Omrdon Technology 
OMS-RJ45/4S-ISO CAT5 隔离型百兆网络防雷器,用于网络交换机、路由器、工业以太网等网络通信链路的电涌保护
Product Overview
欧姆雷盾（OMRDON）OMS-RJ45/4S-ISO隔离型网络电涌保护器（SPD）是一款专为百兆以太网（10/100Mbps）设计的高性能防雷设备。严格遵循IEC与GB标准，适用于雷击保护区的1-2区与2-3区交界处，有效防御雷电感应、电网波动、静电放电及负载冲击对敏感网络设备的损害。其独特的隔离设计，在提供强大电涌保护的同时，保障信号高速、无损传输，是数据中心、企业网络、通信系统等关键场景的理想防护解决方案。
Functional Features:
✅ Dual protection mechanism
- Two-stage series composite protection: Low residual pressure and long life provide consistent protection.
- Triple protection for over-current, over-voltage and clamping: Extremely fast response (≤1ns), instantaneous suppression of surge impacts.
✅ High-speed network compatibility
- 支持100Mbps百兆传输，插入损耗≤0.2dB，不影响网络速度与稳定性。
- Isolation voltage up to 1.5KVIt effectively isolates interfering signals and improves transmission quality.
✅ High reliability design
- Nominal discharge current 5KA, maximum through-current capacity 10KA (8/20μs), high protection capability.
- Aluminum alloy atomized shielding shell, good anti-interference, support screw fixing or rail mounting, flexible installation.
✅ Plug-and-play, no impact on operation
- No need to power down the equipment during surge protection, business continues to run for seamless protection.
Typical Applications:
- Enterprise local area network (LAN), data center, server room network equipment
- Interface protection for network switches, routers, servers, firewalls, etc.
- Network communication links for monitoring systems, intelligent buildings, industrial Ethernet, etc.
- Outdoor network equipment for communication base stations, radio and television transmission systems, etc.
Technical Parameters
| Product Model | OMS-RJ45/4S-ISO |
| SPD category | flammable |
| Test level | C2, B2 |
| Rated operating voltage (Un) | 5V |
| Maximum continuous operating voltage (Uc) | 8V |
| C2 nominal discharge current (In) | 5KA (8/20μs) |
| C2 total discharge current (ITotal) Xassemble-C | 10KA (8/20μs) |
| B2 Maximum impulse withstand voltage (Uoc) Xassemble-C | 6KV (10/700μs) |
| Voltage protection level (Up) X-X | ≤15V |
| Isolated Voltage | 1.5KV |
| Maximum data transfer rate | 100Mbps |
| Insertion loss (Ae) | ≤0.2dB |
| Response time (Ta) | ≤1ns |
| Interface Type | RJ45 |
| protected mode | X-X, X-C |
| Number of protected interfaces | single-circuit |
| Protection Pin | 1/2,3/6 |
| Connection to grounding wire cross section (PE) | ≥2.5mm² |
| Installation | Tandem, screw mounted (optional 35mm DIN rail) |
| working environment | -40 to +70°C |
| relative humidity | ≤95% (25-30°C) |
| Enclosure protection level | IP20 |
| Housing Material | aluminum |
| Test basis | gb/t18802.21, iec61643-21 |
Product Dimension Drawing
Installation and Wiring Guide
1. Installation location recommendations
- Deployed in series on protected equipmentRecent front-endThe signal path: Signal source (surge) → SPD input (IN) → SPD output (OUT) → protected equipment.
- Be sure to connect the wires according to the “IN” and “OUT” signs, and do not reverse the connection.
2. Grounding requirements
- Grounding wire cross section ≥ 2.5mm², grounding resistance ≤ 4Ω.
- The PE terminal must be equipotentially connected to the lightning protection ground or the equipment enclosure.
3. Maintenance tips
- No special maintenance is required, and it can be viewed in conjunction with routine system checks.
- If you find the network abnormal, try to remove the SPD temporarily, if it returns to normal then the SPD may be deteriorated and need to be replaced.
