Description
⚡ Advanced Surge Protection for Three Phase Installations – 381649S SPD
Type 1+2+3 50kA Three Phase Lightning and Surge Arrester – Window Indicator & Pluggable Modules
The Surge Devices 381649S 3 Phase SPD offers powerful, multi-level protection for three phase electrical systems. Designed to handle direct lightning strikes and transient overvoltages, this pluggable SPD provides reliable defence for sensitive electronic equipment across TN-S and TNC-S installations. With a visual window indicator and optional remote monitoring, it’s ideal for use in commercial and industrial panels requiring rapid response and maintenance ease.
Key Features of the Surge Devices 381649S SPD
- Combined Type 1+2+3 arrester rated 50kA (10/350µs) for complete protection
- Visual status window for instant operational visibility
- Pluggable modules for tool-free servicing
- Remote monitoring capability via changeover contacts
- Low let-through voltage: <1.2kV
- Fast response time under 25ns
- DIN rail mountable for compact integration
- Certified to BSEN62305, BSEN61643-11, BS7671
- Manufactured in Europe – robust and cost-effective
⚙️ Technical Overview – Surge Devices 381649S 3 Phase SPD
- Protection Type: Type 1+2+3 combined arrester
- Surge Capacity: 50kA (10/350μs); In (8/20) = 20kA
- Voltage Protection Level: <1.2kV
- Max. Continuous Operating Voltage (Uc): 275V AC
- Temporary Overvoltage (TOV): 335V for 5 sec
- Response Time: <25ns
- Recommended Backup MCB: 63A (max. fuse: 160A gL/gG)
- Short Circuit Capacity: 60kA
- Cable Size: 25mm²
- Mounting: Standard DIN rail
- System Compatibility: TN-S and TNC-S
️ What’s Included
- Surge Devices 381649S Lightning & Surge Arrester
- Visual indicator module (installed)
- Pluggable SPD modules (pre-fitted)
- Terminal instructions for safe installation
✅ Why Choose the Surge Devices 381649S Arrester?
This device gives fast, strong protection. It helps prevent damage from lightning and power surges. The clear indicator shows when it needs replacing. Thanks to the pluggable design, swapping out a module is quick and easy. Installers also benefit from the BMS-ready remote contacts.
Guarantee & Compliance
Built in Europe, this SPD meets all key UK and EU standards. It’s safe, strong, and made to last. Use it in commercial panels, industrial systems, or other three phase setups.
Summary – Surge Devices 381649S 3 Phase Lightning and Surge Arrester
The Surge Devices 381649S SPD is a 3 phase lightning arrester. It protects against 50kA surges, with a clear window and replaceable modules. Great for TN-S and TNC-S systems.
Explore Surge Devices 381649S Alternatives
- Want the same protection with BMS contacts? Check out the SY12350KA4P – SPD with Remote Output and Indicator
- For sealed use cases, try the SY12350KA4P/ENC – Enclosed Surge Arrester with DIN Mount
