We Design. We Build. We Deliver.
Engineered to deliver exceptional signal integrity, zero-wear switching, and complete compliance with UL, cUL, CE, and CISPR/FCC standards.
In the contemporary electrical engineering landscape, electrical equipment faces unprecedented operational challenges. The rapid proliferation of wide bandgap (WBG) semiconductors—specifically Silicon Carbide (SiC) and Gallium Nitride (GaN) field-effect transistors—has enabled power conversion efficiencies exceeding 98%. However, this leap in switching speeds ($dv/dt$ rates exceeding 50 kV/μs) introduces severe high-frequency electromagnetic interference (EMI) transients across AC and DC power distribution lines.
As premier custom OEM power filter manufacturers and suppliers, Altran Magnetics, LLC works directly at the intersection of electromagnetic compatibility (EMC) theory and physical manufacturing execution. Standard catalog EMI/RFI filters frequently fail in complex industrial environments because off-the-shelf topologies cannot account for dynamic load impedances, spatial mechanical envelope constraints, thermal derating curves, and multi-axis parasitic capacitance pathways inherent to proprietary OEM chassis designs.
Attaining first-pass EMC compliance (such as CISPR 11/32 Class B or FCC Part 15) requires an intimate understanding of noise mode partitioning:
Every OEM power system exhibits a unique electromagnetic fingerprint. When off-the-shelf component suppliers offer rigid, off-the-shelf solutions, Altran Magnetics delivers tailored customization. Operating out of our facility in Sterling, Illinois, our design engineers evaluate your system schematics, power factor parameters, enclosure dimensions, and environmental stress profiles prior to freezing component topology.
Whether your application requires high-frequency attenuation for 1,500VDC Megawatt EV Fast Chargers, low-leakage medical line filters, or potted IP67 multi-stage heavy industrial power conditioning networks, our engineering team manages the complete product development lifecycle under strict revision control.
Single-stage L-C, two-stage Pi/T networks, and multi-stage matrix passive filters engineered to match your system’s exact insertion loss requirements (up to 100 dB attenuation from 150 kHz to 30 MHz).
Utilization of high-permeability nanocrystalline cores, amorphous magnetic alloys, and high-frequency ferrite formulations to maximize power density while eliminating magnetic saturation under extreme peak loads.
Vacuum epoxy encapsulation, custom extruded aluminum housing design, and silicone potting for high vibration, thermal shock (-40°C to +125°C), and humidity compliant with IP67/IP68 ingress ratings.
Seamless co-engineering of EMI suppression filters with hermetically sealed, gas-filled high-voltage DC contactors and solid-state relays for zero-wear high power disconnect modules.
Built fully aligned with UL 60939, IEC 60939, CSA C22.2, and RoHS/REACH compliance. Every custom component includes complete compliance documentation for simplified end-system listing.
Custom busbars, threaded studs, panel mount quick-connect tabs, or direct PCB solder pin architectures tailored to optimize layout assembly velocity and eliminate installation human error.
As a single-source OEM manufacturer, Altran Magnetics provides an interconnected ecosystem of power components designed to work in synergy across industrial panels, vehicle architectures, and power conversion cabinets.
Designed for variable frequency drives (VFDs), renewable energy inverters, automation cabinets, and high-power industrial machinery. Available in ratings from 1A to over 600A at voltages up to 690VAC. Our custom three-phase delta/wye line filters eliminate harmonic distortion and protect sensitive logic controls from grid-side line surges.
Main disconnect and pre-charge switching for electric vehicle charging infrastructure, battery energy storage systems (BESS), solar disconnects, and heavy electric transportation. Gas-filled arc chambers prevent contact oxidation and welding under high inductive energy interruption.
Zero-cross and random turn-on AC/DC solid-state relays for high-cycle thermal control, process heating, and motor actuation. Features optical isolation up to 4,000Vrms and integrated RC snubber networks for enhanced transient voltage suppression.
Brushless DC (BLDC) and AC motor-blower units designed for commercial HVAC, enclosure thermal management, medical devices, and cleanroom air handling systems. Engineered for high static pressure with ultra-quiet operational acoustic signatures.
Commercial and municipal photo controls featuring NEMA twist-lock or button form-factors. Built with high-precision light sensing elements and rugged surge protection to ensure dependable dusk-to-dawn outdoor illumination control across multi-decade service lifetimes.
Select the optimal filter topology based on operational voltage, system frequency, noise spectrum, and installation requirements:
| Filter Series / Class | Rated Voltage (V) | Current Range (A) | Insertion Loss (dB @ 1MHz) | Target Noise Spectrum | Primary OEM Applications |
|---|---|---|---|---|---|
| Custom Single-Phase Line | 120 / 250 VAC | 1A – 50A | 45 dB – 75 dB | 150 kHz – 30 MHz (CM/DM) | Medical Gear, Test Instruments, Telecom Power |
| Three-Phase Industrial Delta | 480 / 520 VAC | 10A – 300A | 50 dB – 85 dB | 150 kHz – 10 MHz (VFD Harmonics) | CNC Automation, Servo Drives, Inverters |
| Three-Phase Wye Heavy Duty | 690 VAC Max | 30A – 600A+ | 60 dB – 95 dB | 10 kHz – 30 MHz Broad Spectrum | Wind Energy, Central Solar Inverters, Mining |
| HVDC Fast-Charge Filter | 1,000 / 1,500 VDC | 50A – 500A | 55 dB – 90 dB | SiC / GaN Transients (100kHz - 100MHz) | EV Megawatt Chargers, Battery Energy Storage |
| Low-Leakage Medical Grade | 115 / 250 VAC | 1A – 30A | 35 dB – 60 dB | Low Ground Current (< 5μA) | Patient Monitors, Surgical Lasers, MRI Systems |
As industrial supply chain executives and system architects plan next-generation equipment platforms, several macroeconomic and technological shifts are transforming the OEM power component procurement landscape:
Procurement departments are moving away from sourcing discrete passive components from multiple vendors. The modern trend favors integrated magnetic assemblies—where EMI filters, DC contactors, transient voltage suppressors, and current sensors are integrated into a single, pre-tested, turn-key module. This reduces assembly labor, streamlines procurement BOMs, and places single-source reliability accountability on the manufacturer.
With power densities continuously increasing, thermal management within power filter assemblies has become paramount. Advanced OEM manufacturers utilize finite element analysis (FEA) to optimize heat dissipation pathways across magnetic cores and potting compounds, allowing components to operate at elevated ambient temperatures without thermal derating.
Global supply disruptions have underscored the severe risk of relying purely on overseas off-the-shelf component suppliers. OEM procurement leads prioritize partners like Altran Magnetics who offer direct US engineering interface, quick-turn prototyping from Sterling, Illinois, and transparent lot-traceable supply chain compliance.
Clear insights for engineering leads, quality assurance directors, and global OEM sourcing managers.
Partner with an industry-leading US manufacturer. Contact our engineering team today to review your schematics, request qualification samples, or download complete product datasheets.
