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Product Detailed Parameters
- Description：LINE FILTER 250VAC/VDC 20A DIN
- Series：NBM
- Mfr：Cosel USA, Inc.
- Package：Box
- Filter Type：Single Phase
- Configuration：Two Stage
- Voltage - Rated DC：250V
- Voltage - Rated AC：250V
- Current：20 A
- Frequency - Operating：-
- Applications：General Purpose
- Approval Agency：cURus, VDE
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：DIN Rail
- Termination Style：Terminal Block
- Inductance：-
- Voltage - Rated AC (Phase to Ground/Neutral)：250 V
- Voltage - Rated AC (Phase to Phase)：-
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Overview
The Cosel NBM-20-471-D is a single-phase power line filter designed for AC 1-250 V and DC 250 V applications. It supports a continuous current rating of 20 A with a capacitance value of 470 pF. The device features low leakage current specifications, typically 50 uA or 100 uA maximum. It utilizes push-down terminal connections for secure wiring and is engineered for DIN rail mounting style. This component belongs to the NB series and is classified as a low leakage current filter within the power condition sub-category.
Feature Summary
- Engineered as a low leakage current filter to minimize stray currents in sensitive systems
- Utilizes push-down terminal technology for rapid and secure electrical connections
- Designed for DIN rail mounting to facilitate standardized industrial panel integration
Applications
- Industrial control panels requiring low leakage safety compliance
- Medical equipment power supplies with strict isolation requirements
- Precision measurement instrumentation sensitive to ground currents
Procurement Notes
Verify the specific datasheet version for exact leakage current limits, as values may vary between 50 uA and 100 uA depending on test conditions. Confirm that the push-down terminal interface matches your existing wiring harness tools. Ensure the DIN rail profile is compatible with standard TS35/TS75 rails before installation planning.
Selection Notes
Select this model when a 20 A capacity is required alongside low leakage performance. Compare against NBM-20-331-D if lower capacitance is needed for different filtering characteristics. Verify that the 250 VAC/VDC rating aligns with your system voltage. Consider the NBM-20-101 if screw terminals are preferred over push-down types.
Part Context
This component is part of the Cosel NB series, which specializes in power line filters for various current ratings. The NBM-20-471-D specifically addresses the 20 A segment with high capacitance for effective noise suppression. It shares the same physical weight and general form factor as other units in the NBM-20 family, ensuring consistent mechanical design across the range.
Replacement Considerations
NBM-20-471 is a chassis mount variant with similar electrical ratings but different mounting hardware. NBM-20-331-D offers lower capacitance (330 pF) while maintaining the same current and mounting style.
