Finder Combined Arrester Type 1+2+3 7P.94.8.255.Z007 (7P948255Z007)

Protect photovoltaic installations from lightning strikes and surges with the Finder Combined Arrester Type 1+2+3 7P.94.8.255.Z007. Designed for solar energy systems operating at up to 1000 V DC, this 3-pole arrester combines varistor and spark gap technology to safely divert transient overvoltages to ground. It mounts on a standard DIN rail and includes a remote signaling contact for status monitoring.

Key specifications

• SPD Type: Type 1+2+3 Combined Arrester
• Nominal DC Voltage (Un): 1000 V DC
• Max Continuous Operating Voltage (Uc): 1060 V DC
• Nominal Discharge Current (In) (8/20 µs): 20 kA
• Max Discharge Current (Imax) (8/20 µs): 40 kA
• Impulse Current (Iimp) (10/350 µs): 7 kA
• Voltage Protection Level (Up): < 4 kV
• Number of Poles: 3-pole
• Protection Mode: L+/PE, L-/PE
• Technology: Varistor (MOV) and Spark Gap (GDT)
• Mounting Type: DIN Rail (EN 60715)
• Operating Temperature Range: -40 to +80 °C
• Degree of Protection (IP): IP20
• Remote Signaling Contact: Yes (NC/NO)
• Short-circuit Withstand Capability (Isccr): 100 A DC
• Response Time: < 25 ns
• Standards: EN 50539-11, IEC 61643-31

Why choose it

This combined arrester provides comprehensive protection against direct lightning strikes and induced surges, ensuring the longevity and reliability of your PV system. Its compact DIN rail design simplifies installation in distribution boards, and the remote signaling contact allows for easy integration into monitoring systems.

Ideal use cases

• Photovoltaic installations up to 1000 V DC
• Protection of inverters and DC combiner boxes
• Commercial and residential solar arrays
• Systems requiring remote status monitoring

Good to know

The arrester is compliant with EN 50539-11 and IEC 61643-31 standards for surge protective devices in photovoltaic applications. Its wide operating temperature range makes it suitable for various climatic conditions.