Best-fit use cases
Three-phase power entry for inverters, VFDs, servo drives, machine tools, UPS front ends, and automation cabinets where conducted emissions are a known risk.
Quick fit: when this filter belongs on your shortlist
The YX-G family is positioned by TPS ELECTRIC LLC as a high-current three-phase EMI line filter used at the AC input of industrial equipment to reduce conducted noise and improve system stability. The uploaded Terminal Bolt sheet also shows application fit for photovoltaic systems, power supplies, inverters, three-phase motor drives, UPS/SMPS, industrial automation equipment, and manipulator equipment. In other words, this is not a “generic noise part” you add at the end of a build. It is a front-end EMC control element for real industrial power paths.
For US system integrators and panel builders, the decision usually comes down to three questions: what safety path matters, what emissions target applies to the complete assembly, and whether the filter will still work in your real enclosure with your actual cable set and grounding scheme. Answer those together and filter selection gets much cleaner.
Why Terminal Bolt matters
It supports more secure field wiring and mechanical robustness in industrial cabinets where vibration, rework, and current capacity matter.
What result you should expect
A better-controlled AC input path, cleaner EMC troubleshooting, and a more credible compliance package before lab testing or customer review.
Practical buying note: treat the YX-G Series as a configuration family, not a single part number. The Terminal Bolt sheet shows multiple electrical schematics (81 / 82 / 91 / 92), multiple case sizes (G2 / G3 / G4 / G5 / G6), and current-dependent mechanical options. If you want the right unit the first time, start from system topology, not just current.
If you are comparing this filter against a custom cabinet redesign, remember that a well-chosen filter is usually cheaper than late-stage cable rework, shield termination changes, repeat LISN sessions, and customer escalation. That is why many teams first review the industrial power supply compliance selection workflow for US projects, then move to the YX-G Series (Terminal Bolt) product page with a clearer requirements list in hand.
How to map IEC 60939-3, UL 1283, and IEC 61000-6-4 without over-claiming compliance
A filter can sit inside more than one standards conversation, but those standards do not do the same job. For the YX-G Series (Terminal Bolt), the cleanest summary is this: IEC 60939-3 and UL 1283 frame the filter safety-evaluation conversation, while IEC 61000-6-4 sets an emissions target for the complete industrial product. That distinction matters because “the filter passes, so the cabinet passes” is not a valid EMC claim.
IEC 60939-3: when passive filter safety testing is the right frame
IEC 60939-3 is the passive EMI filter document most engineers reference when they need a safety-test framework for interference-suppression filter units. In cabinet terms, it helps show that the selected component belongs to a recognized passive-filter category rather than being a loosely described BOM item.
UL 1283: when the North American evaluation path shifts
UL 1283 covers EMI filters in a North American safety context. It becomes important whenever your customer, inspector, or internal compliance team expects US-recognized filter language in the documentation package. If the project is US-bound, discuss the UL path early rather than after panel build.
IEC 61000-6-4: the industrial emissions target for the complete assembly
IEC 61000-6-4 is not a filter-only document. It is a generic emission standard for industrial environments at the equipment level. The YX-G filter can be part of the solution, but the actual result still depends on the complete assembly: drive, cables, bonding, enclosure, grounding, and test arrangement. That is why serious teams pre-test with the real harness and cabinet geometry.
For standards review, use the official sources rather than reseller summaries: IEC 60939-3 on the IEC webstore, UL 1283 on the UL standards site, and IEC 61000-6-4 on the IEC webstore. Use those links to confirm scope language, edition status, and applicability before finalizing your test plan.
| Standard | What it helps you answer |
|---|---|
| IEC 60939-3 | Is the selected component aligned with the safety-test framework for passive EMI filter units used for interference suppression? |
| UL 1283 | Does the North American safety path for the filter align with the kind of installation and approval language your project requires? |
| IEC 61000-6-4 | Will the finished industrial product or cabinet control emissions well enough in the final test setup? |
Avoid this common claim: “The filter is compliant, so the cabinet is compliant.” A better statement is: “The filter selection supports the intended safety and EMC path, and final compliance must be verified on the complete product.”
For teams building repeatable documentation, it helps to pair this standards map with TPS resources on EMC test standards for power electronics, electrical safety checks before certification, and repeatable UL/CE-oriented system documentation. Those articles help translate the standard names into project actions that purchasing and engineering can both approve.
How to specify the right YX-G Series (Terminal Bolt) configuration
The uploaded Terminal Bolt sheet shows the configuration logic that a generic family page cannot. It indicates four electrical schematic families—81, 82, 91, and 92—multiple cases from G2 through G6, Terminal Bolt termination, and configuration-dependent current ratings. So the correct part is driven by topology, current envelope, cabinet space, and service preference.
Start with the wire system and schematic family
The TPS product page describes the YX-G family as suitable for both three-phase three-wire and three-phase four-wire applications, and the uploaded sheet points to different schematic variants. So do not ask for “the YX-G filter” and stop there. Specify the supply structure, whether neutral is present, and whether the main source is a drive, inverter, UPS block, or another noisy front end. That is what lets TPS ELECTRIC LLC map you to the right schematic family.
Build current and thermal margin into the RFQ
Do not size the filter only to nominal current. Startup, regenerative events, load steps, ambient temperature, enclosure crowding, and line impedance all matter. In a noisy inverter cabinet, current margin becomes a compliance decision as much as a reliability decision.
Confirm mechanical fit early
The Terminal Bolt sheet shows case options from G2 to G6. For panel builders, that means hole pattern, cable bend radius, tool access, and separation from noisy conductors all need to be reviewed together. A part that fits CAD but forces poor wire routing can still cost you a failed conducted-emissions run.
