TPU3-40 Surge Protective Device for AC Power Systems
Reliable AC surge protective device (SPD) for lightning surge protection and transient overvoltage protection in low-voltage distribution systems.
The TPU3-40 Series Surge Protective Device (SPD) is designed for reliable lightning surge protection in TT, IT, TN-S, TN-C, and TN-C-S power supply systems. Suitable for AC 50/60 Hz networks with a rated voltage of up to 110/230V, it is typically installed at the service entrance or on the incoming side of a low-voltage distribution board to divert lightning surge currents and reduce transient overvoltage damage. With a maximum discharge capacity of up to 80 kA, the TPU3-40 SPD helps protect electrical equipment and building power systems while improving the safety and stability of power distribution. It complies with IEC 61643-11.
General
- Installation
Compact 18 mm module width saves space and allows quick installation on a 35 mm DIN rail.
- Key Features
1.Sealed design to reduce arc leakage. 2.Modular structure with integrated appearance. 3.Iimp 12.5 kA / 15 kA and fast
response. 4.High-energy graphite for stable performance. 5.Standard 35 mm DIN rail mounting.
- Product Advantages
1.High lightning current discharge capacity. 2.Safe sealed structure with no leakage arc. 3.No follow current for
improved safety. 4.No grounding jumper required. 5.Supports coordinated two-stage surge protection.
- Operating Conditions
1.The protective device does not require adjustment after installation. 2.When installed correctly, it will
automatically protect the power grid during operation. 3.The module status indicator should be inspected regularly
during service. If the red fuse indicator lights up, the faulty module should be replaced promptly.
Type designation
| TP | U3 | Level | Current |
| Company code | Series code | □□□ | □□□ |
| TP | U3 | I+II: T1(10/350μs) + T2(8/20μs) T2 | Lightning impulse cur rent(10/350μs): 12.5kA,15kA,
Max effective current(8/20μs): 20kA,40kA,60kA,80kA |
Technical data
| Type | Rated operating voltage (Un) | Max continuous operating voltage Uc(V) | Protection level UP(KV) | Nominal operating currentin 8/20us (kA) | Max effective current 8/20us (kA) | Lightning impulse current 10/350us (kA) | Response time ns | Operating temp erature |
| TPU3 | 110V/230V | 275 | 0.7 | 5 | 10 | / | <25 | -40~+80°C |
| 440 | 1.0 | / | ||||||
| 275 | 1.2 | 10 | 20 | / | ||||
| 440 | 1.5 | / | ||||||
| 275 | 1.5 | 20 | 40 | / | ||||
| 440 | 2.2 | / | ||||||
| 275 | 1.8 | 30 | 60 | / | ||||
| 440 | 2.4 | / | ||||||
| 275 | 2.0 | 40 | 80 | / | ||||
| 440 | 2.5 | / | ||||||
| 275 | 1.5 | / | / | 12.5 | <100 | |||
| 385 | 2.5 | / | / | |||||
| 275 | 2.0 | / | / | 15 | ||||
| 385 | 2.5 | / | / |
| Index | Code | |
| N-PE/12.5 | N-PE/15 | |
| continuous ooperating voltage Uc(V) | 255V/280V/385V | |
| protection level UP(KV) | ≤1.5KV≤2.0KV≤2.5 | |
| Nominal operating currentin 8/20us (KA) | / | / |
| Lightning impulse current 10/350us (KA) | 12.5 | 15 |
| Response Time ns | <100ns | |
| Color | Blue/Wie | |
Overall and mounting dimensions(mm)
Main constitution and working principle
SPD Wiring Diagram
