The TBC TC2-600VDC is a purpose-built DC Surge Protective Device (SPD) designed to safeguard photovoltaic solar installations and DC power distribution systems from the damaging effects of transient overvoltage events. As part of TBC's professional surge protection product line, this device addresses the specific demands of renewable energy infrastructure where reliable, continuous operation is critical.
Utilizing high-performance Metal Oxide Varistor (MOV) technology, the TC2-600VDC delivers a maximum discharge current of 40kA and an ultra-fast response time of ≤25ns, ensuring sensitive equipment such as solar inverters and combiner box electronics are protected before damage can occur. Its plug-in modular design minimizes system downtime during maintenance or module replacement.
Targeted at solar energy installers, electrical contractors, and industrial system integrators, the TC2-600VDC is the dependable choice for protecting DC-side assets in commercial, industrial, and utility-scale photovoltaic projects.
The TC2-600VDC DC Surge Protective Device is constructed to meet the rigorous demands of modern photovoltaic power systems, where DC-side surge events pose a significant risk to inverters, monitoring equipment, and associated electronics. The device is classified as a Type 2 SPD, making it suitable for installation at the main distribution point or at sub-distribution level within a PV system, typically near the inverter or DC combiner box.
The housing is manufactured from flame retardant thermoplastic, providing robust mechanical protection and inherent resistance to ignition under abnormal electrical conditions. The plug-in module architecture is a key design advantage: when the visual indicator signals end-of-life, the module can be replaced rapidly without rewiring, reducing maintenance costs and system downtime. The IP20 degree of protection designates the device for indoor installation environments.
With a voltage protection level (Up) of 2.2kV and support for both common mode and differential mode protection, the TC2-600VDC delivers well-rounded surge suppression performance. Its compliance with IEC 61643-31 and EN 61643-31 provides assurance to specifiers and end users that the product meets internationally recognized standards for DC surge protective devices in photovoltaic applications.
The TC2-600VDC employs Metal Oxide Varistor (MOV) technology as its primary surge suppression element. MOVs exhibit a highly nonlinear voltage-current characteristic: under normal operating conditions they present a high impedance state, allowing the DC system to function without interference. When a transient overvoltage event occurs — such as a lightning-induced surge or a switching transient — the MOV transitions rapidly to a low-impedance conduction state, diverting surge energy away from protected equipment and clamping the voltage to the rated protection level (Up) of 2.2kV within a response time of ≤25ns.
The device is configured for 2-pole operation and is installed between the PV positive and negative conductors and the grounding system, providing both common mode and differential mode protection paths. The plug-in module design isolates the MOV element from the base unit, enabling safe and efficient replacement once the thermal disconnector activates and the visual indicator changes from green to red, signaling that the protective element has reached the end of its service life.
| Product Type | DC Surge Protective Device (SPD) |
|---|---|
| Model | TC2-600VDC |
| SPD Type | Type 2 |
| System Application | Photovoltaic (PV) DC System |
| Maximum Continuous Operating Voltage (Ucpv) | 600V DC |
| Nominal Discharge Current (In) | 20kA |
| Maximum Discharge Current (Imax) | 40kA |
| Voltage Protection Level (Up) | 2.2kV |
| Response Time | ≤25ns |
| Protection Mode | Common Mode / Differential Mode |
| Technology | MOV (Metal Oxide Varistor) |
| Pole Configuration | 2 Pole |
| Mounting Type | 35mm DIN Rail |
| Degree of Protection | IP20 |
| Installation Environment | Indoor |
| Ambient Operating Temperature | -40°C to +80°C |
| Relative Humidity | ≤95% (non-condensing) |
| Housing Material | Flame Retardant Thermoplastic |
| Visual Indication | Green = Normal Operation / Red = Replace Module |
| Dimensions (H × W × D) | 90mm × 35mm × 66mm |
| Weight | 28gm |
| Standards Compliance | IEC 61643-31, EN 61643-31 |
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