Hager SPA700Z Combined Arrester T1+T2+T3 3P Iimp 7.5kA TNC

The Hager SPA700Z is a high-performance combined surge protective device (SPD) integrating Type 1, Type 2, and Type 3 protection in a single 3-pole unit. Designed for TNC earthing systems, it provides comprehensive protection against direct lightning strikes and switching surges, ensuring the safety of electrical installations in residential, commercial, and industrial buildings.

Advantages

Combines three protection stages in one compact device, saving space and simplifying installation. High impulse current capacity of 7.5 kA per pole (10/350 µs) for direct lightning protection, plus nominal discharge current of 20 kA (8/20 µs) for surge protection. Visual status indicator (green/red flag) allows quick inspection. Complies with IEC 61643-11 and EN 61643-11 standards.

Suitable for

• Main distribution boards in buildings with external lightning protection systems
• Industrial and commercial facilities requiring high surge immunity
• TNC earthing systems (3-phase, 4-wire)
• Upgrading existing installations to meet modern surge protection requirements

Key specifications

• SPD Type: Type 1 + Type 2 + Type 3 Combined
• Number of Poles: 3-pole
• Earthing System: TNC
• Nominal Voltage (Un): 230/400 V AC
• Maximum Continuous Operating Voltage (Uc): 275 V AC
• Impulse Current (Iimp) (10/350 µs): 7.5 kA per pole
• Nominal Discharge Current (In) (8/20 µs): 20 kA per pole
• Maximum Discharge Current (Imax) (8/20 µs): 50 kA per pole
• Voltage Protection Level (Up): < 1.5 kV
• Short-circuit Withstand Capability (Isccr): 25 kA
• Mounting Type: DIN rail (EN 60715)
• Modular Width: 4 modules (72 mm)
• Operating Temperature Range: -25 to +60 °C
• Protection Degree: IP20
• Status Indication: Visual (green/red flag)
• Standards Compliance: IEC 61643-11 / EN 61643-11
• Connection Cross-section: 2.5 - 35 mm² (flexible/rigid)

Recommendations

For optimal protection, install the SPA700Z at the main distribution board as close as possible to the service entrance. Ensure proper coordination with downstream SPDs if used. Always follow local wiring regulations and manufacturer instructions.