Specify in the RFQ
- Three-phase three-wire or three-phase four-wire topology
- Nominal current plus startup/inrush margin
- Main application: VFD, inverter, UPS, automation, PV, or machine tool
- Preferred termination: Terminal Bolt
- Case-size envelope and mounting constraints
Ask TPS to confirm
- Recommended schematic family: 81 / 82 / 91 / 92
- Best case size for wiring and service access
- Current rating for the exact configuration
- Required approvals and document package for your market
- Any custom adaptation needed for the enclosure or load profile
If your team wants fewer late-stage changes, link the part-selection review to cabinet design discipline. The TPS content on cabinet layout and mounting discipline, wire labeling best practices, and grounding and bonding failure modes that drive EMI issues helps keep the mechanical and compliance conversations aligned. When you are ready to move from shortlist to sourcing, send the exact topology and current envelope through the YX-G Series (Terminal Bolt) RFQ page instead of a one-line part request.
Installation practices that actually decide whether the filter works
Many engineers identify the need for a filter but still lose time because the installation bypasses its benefit. Conducted EMI on a three-phase cabinet is not only a component issue; it is also a layout issue. If line-side and load-side conductors run together for too long, or if the ground bond is long and inductive, the filter can look weak even when the selected part is reasonable.
Place the filter close to power entry and control the return path
The filter should usually sit close to the power entry so the noisy path does not spread across the enclosure before attenuation begins. Keep input and output conductors separated. Keep the protective-earth bond short, wide, and low impedance. If the cabinet includes a VFD, do not route motor leads across the clean side of the filter path.
Protect the “clean side” from recoupling
Once the filter creates a cleaner section of the power path, treat that area as a controlled zone. Avoid bundling it with contactor coils, switching power leads, or long parallel runs to noisy harnesses. In practice, a good filter plus bad routing is often worse than a modest filter plus disciplined routing.
Validate with pre-compliance, not hope
TPS is right to emphasize pre-compliance. If the project schedule matters, run the cabinet or representative assembly before formal lab booking. Use the real cable lengths, grounding, drive settings, and enclosure. That is how you catch false confidence created by unrealistic bench setups.
Fast win for integrators: when comparing two filter options, keep the wiring geometry identical during pre-test. Otherwise you may attribute a routing change to a component change and make the wrong sourcing decision.
For deeper troubleshooting, the most useful companion reads are TPS articles on EMC pre-compliance testing, conducted-emissions setup mistakes that cause false fails, and cabinet fixes that work for EFT and surge stress. Those pieces are especially relevant if your YX-G selection is part of a broader cabinet hardening plan rather than a standalone component swap.
Executable outcome: the RFQ and verification package that gets approved faster
For a BoFu project, the goal is a better RFQ. Send TPS ELECTRIC LLC a package that reduces the back-and-forth between sourcing, design, and compliance. The more concrete the package, the faster the supplier can map you to the right YX-G Series (Terminal Bolt) configuration.
What to send with your RFQ
- System type: inverter, VFD cabinet, UPS front end, PV subsystem, automation cabinet, or other three-phase industrial equipment.
- Power topology: three-phase three-wire or three-phase four-wire, plus nominal line conditions.
- Operating current, startup behavior, overload profile, and any known thermal constraints.
- Preferred termination: Terminal Bolt, with any wire gauge or service-access requirement.
- Mechanical envelope, mounting orientation, and nearby heat or interference sources.
- Compliance target: which customer or market language matters, including any need to align with IEC 60939-3, UL 1283, or industrial EMC verification.
- Test plan status: lab scheduled, pre-compliance pending, or redesign in progress.
What your team should verify before PO release
- Exact schematic family and case size selected for the real wire system.
- Document package required by the end customer, inspector, or internal compliance lead.
- Clear cabinet routing plan that preserves filter effectiveness.
- Pre-compliance method and pass/fail criteria for the actual assembly.
- FAT and incoming-inspection records needed for repeatable builds.
Ready to source?
If your build is already in the compliance, redesign, or quotation stage, move directly to the YX-G Series (Terminal Bolt) page and submit the project details that matter: topology, current, case-space limits, and compliance path. That gives TPS ELECTRIC LLC a much better starting point than a bare series name.
FAQ
1) Does choosing a YX-G filter mean my cabinet automatically meets IEC 61000-6-4?
No. The filter can materially improve conducted-noise control, but IEC 61000-6-4 applies to the complete industrial product or assembly. Final results depend on wiring, grounding, enclosure design, cable routing, ports, and the actual test arrangement.
2) When should I care about IEC 60939-3 versus UL 1283?
Care about both when your project crosses safety and market-approval boundaries. IEC 60939-3 helps frame passive EMI filter safety evaluation, while UL 1283 is highly relevant for North American approval language and installation contexts. Your compliance lead or customer spec usually tells you which path carries more weight for the final file.
3) What should I send TPS ELECTRIC LLC to get the right Terminal Bolt configuration?
Send the power topology, whether the system is three-wire or four-wire, load current with startup margin, application type, cabinet-space limits, preferred termination, and the compliance target. That is enough to start matching the correct schematic family and case size.
4) Is current rating alone enough to choose the filter?
No. Current is necessary, but it is not sufficient. You also need the wire system, noise source, case size, grounding strategy, thermal conditions, and routing discipline. These all affect whether the selected filter performs as expected in the final cabinet.
5) Why is Terminal Bolt worth calling out in industrial RFQs?
Because termination style influences installation repeatability, service access, and mechanical robustness. In dense or high-current cabinets, the wrong termination method can slow assembly, increase wiring errors, or create service issues later.
