NPT-Sealed High-Current Feedthrough Studs, 105 to 750 A
105–750 A · 5000 VAC · leak < 1 × 10⁻⁸ Pa·m³/s
High-Current Electrical Feedthroughs
Sealed power feedthroughs that carry 105 to 1000 A through vacuum chambers and pressure vessels — NPT-sealed, O-ring sealed and custom designs.
Semiconductor tools, vacuum furnaces, compressors and power equipment in pressure vessels need to pass high current through a sealed wall without leaks or breakdown.
Our feedthrough studs mould a copper stud into epoxy insulation inside a brass or stainless-steel body. Standard models carry 105 to 1000 A with 5000 VAC withstanding voltage, and every unit is pressure-tested; leak rate is below 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa differential.
Compare series
| Series | Current rating | Withstanding voltage | Sealing | Leak rate | Temperature |
|---|---|---|---|---|---|
| NPT-sealed studs | 105–750 A | 5000 VAC | NPT thread | < 1 × 10⁻⁸ Pa·m³/s | −40 to +130 °C |
| O-ring sealed studs | 105–1000 A | 5000 VAC | O-ring | < 1 × 10⁻⁸ Pa·m³/s | −40 to +130 °C |
| Custom power feedthroughs | 450–750 A (examples) | 2400–5000 VAC | O-ring or flange | — | Up to +170 °C |
O-Ring Sealed High-Current Feedthrough Studs, up to 1000 A
105–1000 A · stainless steel · O-ring seal
Custom High-Current Power Feedthroughs
Designed to your vessel · 450–750 A examples · to +170 °C
How to choose
Current
Standard models 105, 275, 500, 750 and 1000 A; custom designs beyond.
Sealing method
NPT tapered thread (brass body) or O-ring (stainless body).
Temperature and media
Standard −40 to +130 °C; custom flange feedthroughs to +170 °C. Choose O-ring material for your media.
Connection
Threaded studs with nuts, or crimp lugs on custom designs.
Options beyond the standard connector
Hermetic signal connectors
Glass-sealed multi-contact receptacles.
High-voltage connectors
J599HV pluggable power connectors to 300 A.
Frequently asked questions
Are the feedthroughs tested?
Yes — every unit is pressure-tested at 0.8 ± 0.05 MPa, and type tests cover ≥ 8 MPa.
From sample to production
Send your requirement
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are made to your order. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration.
Need a quote or a drawing?
Send your part number, pin-out or drawing. An engineer will reply by email.