The Bolt Connection Single-Phase AC 220V EMI Purification Power Filter is a critical component designed to safeguard your electrical systems from disruptive electromagnetic interference. Engineered specifically for single-phase power networks, the CW4-S and CW4E-S series provide exceptional noise suppression, ensuring that both industrial and commercial equipment operate smoothly without signal degradation. By integrating this power filter into your control panels or device chassis, you can effectively mitigate procurement risks associated with equipment malfunction, unexpected downtime, and compliance issues.
Features and Benefits
This series of EMI power filters is designed with practicality and long-term reliability in mind, offering significant advantages for system integrators and equipment manufacturers:
Compact Size and Easy Installation: Engineered with a highly space-saving footprint, this EMI power filter allows for fast, straightforward, and secure chassis mounting. This compact design significantly reduces installation time, lowers labor costs, and optimizes the internal layout within crowded electrical control panels or equipment enclosures.
Versatile Bolt Terminal Connections: Featuring robust and reliable bolt connection styles, the filter ensures secure electrical contacts even in environments subject to vibration. This stable connection minimizes maintenance requirements, reduces contact resistance, and enhances overall system safety during continuous operation.
Superior EMI and RFI Suppression: Delivers excellent conducted attenuation performance alongside highly effective surge pulse protection. By actively suppressing radio frequency interference (RFI) and electromagnetic interference (EMI), it protects sensitive downstream components, microprocessors, and sensors from power grid fluctuations, voltage spikes, and high-frequency noise.
Typical Applications
This single-phase AC 220V EMI filter is highly versatile and suitable for a broad spectrum of demanding environments where power quality is essential:
Electrical and Electronic Equipment: Provides clean, purified power to general industrial electronics, power supplies, and test instruments. It ensures stable operation and significantly reduces the risk of malfunction or inaccurate readings caused by power line noise.
Medical and Household Equipment: Ideal for sensitive medical diagnostic devices, patient monitoring systems, and advanced smart home appliances. Maintaining strict signal integrity and minimizing electromagnetic emissions are critical in these applications to ensure patient safety and device reliability.
Automation and Datacom Systems: Highly recommended for industrial automation controllers (PLCs), robotics, data communication networks, and electronic data processing equipment. The filter helps prevent data packet loss, communication errors, and unexpected system resets by filtering out disruptive high-frequency interference from the mains supply.
Technical Specifications
Understanding the technical parameters is essential for proper component selection. The CW4 series is built to meet rigorous industry standards, offering a wide selection of current ratings to accommodate various load capacities. The robust dielectric strength and wide operating temperature range ensure that the filter performs reliably even in demanding thermal conditions.
Maximum Continuous Operating Voltage: 250VAC
Operating Frequency: 50/60Hz
Rated Currents: 3A – 40A @ 40℃ Max
High Potential Test Voltage (1 min): Line to Line 1500VDC / Line to Ground 1500VAC
Operation and Storage Temperature Range: -25℃ ~ +85℃ (Climatic category 25/085/21)
Model Matrix & Specifications
Please refer to the detailed model matrix below to select the appropriate single-pole or bipolar configuration and the required current rating for your specific application needs.
| Schematic diagram | Model | Specs | Current |
 | CW4-3A-S | bolted single pole | 3A |
| CW4-6A-S | 6A |
| CW4-10A-S | 10A |
| CW4-20A-S | 20A |
| CW4-30A-S | 30A |
| CW4L2-3A-S | bolted bipolar | 3A |
| CW4L2-6A-S | 6A |
| CW4L2-10A-S | 10A |
| CW4L2-20A-S | 20A |
| CW4L2-30A-S | 30A |
 | CW4E-3A-S | bolted single pole | 3A |
| CW4E-6A-S | 6A |
| CW4E-10A-S | 10A |
| CW4E-20A-S | 20A |
| CW4E-30A-S | 30A |
| CW4E-40A-S | 40A |
| CW4EL2-3A-S | bolted bipolar | 3A |
| CW4EL2-6A-S | 6A |
| CW4EL2-10A-S | 10A |
| CW4EL2-20A-S | 20A |
| CW4EL2-30A-S | 30A |
For comprehensive performance curves, dimensional drawings, and further technical documents, please refer to the dedicated datasheet section in the adjacent tab.
