Suntree Solar DC Surge Protector (SPD) 40kA 2 Pole 500Vdc

KSh3,300.00

The Suntree Solar DC Surge Protector (SPD) 40kA 2 Pole 500Vdc is a Type 2 parallel-installed component engineered specifically to safeguard solar photovoltaic (PV) systems, inverters, and DC wiring from transient overvoltages, electrical switching surges, and lightning strikes . By providing a low-impedance path, it diverts harmful excess surge energy safely to the ground before it can reach your solar electronics.

Suntree Solar DC Surge Protector (SPD) 40kA 2 Pole 500Vdc Core Technical Specifications

Maximum Continuous Operating Voltage (\(U_{c}\) / \(U_{e}\)): 500V DC
Number of Poles: 2 Pole (2P)
Maximum Discharge Current (\(I_{max}\)): 40kA (using an 8/20µs wave pulse)
Nominal Discharge Current (\(I_{n}\)): 20kA
Voltage Protection Level (\(U_{p}\)): ≤ 2.8kV
Response Time: < 25ns
Mounting Type: 35mm DIN standard guide rail
Enclosure Protection: IP20 standard indoor rating
Certifications: CE and TÜV Rheinland

Suntree Solar DC Surge Protector (SPD) 40kA 2 Pole 500Vdc Key Product Features

Visual Status Windows: Employs clear mechanical indicator flags where Green indicates the module is healthy and Red indicates module failure , signaling it must be replaced.
Modular Plug-In Design: The internal protection cartridges (high-energy Metal Oxide Varistors / MOVs) feature plug-in clips . When a cartridge burns out (turns red), you can pull it out and replace it without disconnecting the underlying system wiring.
Built-in Flash Barrier: Integrates physical barriers and heat dissipation holes to prevent arc propagation and fire damage during extreme electrical impacts.
Thermal Isolation Disconnectors: Disconnects the unit immediately from the circuit if it overheats or reaches its end of life, preventing secondary system short circuits.

Installation Best Practices

Parallel Wiring: The device must be wired in parallel across the positive (+) and negative (-) DC lines rather than in series.
Earthing Connection: The dedicated grounding terminal at the base of the unit must be firmly wired to your main solar grounding busbar using a low-resistance path to guarantee optimal surge discharge.
Placement Strategy: For comprehensive protection, it is recommended to install SPDs at both ends of the DC power line —one on the solar panel array side (often inside a combiner box) and another close to the inverter DC input side.
Physical Clearance: Ensure a minimum 10mm safety distance is kept between the SPD and any other grounded components or enclosures to limit heat distribution.