The TC4-PE80K is a high-performance Type 2 (T2) AC Surge Protective Device designed to safeguard low-voltage electrical systems from the damaging effects of lightning strikes, switching transients, and other transient overvoltage events. Featuring a 3+1 protection topology, the device provides comprehensive surge suppression across all active conductors and the neutral-to-earth path, making it fully compatible with TN-S and TT power distribution systems.
Built around proven Metal Oxide Varistor (MOV) technology, the TC4-PE80K delivers a maximum discharge current of up to 80kA with a response time of 25 nanoseconds or less, ensuring sensitive downstream equipment is protected before damage can occur. Its plug-in modular design and DIN rail mounting simplify installation and future module replacement without disrupting the wider distribution system.
Targeted at electrical contractors, panel builders, and facility engineers, the TC4-PE80K is equally suited to main distribution boards in commercial buildings, industrial power systems, solar AC distribution panels, and data and telecommunications rooms where equipment continuity is critical.
The TC4-PE80K Surge Protective Device is engineered to deliver reliable, long-service-life transient overvoltage protection in low-voltage AC power systems. The 3+1 configuration provides protection across three line conductors plus the neutral-to-PE path, covering all surge propagation modes relevant to TN-S and TT earthing arrangements. Protection modes include L-N and N-PE, ensuring comprehensive coverage of both differential and common-mode transients that can enter a distribution system via the supply network or through direct and indirect lightning coupling.
The device is constructed with a flame retardant thermoplastic housing that meets the mechanical and thermal demands of industrial panel environments. The plug-in modular architecture separates the active protection elements from the base unit, allowing field technicians to swap degraded modules quickly and safely without rewiring. The integrated visual indicator window provides an immediate, tool-free assessment of protection status — a green window confirms the module is operational, while a red window signals that the module has reached its end-of-life and requires replacement.
With an IP20 degree of protection, the TC4-PE80K is designed for indoor installation within enclosed distribution boards and panels. It is recommended for mounting in parallel with the power supply system, positioned close to the main incomer of the distribution board to minimise the lead length between the SPD and the busbar, thereby reducing the inductance of the connection and maximising clamping effectiveness.
The TC4-PE80K employs Metal Oxide Varistor (MOV) technology as its primary surge suppression element. MOV components exhibit a highly non-linear voltage-current characteristic: under normal operating conditions they present a high impedance state, drawing negligible leakage current, while during a transient overvoltage event they transition rapidly to a low-impedance conduction state, diverting surge energy to earth within ≤25 nanoseconds. This clamping action limits the voltage protection level to ≤1.5kV, protecting downstream equipment insulation and sensitive electronics.
The device supports a maximum continuous operating voltage (Uc) of 320V AC on the L-N path and 255V AC on the N-PE path, with a nominal discharge current (In) of 20kA per mode and a maximum discharge current (Imax) of 80kA, ensuring the SPD can withstand multiple surge events over its service life. The 3P+PE pole configuration and parallel installation topology ensure that the SPD does not interrupt supply continuity under normal operating conditions.
| Product Type | AC Surge Protective Device (SPD) |
|---|---|
| Model | TC4-PE80K |
| SPD Type | Type 2 (T2) |
| SPD Configuration | 3+1 |
| Pole Configuration | 3P + PE |
| System Application | Low voltage AC system (TN-S / TT) |
| Maximum Continuous Operating Voltage (Uc) | 320V AC (L-N) / 255V AC (N-PE) |
| Nominal Discharge Current (In) | 20kA |
| Maximum Discharge Current (Imax) | 40kA / 80kA |
| Voltage Protection Level (Up) | ≤1.5kV |
| Response Time | ≤25ns |
| Technology | MOV (Metal Oxide Varistor) |
| Protection Mode | L-N / N-PE |
| Frequency | 50/60Hz |
| Mounting Type | 35mm DIN rail |
| Degree of Protection | IP20 |
| Ambient Operating Temperature | -40°C to +80°C |
| Relative Humidity | ≤95% (non-condensing) |
| Housing Material | Flame retardant thermoplastic |
| Status Indication | Green = Protection active / Red = Replace module |
| Installation Environment | Indoor |
| Dimensions (H × W × D) | 90mm × 73mm × 70mm |
| Standard | IEC 61643-11 |
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