SCHELINGER 3P DC 1200V Type 2 Surge Protection Device (SPD) for PV Systems

The SCHELINGER A53-SPD-MOV-DC-3P-T2 is a high-quality 3-pole DC surge protection device designed for photovoltaic systems. It provides reliable protection against transient overvoltages, ensuring the safety and longevity of your solar installation.

Advantages

This Type 2 SPD offers robust protection with a maximum discharge current of 40 kA and a voltage protection level of ≤4.0 kV. Its compact DIN rail mounting design and visual status indication make installation and monitoring easy. The device features both common and differential mode protection, safeguarding all conductors.

Suitable for

• DC photovoltaic systems up to 1200 V
• Main and sub-distribution boards in solar installations
• Commercial and residential PV arrays

Key specifications

• Product Type: Surge Protection Device (SPD)
• Application: DC Photovoltaic (PV) Systems
• Protection Class: Type 2 (T2)
• Number of Poles: 3-Pole (3P)
• Maximum Continuous Operating Voltage (Uc): 1200 V DC
• Nominal Discharge Current (In): 20 kA (8/20 µs)
• Maximum Discharge Current (Imax): 40 kA (8/20 µs)
• Voltage Protection Level (Up): ≤ 4.0 kV
• Response Time: < 25 ns
• Short-Circuit Current Rating (Iscp): 10 kA
• Mounting Type: 35mm DIN Rail
• Operating Temperature Range: -40°C to +80°C
• Degree of Protection: IP20
• Status Indication: Visual (Green: OK, Red: Fault)
• Protection Mode: Common Mode (L+/PE, L-/PE) and Differential Mode (L+/L-)
• Standard Compliance: IEC 61643-11, EN 61643-11
• Housing Material: Flame Retardant Thermoplastic
• Terminal Capacity: 4-35 mm² (flexible/rigid wire)
• Built-in Disconnector: Thermal Disconnector

Recommendations

For optimal protection of your PV system, install this SPD at the inverter DC input and at the combiner box. Ensure proper grounding and follow local electrical codes.