T2 Shield-Link Surge Protective Device
Shield-link T2 surge protective device with multi-pole one-piece construction for better inter-phase equipotential bonding; used for first-level shield-link protection at sub-distribution and equipment ends.
Overview
Key Features
Direct Strike Coordination
Forms two-stage discharge together with T1 devices
Nanosecond Response
≤50ns clamping of overvoltages
Shield-Link Structure
Multi-pole one-piece body, better inter-phase equipotential bonding
Local Failure Indication
Window colour change for identification
Remote Signalling
Optional dry contact on ZLS2 series
Flexible Configurations
2P/4P with 275V/385V combinations
Technical Data
| Protection class | T2 |
| Structure | Shield-link one-piece multi-pole |
| Maximum continuous operating voltage Uc | 275V / 385V |
| Nominal discharge current In | 10 / 20 / 30 / 40kA |
| Maximum discharge current Imax | 20 / 40 / 60 / 80 / 100kA |
| Voltage protection level Up | 1.5kV / 1.8kV |
| Response time | ≤50ns |
| Poles | 2P / 4P |
| Mounting | Standard 35mm DIN rail |
| Remote signalling | Optional on ZLS2 series |
| Protection degree | IP20 |
Models & Selection
| Parameter | ZL2-V-x/275-4P | ZLS2-V-x/385-4P | ZL2-V-x/275-2P | ZLS2-V-x/385-2P |
|---|---|---|---|---|
| Protection class | T2 | T2 | T2 | T2 |
| Maximum continuous operating voltage Uc | 275V | 385V | 275V | 385V |
| Nominal discharge current In | 10/20/30/40kA | 10/20/30/40kA | 10/20/30/40kA | 10/20/30/40kA |
| Maximum discharge current Imax | 20/40/60/80/100kA | 20/40/60/80/100kA | 20/40/60/80/100kA | 20/40/60/80/100kA |
| Voltage protection level Up | 1.5kV | 1.8kV | 1.5kV | 1.8kV |
| Response time | ≤50ns | ≤50ns | ≤50ns | ≤50ns |
| Poles | 4P | 4P | 2P | 2P |
| Dimensions (L×W×H mm) | 72×83×67 | 72×83×67 | 36×83×67 | 36×83×67 |
Model naming rule：ZL2-V-x/275-4P ZLS2-V-x/385-4P ZL2-V-x/275-2P ZLS2-V-x/385-2P
Installation
FAQ
How does the shield-link body differ from ordinary plug-in units?
The shield-link body builds several poles into one piece, giving better inter-phase equipotential bonding and consistency. Plug-in units use independent modules mounted on a base.
Can the device be used alone as a first-level protector?
It is designed to T2 class and is normally combined with a T1 device to form two-stage protection. Where it is used alone, lightning risk and surge current must be calculated.
What are the Up and response time values?
Up is 1.5kV at 275V and 1.8kV at 385V. Response time is ≤50ns for the series, and local failure indication is provided on the device.
What are the mounting and signalling options?
Mounting is on a standard 35mm rail, and the ZLS2 series offers an optional dry signalling contact for remote failure reporting.
How is the product certified and quoted?
Certification is CE / CMA / CNAS accredited laboratory. Price is Request a quote, with lead time and configuration agreed per project.