Broadband Gas Discharge Tube (GDT) Protectors for Coaxial Surge Protection
HUBER+SUHNER 3401 and 3402 series GDT protectors offer electromagnetic threat mitigation with DC continuity support
HUBER+SUHNER 3401 and 3402 series GDT protectors deliver dependable broadband protection for coaxial transmission lines exposed to electromagnetic disturbances such as lightning-induced surges, electrostatic discharge (ESD), and nuclear electromagnetic pulses (NEMP). Engineered to protect RF equipment in critical infrastructure and defense applications, these protectors feature a voltage-triggered GDT that swiftly diverts surge energy to ground. The series 3401 supports operation up to 1 GHz, while series 3402 extends performance up to 3 GHz. Both models provide DC and AC continuity, making them ideal for systems with remotely powered devices. Key benefits include a replaceable GDT capsule, surge current handling capability up to 30 kA (8/20 µs), a variety of connector options such as N, TNC, and 7/16. Optional SEMPER self-extinguishing technology further enhances safety.
- Broadband operation: up to 1 GHz (series 3401) or 3 GHz (series 3402)
- Surge current handling capacity up to 30 kA (8/20 µs)
- DC/AC continuity for remote-powered applications
- Field-replaceable GDT capsule for easy maintenance
- Connectors options: N, TNC, or 7/16
- Optional SEMPER self-extinguishing technology for enhanced safety
- Vehicle protection applications
- Radar and sensor systems
- Remote radio installations
- VHF/UHF transmission networks
- Satellite and broadcast infrastructure
3401 Series GDT Protectors
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 3401.01.A | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,515.16 | View Details |
![]() | ![]() | 3401.00.0022 | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,777.92 | View Details |
![]() | ![]() | 3401.01.C | GDT 20KA 2 IN-LINE | 0 - Immediate | $4,515.16 | View Details |
![]() | ![]() | 3401.02.A | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,515.16 | View Details |
![]() | ![]() | 3401.17.0033 | GDT 20KA 2 IN-LINE | 0 - Immediate | $4,842.94 | View Details |
![]() | ![]() | 3401.17.0048-EX | GDT 20KA 2 IN-LINE | 0 - Immediate | $5,146.66 | View Details |
![]() | ![]() | 3401.17.0056 | GDT 470 V 20KA 2 IN-LINE | 0 - Immediate | $5,000.59 | View Details |
![]() | ![]() | 3401.17.C | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,717.19 | View Details |
![]() | ![]() | 3401.17.K | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,821.64 | View Details |
![]() | ![]() | 3401.17.L | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $10,447.39 | View Details |
![]() | ![]() | 3401.18.A | GDT 20KA 2 IN-LINE | 0 - Immediate | $4,717.19 | View Details |
![]() | ![]() | 3401.26.0012-EX | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,951.67 | View Details |
![]() | ![]() | 3401.26.A | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,515.16 | View Details |
![]() | ![]() | 3401.26.C | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,515.16 | View Details |
3402 Series GDT Protectors
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 3402.17.3001 | GDT 20KA 2 IN-LINE | 0 - Immediate | $5,108.17 | View Details |
![]() | ![]() | 3402.17.3002 | GDT 20KA 2 IN-LINE | 0 - Immediate | $5,108.17 | View Details |
![]() | ![]() | 3402.26.3001 | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,898.15 | View Details |
![]() | ![]() | 3402.17.0033 | GDT 20KA 2 IN-LINE | 0 - Immediate | $5,290.07 | View Details |
![]() | ![]() | 3402.17.0043 | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $5,170.13 | View Details |
![]() | ![]() | 3402.17.0044 | GDT 20KA 2 IN-LINE | 0 - Immediate | $5,170.13 | View Details |
![]() | ![]() | 3402.17.0072-EX | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $5,317.19 | View Details |
![]() | ![]() | 3402.17.A | GDT 20KA 2 IN-LINE | 16 - Immediate | $5,798.96 | View Details |
![]() | ![]() | 3402.17.C | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,929.97 | View Details |
![]() | ![]() | 3402.17.K | GDT 20KA 2 IN-LINE | 0 - Immediate | $5,022.46 | View Details |
![]() | ![]() | 3402.18.A | GDT 20KA 2 IN-LINE | 0 - Immediate | $4,929.97 | View Details |
![]() | ![]() | 3402.26.0002 | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,819.98 | View Details |
![]() | ![]() | 3402.26.0004 | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | $4,942.57 | View Details |
![]() | ![]() | 3402.26.0006-EX | GDT 90 V 20KA 2 IN-LINE | 0 - Immediate | $5,003.47 | View Details |
![]() | ![]() | 3402.27.0001 | GDT 230 V 20KA 2 IN-LINE | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | 3402.41.0037 | GDT 20KA 2 IN-LINE | 0 - Immediate | $6,284.34 | View Details |
![]() | ![]() | 3402.41.0038 | GDT 20KA 2 IN-LINE | 0 - Immediate | $6,284.34 | View Details |

































