T1-36 mm Split Surge Protective Device
Split construction for T1 class direct lightning strike protection: the SPD module separates from the base so modules are replaced without rewiring, in a 36mm width that fits compact cabinets.
Overview
Key Features
Direct Strike Protection
Iimp up to 25kA (10/350μs)
Nanosecond Response
≤50ns / ≤100ns lightning current discharge
Pluggable Split Design
Module separates from the base, replacement without rewiring
Local Failure Indication
Failure window changes colour, visible during inspection rounds
Remote Signalling
ZLS1 series supports dry contact remote alarm
Compact 36mm
Narrow body fits distribution cabinets with limited space
Technical Data
| Operating voltage | AC 220V |
| Protection class | T1 |
| Maximum continuous operating voltage Uc | 275 / 320 / 385V AC |
| Maximum impulse current Iimp | 12.5 / 15 / 25kA (10/350μs) |
| Voltage protection level Up | 1.5kV / 2.5kV |
| Response time | ≤50ns / ≤100ns |
| Mounting | Standard 35mm DIN rail (split base) |
| Operating temperature | -40℃ ~ +70℃ |
| Operating humidity | 5% ~ 95% |
| Housing material | Thermoplastic flame-retardant PBT G20 V0 |
| Protection degree | IP20 |
| Protection modes | 1P / 2P / 3P / 4P / 1+NPE / 3+NPE |
| Replacement | Pluggable module replacement, base keeps wiring |
| Remote signalling | Dry signalling contact on ZLS1 series |
Models & Selection
| Parameter | ZL1-V-12/275-4P | ZLS1-V-12/275-2P | ZL1-F-15/275-4P | ZL1-BC-25/320-3+NPE | ZL1-BC-25/385-3+NPE | ZL1-BC-15/275-1+NPE |
|---|---|---|---|---|---|---|
| Protection class | T1 | T1 | T1 | T1 | T1 | T1 |
| Maximum continuous operating voltage Uc | 275V | 275V | 320V | 385V | 385V | 275V |
| Maximum impulse current Iimp | 12.5kA | 15kA | 25kA | 25kA | 25kA | 15kA |
| Voltage protection level Up | 1.5kV | 2.5kV | 2.5kV | 2.5kV | 2.5kV | 2.5kV |
| Response time | ≤50ns | ≤100ns | ≤50ns | ≤50ns | ≤50ns | ≤100ns |
| Poles | 4P | 2P | 4P | 3+NPE | 3+NPE | 1+NPE |
| Dimensions (L×W×H mm) | 72×83×88 | 36×83×88 | 72×90×71 | 72×90×71 | 144×91×65 | 36×90×71 |
Model naming rule：ZL1-V-12/275-4P ZLS1-V-12/275-2P ZL1-F-15/275-4P ZL1-BC-25/320-3+NPE ZL1-BC-25/385-3+NPE ZL1-BC-15/275-1+NPE
Installation
FAQ
What is the difference between split and integrated types?
In the split type the SPD module separates from the base, so the base keeps its wiring when a module is replaced, while the integrated type is replaced as a whole unit. Models, Iimp and Up ratings are consistent between the two.
How do the models correspond to protection class?
All six models are T1 class with Iimp from 12.5kA to 25kA and Up from 1.5kV to 2.5kV. They cover varistor, spark gap and combined structures.
Must the circuit be de-energised before a module is replaced?
The circuit must still be isolated and proved dead according to procedure before a module is replaced. The pluggable structure only reduces the work of disconnecting and reconnecting conductors.
What are the mounting and dimension figures?
Mounting is on a standard 35mm rail. Dimensions are 72×83×88mm for the 4P model and 36×83×88mm for the 2P model, and the figures vary by model within the series.
How is the product certified and quoted?
Certification is CE / CMA / CNAS accredited laboratory for the series. Price and lead time are quoted per project; Request a quote with the model and quantity required.