NOARK Surge Protector for PV Systems TYPE 1+2 1000V DC 3P (111759)

NOARK Surge Protector for PV Systems TYPE 1+2 1000V DC 3P (111759) is a modular surge protector designed to protect photovoltaic installations. It is intended for mounting on a TH-35 mm rail and offers protection in PV class T1+T2 mode (Class I+II, Type 1+2) for ungrounded systems (Y configuration) with a maximum permanent working voltage UCPV of 1000 V DC.

Manufacturer Information

The product has been designed and manufactured by NOARK according to the EN 61643-31 standard. NOARK provides modular protective devices for PV installations with an optical indicator of the varistor insert's status and an optional auxiliary contact for signaling the status of the element.

Selected Electrical Parameters

• Type of protection: PV T1+T2 (Class I+II, B+C, Type 1+2)
• Nominal connection voltage (Un): 1000 V
• Maximum permanent working voltage (UCPV): 1000 V DC
• Nominal discharge current In (8/20 µs): 20 kA per module
• Maximum discharge current Imax (8/20 µs): 40 kA
• Impulse current Iimp (10/350 µs): 6.25 kA
• Leakage current IPE at UREF DC: < 50 µA
• Maximum short-circuit current ISCPV: 1000 A
• Protection mode: + → PE, − → PE, + ↔ −

Mechanical Parameters and Dimensions

• Number of modules (width): 3 modules (3P) — total width 3 × 17.5 mm = 52.5 mm
• Width per module: 17.5 mm (per module)
• Height: 83 mm (89 mm with rail mounting bracket)
• Front height: 45 mm
• Mounting method: mounting on standard TH-35 mm rail, fixed mounting
• Protection degree: IP20
• Terminals: spring, M5 screw; cross-section of connection terminals 2.5 — 25 mm²
• Tightening torque for terminal screws: 2 — 3.5 Nm
• Cross-section of auxiliary contact terminals: 0.14 — 1.5 mm²
• Weight (per pole): 0.12 kg (weight of one modular unit)