Live Electrical SA420 4 Pole 10kA/20kA Type 2 Surge Protective Device

Compact Type 2 SPD for Three-Phase Protection

4 Pole 10kA/20kA Type 2 Surge Protective Device – Live Electrical SA420 SPD

The Live Electrical 4 Pole 10kA/20kA Type 2 SPD is a cost-effective surge protection device designed for three-phase systems. It offers dependable Type 2 protection from switching surges and indirect lightning strikes—making it ideal for smaller residential or commercial electrical setups.

This 4-pole SPD fits easily into TPN boards and consumer units, especially in TN-S and TT systems. With 10kA nominal and 20kA maximum discharge capacity, it covers essential surge protection needs while keeping installation simple and standards compliant.

⚙️ Key Features – SA420 Type 2 SPD

• Type 2 Surge Protection – Prevents voltage spikes from internal sources and nearby lightning
• 4-Pole Design – Suitable for 3-phase + neutral TN-S or TT systems
• Discharge Capacity – 10kA nominal, 20kA max (8/20μs waveform)
• Voltage Compatibility – 230/380V with UT withstand of 440/640V
• Residual Voltage – ≤1.2kV at 5kA and ≤1.3kV at 10kA
• Short Circuit Tolerance – Withstands up to 25kA fault current
• Fuse Compatibility – Requires max 125A gG fuse
• Certified Safe – BS EN 61643-11 compliant
• Operating Temperature – -40°C to +85°C
• Enclosure Rating – IP20 for internal electrical panels

Summary – 4 Pole 10kA/20kA Type 2 SPD

The SA420 from Live Electrical is a compact and reliable 4-pole SPD for TN-S and TT systems. With 10kA/20kA surge protection, it’s ideal for smaller three-phase panels needing BS EN 61643-11 certified safety.

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