Schaffner EMC Inc

RT Series Current-Compensated Chokes

Schaffner EMC RT series are common-mode, current-compensated chokes up to 20 A

Image of TE Connectivity RT Series Current-Compensated Chokes Schaffner EMC RT common-mode chokes are mainly used to filter EMI noise on AC power lines up to 600 VAC. EMI noise of electronic equipment can go to the power lines and disturb the proper function of other devices like communication devices or control logic of robotics. Thus, noise generated by the equipment from switched power electronics or by high slew rates of controllers needs to be filtered. RT common-mode chokes are used to suppress EMI noise in PCB integrated filter designs with line bypass capacitors or in combination with single phase filters for extra low leakage filter designs.

Features
  • Rated currents from 6 A to 85 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
  • Ferrite core technology
  • Cost-effective PCB designs for up to 135 A with forced cooling*
  • EIS (electrical insulation system E332676) for currents > 20 A acc. to UL 1446
  • Compact size and lightweight
  • Low magnetic leakage flux
  • Excellent winding insulation
  • Standardized footprint
  • Broad range of inductance ratings
  • Custom-specific versions on request
Technical Specifications
  • Rated currents: 6 A to 85 A @ +60°C
  • Operating frequency: DC to 400 Hz
  • Creepage and clearance distances:
    • 2-line: ≥ 3.5 mm (coil-coil)/≥ 3.0 mm (coil-core)
    • 3-line: ≥ 6.3 mm (coil-coil)/≥ 5.5 mm (coil-core)
  • High potential test voltage: 3 kVDC 3 s (coil-to-coil) repetition with max. 80% of the HV test voltage
  • Rated inductance: 0.2 mH to 6 mH (3-line); 0.4 mH to 10 mH (2-line)
  • Operating voltage: 300 VAC/425 VDC (2-line); 600 VAC (3-line)
  • Overvoltage category: III (acc. IEC 60664-1)
  • Pollution degree: PD2 (acc. IEC60664-1)
  • Stray inductance: Max. 1% of rated inductance (@ 100 kHz 1 V, 0 A)
  • Temperature range (operation and storage): -40°C to +100°C (6 A to 20 A)/-40°C to +125°C (25 A to 63 A)
  • Climatic category: 40/100/56 (acc. IEC 60068-1) (6 A to 20 A) / 40/125/56 (acc. IEC 60068-1) (25 A to 63 A)
  • Altitude: 2,000 m, current and voltage derating above
  • Flammability corresponding to: UL 94 V-0
  • Vibration and shock: 3M4 (acc. IEC 60721-3-3)
  • Design corresponding to: UL/IEC 60938-1/-2; UL1446 (>20 A)
  • MTBF (Mil-HB- 217F): >2,000,000 h @ +60°C/300 V
Applications
  • AC and DC filtering for midsize power range drives, photovoltaic inverters, fast chargers, EV charging stations, heat pumps, 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
  • Converters

* Typical current for forced cooling with 3 m/s. Due to the possible turbulences and degradation of the air stream within an equipment please consider thermal validation.

Horizontal 2-Line

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CMC 10MH 6A 2LN THRT8122-6-10M0CMC 10MH 6A 2LN TH126 - Immediate$182.66View Details
CMC 8MH 8A 2LN THRT8122-8-8M0CMC 8MH 8A 2LN TH110 - Immediate$192.54View Details
CMC 5MH 12A 2LN THRT8122-12-5M0CMC 5MH 12A 2LN TH110 - Immediate$207.27View Details
CMC 6MH 10A 2LN THRT8122-10-6M0CMC 6MH 10A 2LN TH90 - Immediate$195.83View Details
CMC 4MH 16A 2LN THRT8122-16-4M0CMC 4MH 16A 2LN TH84 - Immediate$223.21View Details

Vertical 2-Line

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CMC 10MH 6A 2LN THRT8522-6-10M0CMC 10MH 6A 2LN TH59 - Immediate$179.89View Details
CMC 8MH 8A 2LN THRT8522-8-8M0CMC 8MH 8A 2LN TH135 - Immediate$189.42View Details
CMC 6MH 10A 2LN THRT8522-10-6M0CMC 6MH 10A 2LN TH170 - Immediate$198.95View Details
CMC 4MH 16A 2LN THRT8522-16-4M0CMC 4MH 16A 2LN TH90 - Immediate$235.34View Details
VERTICAL 32 A PCB TWO LINE COMMORT8522-32-1M5VERTICAL 32 A PCB TWO LINE COMMO56 - Immediate$266.54View Details

Horizonal 3-Line

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CMC 3MH 16A 3LN THRT8132-16-3M0CMC 3MH 16A 3LN TH2 - Immediate
132 - Marketplace		$341.92View Details
CMC 4.8MH 8A 3LN THRT8132-8-4M8CMC 4.8MH 8A 3LN TH56 - Immediate$229.45View Details
CMC 4MH 10A 3LN THRT8132-10-4M0CMC 4MH 10A 3LN TH0 - Immediate
54 - Marketplace		$266.19View Details
CMC 3.6MH 12A 3LN THRT8132-12-3M6CMC 3.6MH 12A 3LN TH84 - Immediate$276.07View Details
CMC 2.5MH 20A 3LN THRT8132-20-2M5CMC 2.5MH 20A 3LN TH9 - Immediate$360.64View Details

Vertical 3-Line

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CMC 6MH 6A 3LN THRT8532-6-6M0CMC 6MH 6A 3LN TH0 - Immediate
64 - Marketplace		$223.21View Details
CMC 4.8MH 8A 3LN THRT8532-8-4M8CMC 4.8MH 8A 3LN TH21 - Immediate$235.69View Details
CMC 4MH 10A 3LN THRT8532-10-4M0CMC 4MH 10A 3LN TH38 - Immediate$263.24View Details
CMC 2.5MH 20A 3LN THRT8532-20-2M5CMC 2.5MH 20A 3LN TH39 - Immediate$360.64View Details
CMC 3.6MH 12A 3LN THRT8532-12-3M6CMC 3.6MH 12A 3LN TH68 - Immediate$273.64View Details
Updated: 2025-10-24
Published: 2018-03-27

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