Hager SPA801Z Combined Lightning and Surge Arrester Type 1+2+3 4P Iimp 12.5kA TT/TNS

The Hager SPA801Z is a high-performance combined lightning and surge arrester designed to protect electrical installations against direct and indirect lightning strikes as well as switching surges. It integrates Type 1, Type 2, and Type 3 protection in a single compact device, making it ideal for main distribution boards in TT and TNS earthing systems.

Advantages

This arrester offers comprehensive protection with a lightning impulse current of 12.5 kA (10/350 µs) per pole and a nominal discharge current of 20 kA (8/20 µs). Its low voltage protection level (<1.5 kV) ensures sensitive equipment is safeguarded. The device features visual status indication (green/red) and remote signaling contacts for easy monitoring. With a modular width of 4 modules (72 mm), it saves space on DIN rails.

Suitable for

• Main distribution boards in residential, commercial, and industrial buildings
• TT and TNS earthing systems
• Protection of sensitive electronic equipment against surges

Key specifications

• Arrester Type: Combined Lightning and Surge Arrester (Type 1+2+3)
• Number of Poles: 4P
• Lightning Impulse Current (Iimp): 12.5 kA (10/350 µs) per pole
• Nominal Discharge Current (In): 20 kA (8/20 µs) per pole
• Max. Discharge Current (Imax): 40 kA (8/20 µs) per pole
• Voltage Protection Level (Up): <1.5 kV
• Max. Continuous Operating Voltage (Uc): 275 V AC
• Nominal Voltage (Un): 230/400 V AC
• Short-circuit Withstand Capability (Isccr): 50 kA
• Follow Current Extinguishing Capability (Ifi): 50 kA
• Response Time: <25 ns
• Mounting Type: DIN Rail
• Modular Width: 4 modules (72 mm)
• Operating Temperature Range: -40 to +80 °C
• Ingress Protection (IP) Rating: IP20
• Status Indication: Visual (Green/Red)
• Remote Signaling: Yes (1 NO/NC contact)
• Standards Compliance: IEC/EN 61643-11

Recommendations

For optimal protection, install this arrester at the main distribution board as close as possible to the service entrance. Ensure proper earthing and bonding according to local regulations. The device is suitable for use in TT and TNS systems only.