Surge Protector SIEMENS DC T1+T2 / 5SD7483-6 1050VDC

The SIEMENS 5SD7483-6 surge protector is a modular protective device for photovoltaic installations, designed as a combined T1/T2 type for isolated and grounded systems. The device is intended for operation at a direct voltage of up to 1,050 V DC and provides protection for lines against surge voltages and lightning strikes.

Manufacturer: Siemens — an international manufacturer of devices and solutions for power engineering and automation. The product comes from the Siemens surge protection device line, compliant with the manufacturer's standards and documentation.

Electrical Parameters

• Device type: Surge arrester T1/T2 (SPD Test Class I and II according to EN 61643-11)
• Rated/operational voltage: 1,000 V (continuous operating voltage max 1,000 V)
• Uc (MPP voltage): 1,050 V
• Maximum discharge current (8/20 µs): 40 kA (total), 15 kA at standard 8/20 µs per single element
• Peak lightning current (10/350 µs): 5 kA
• Protection level / residual voltage: 3.5 kV (maximum), at 10 kA ≤ 3.2 kV, at 5 kA ≤ 2.9 kV, at 2 kA ≤ 2.6 kV
• Response time: 25 ns
• Apparent power consumption: max. 25 mVA
• Short-circuit current rating (SCCR): 0.3 kA at 264 V

Mechanical and Connection Parameters

• Mounting: DIN rail 35 mm
• Enclosure material: PA 6.6/PBT
• Protection degree: IP20 (all terminals)
• Dimensions: width 53.4 mm, height 90 mm, depth 71.5 mm
• Net weight: 381 g
• Electrical connections: screw terminal, wire stripping length 16 mm, tightening torque 4.3–4.7 Nm, screw thread M5
• Wire cross-sections: multi-stranded wires 1.5–25 mm², solid wires 1.5–35 mm² (AWG 15–2)
• Pollution degree: 2
• Operating humidity: 5 % … 95 %