEC 60938-1/-2

Overvoltage category

III (acc. IEC 60664-1)

Creepage and clearance distances

Creepage & Clearance (2-line): ≥ 3.5 mm (Coil - Coil) / ≥ 3.0 mm (Coil-Core)

Creepage & Clearance (3-line): ≥ 6.3 mm (Coil - Coil) / ≥ 5.5 mm (Coil-Core)

Pollution degree

PD2 (acc. IEC60664-1)


2000 m, current and voltage derating above

Vibration and shock

3M4 (according IEC 60721-3-3)

Flammability according to

UL 94 V0


>2'000'000 h (MIL-HDBK-217)

Operating voltage

600 VAC (3-line)

300 VAC/425 VDC (2-line)

Operating frequency

DC to 400 Hz

Typical electrical schematic

RT series

Approvals & Compliances

RoHS Label