O-Ring Sealed High-Current Feedthrough Studs, up to 1000 A
105–1000 A · stainless steel · O-ring seal
NPT-Sealed High-Current Feedthrough Studs, 105 to 750 A
105–750 A · 5000 VAC · leak < 1 × 10⁻⁸ Pa·m³/s
These sealed studs carry high current through the wall of a vacuum chamber or pressure vessel. The brass body seals with a tapered NPT thread; a copper stud is molded into epoxy insulation. Every unit is pressure-tested, and the leak rate is below 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa differential.
- Current rating
- 105–750 A
- Withstanding voltage
- 5000 VAC
- Sealing
- NPT thread
- Leak rate
- < 1 × 10⁻⁸ Pa·m³/s
- Temperature
- −40 to +130 °C
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Key features
- High current through vacuum and pressure walls: 105 to 750 A
- NPT tapered-thread seal, NPT 1/2 to NPT 1
- 5000 VAC withstanding voltage, ≥ 5000 MΩ insulation resistance
- Leak rate < 1 × 10⁻⁸ Pa·m³/s; every unit tested at 0.8 MPa
- Copper stud, epoxy insulation, brass body, nuts and washers
- Custom designs on request
Specifications
| Parameter | Value | Condition |
|---|---|---|
| Current rating | 105–750 A | By model |
| Dielectric withstanding voltage | 5000 VAC | |
| Insulation resistance | ≥ 5000 MΩ |
| Parameter | Value | Condition |
|---|---|---|
| Leak rate | < 1 × 10⁻⁸ Pa·m³/s | 0.1 MPa pressure differential |
| Hydrostatic pressure | ≥ 8 MPa type test; 0.8 ± 0.05 MPa on every unit | |
| Operating temperature | −40 to +130 °C | |
| Body | Brass | |
| Stud | Copper | |
| Insulation | Epoxy molding compound |
Parameters not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing.
Models
| Model | Max. current | Body thread | Stud thread |
|---|---|---|---|
| C/JXZ-NTA-1 | 105 A | NPT 1/2 | 1/4-20 UNC |
| C/JXZ-NTB-1-G01 | 275 A | NPT 3/4 | M10 |
| JXZ-24B | 500 A | NPT 3/4 | 1/2-20 UNF |
| JXZ-23B | 500 A | NPT 1 | 1/2-13 UNC |
| C/JXZ-NTD-1 | 750 A | NPT 1 | 5/8-20 UNF |
Typical applications
- Semiconductor manufacturing equipment
- Vacuum furnaces and heat treatment
- Refrigeration and gas compressors
- Power distribution in pressure vessels
Frequently asked questions
How is each feedthrough tested?
Every unit is pressure-tested at 0.8 ± 0.05 MPa; the type test covers ≥ 8 MPa. Leak rate is below 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa differential.
Can you make other currents or threads?
Yes. Send us current, voltage, wall thread and length and we will design a feedthrough to suit.
Selection guides
Related series
Custom High-Current Power Feedthroughs
Designed to your vessel · 450–750 A examples · to +170 °C
From sample to production
Send your requirements
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 built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. 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, with machining, molding, plating and assembly in our own Shenyang factory.
Need a quote or a drawing?
Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.
NPT-sealed studsRequest a quote