PFS-152 Single-Phase EMI Filter – Clean Up AC Mains Noise for Stable Industrial Control Power

The PFS-152 is typically used as a compact, single-phase, two-stage EMI/RFI mains filter, ideal for automation panels where servo drives, VFDs, switching power supplies, or sensitive PLC I/O need cleaner power. One thing I appreciate is how it balances strong attenuation with a small footprint, so you don’t have to redesign the entire enclosure just to meet EMC targets.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week for in-stock items; no more than one month at the latest
• Payment: 50% advance payment, full payment prior to delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• Two-stage attenuation – Better suppression of both common-mode and differential-mode noise, which in many cases is what gets you across the line in EMC testing.
• 15 A, 110–250 VAC rating – Suitable for most single-phase industrial panels feeding drives, motion controllers, or IPCs.
• Low profile housing – Saves rail and backplate space; easy to fit near the power entry point.
• Chassis or optional DIN-rail mounting – Gives flexibility for retrofit or new builds; I’ve seen both used depending on cabinet layout.
• PE grounding stud – Stable earth reference is key for high-frequency suppression; you might notice better repeatability in noisy environments.
• Touch-safe screw terminals – Straightforward line/load wiring with clear labeling to reduce installation mistakes.

Technical Specifications

Related or Supporting Products

• PFS-106 – 6 A, two-stage single-phase EMI filter for smaller PLC/drive loads; slimmer package.
• PFS-110 – 10 A rating; a common step-up if your PSU inrush is tripping lower-rated filters.
• PFS-325 – 25 A, two-stage version for heavier loads or multi-axis servo cabinets.
• Single-phase surge protector (SPD) – Often paired upstream for transient overvoltage protection.
• Shielded power entry cords / ferrite cores – Additional suppression when cabling runs are long.

Installation & Maintenance

From my experience, placement matters more than people expect. Install the PFS-152 as close as possible to the mains entry point, with the shortest practical lead length between the filter and your power entry. Keep line and load conductors separated to minimize coupling.

• Cabinet standards – Mount on a grounded metal backplate; ensure PE is securely bonded to the filter chassis.
• Ventilation – Provide reasonable airflow; while losses are low, two-stage designs can warm slightly under continuous high load.
• Wiring – Use appropriately rated copper conductors; keep line/load twisted or routed separately; avoid running them in the same bundle.
• Safety – De-energize before wiring; verify leakage current compliance for your application (especially in medical or IT equipment).
• Routine checks – Annually inspect terminals for tightness and discoloration; clean dust buildup; confirm earth continuity.
• Firmware updates – Not applicable (passive device), but it’s wise to re-verify EMC after any drive/PSU firmware changes.

A customer in packaging machinery told us the PFS-152 reduced random PLC input chatter after they added a new VFD—no other changes. That seems to be a typical outcome when motors and controls share the same cabinet without much separation.

Quality & Certifications

• CE and RoHS conformity for most production runs
• UL recognition is commonly available in this rating class
• Manufacturer’s warranty: 12 months (365 days)