Function and Usage
NU210-40 is a surge protector with short-circuit protection. It is connected to circuits and equipment with an AC rated voltage of 230/400V, 50Hz/60Hz. It can protect terminal electrical equipment from the impact of induced lightning. It has the function of protecting against indirect lightning, direct lightning effects, or other transient overvoltage surges, as well as self-protection functions against overcurrent caused by internal nonlinear components failing due to short circuits. It complies with the standards: GB/T 18802.11, IEC 61643-11.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Technical Parameter Items | Maximum Discharge Current | 40kA |
| Maximum Continuous Operating Voltage | 350VAC, 440VAC |
| Rated Discharge Current | 20kA |
| Voltage Protection Level | 2.1kV, 2.3kV |
| Poles | 1P, 2P, 4P |
| Connecting Wires | ≤25mm² |
| Tightening Torque | 2.5N·m |
| Protection Level | IP20 |
| Dimensions | See Figure 1, Figure 2 |
| Communication and Indication | Communication functions can be selected as needed; indication functions are shown in the product indicator window | |
| Operating Status / Fault Indication | Green (remote signal terminal 11 → 14 normally open, 11 → 12 normally closed) / Red (remote signal terminal 11 → 14 normally closed, 11 → 12 normally open) |
| Communication Terminal Wiring Capacity | Maximum 1.5mm² |
| Communication Contact Switching Capacity | 250V/0.5A; 75V/0.5A |
