3 Pole Industrial Surge Protection Device Type 1 Class I 50kA 275V for Three-Phase TN-C Systems
Industrial-grade 3-pole surge protection devices designed for three-phase TN-C systems with 150V/275V/320V operating voltage options. These Type 1, Class I certified devices provide reliable protection against lightning strikes and voltage spikes.
- Endures thousands of lightning strikes
- Clear status indication for monitoring
- Available in 1P, 2P, 3P, 4P, 1+1, and 3+1 pole configurations
- Ideal for building protection in national defense applications
- IP20 protection rating and UL94-V0 thermoplastic enclosure
| Specification | BR-50GR 3P |
|---|---|
| Item Name | Surge Arrester |
| SPD Classification (EN61643-11) | Type 1 |
| SPD Classification (IEC61643-11) | Class I |
| Max Continuous Operating Voltage (Uc) | 275V |
| Lightning Impulse Current (10/350µs) | 50kA |
| Nominal Discharge Current (8/20µs) | 50kA |
| Voltage Protection Level (Up) | ≤2.3kV |
| Follow Current Extinguishing Capability | 3kA rms |
| Max Backup Fuse | 315A gG |
| Response Time | ≤100ns |
| Mounting | 35mm Din rail |
| Degree of Protection | IP20 |
| Operating Temperature Range | -40℃ to +80℃ |
| Cross-section Area (Min.) | 4mm² |
| Cross-section Area (Max.) | 35mm² |
| Enclosure Material | Thermoplastic UL94-V0 |
Grounding ensures safety during electrical faults by directing fault currents to ground, while surge protection devices safeguard equipment against instantaneous voltage spikes that can damage sensitive electronics.
Overload protection prevents overheating and fires from excessive current flow, whereas surge protection specifically addresses voltage spikes that can damage electronic equipment.
Surge protective devices remain passive until line voltage exceeds the turn-on voltage of internal components. When activated, SPD components become conductive and shunt excess current to grounding conductors, protecting downstream equipment from transient overvoltage events that last only microseconds.
Britec operates advanced testing equipment and production lines with professional technical personnel and trained workers. Our R&D team maintains leading technical levels and supports OEM/ODM services.
Wenzhou Britec Electric Co., Ltd., established in 2003, specializes in surge protective devices manufacturing with extensive industry experience. We provide quality products, competitive pricing, prompt delivery, and excellent service to global partners.
Britec maintains a strong sales team with surge protection devices sold worldwide. Our primary markets include Europe and Asia, with ongoing cooperation with global customers.
Britec offers comprehensive SPD products with CE, RoHS, TUV, SEMKO, and CB certifications. The company implements ISO9001 quality management systems to ensure product reliability.
Britec develops extensive product ranges covering low voltage lightning protection requirements, including SPDs for power systems, PV systems, and data networks. Applications span electronic systems, computer networks, security systems, power industry, petroleum chemical industry, and national defense.
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