T1-36 mm Integrated Surge Protective Device
T1 class direct lightning strike protection with maximum impulse current 25kA (10/350μs); 36mm wide integrated housing with varistor, spark gap or combined options.
Overview
Key Features
Direct Strike Protection
Maximum impulse current Iimp 25kA, withstanding direct lightning current impulses
Nanosecond Response
Response time ≤50ns or ≤100ns, discharging lightning current at nanosecond level
Selectable Structures
Varistor, spark gap, graphite gap and combined core structures available
Local Failure Indication
Built-in failure window, green when healthy and colour change on failure
Remote Signalling
ZLS1 series offers an optional dry contact remote alarm
Flexible Configurations
1P/2P/3P/4P and 1+NPE/3+NPE, compatible with AC and DC systems
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 |
| 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 |
| Core structure | V varistor / F spark gap / G graphite gap / BC combined |
| 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
Which models make up the T1-36 integrated series?
Six models are available: 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 and ZL1-BC-15/275-1+NPE. They cover varistor, spark gap and combined structures.
What is the maximum impulse current of the series?
Iimp ranges from 12.5kA and 15kA up to 25kA on the 10/350μs waveform. This rating covers direct lightning strike energy discharge at the entry of the installation.
What are the voltage protection level and response time?
Up is 1.5kV or 2.5kV, and response time is ≤50ns or ≤100ns. The values differ by model and by core structure, so selection follows the distribution system and the protected equipment.
What are the mounting and environmental conditions?
Mounting is on a standard 35mm rail, operating temperature is -40℃ to +70℃ and humidity is 5% to 95%. The housing is PBT G20 V0 flame-retardant material and the protection degree is IP20.
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 for a specific model and quantity.