ZL(S)1 Class-I Surge Arrester
ZL1 Series
Class I direct-strike protection, max impulse current 25kA, 10/350us waveform, MOV/gas-tube/composite selectable, response <=50ns, remote-signaling alarm.
Product Overview
ZL(S)1 is a Type 1 surge protective device for discharging direct lightning and induced lightning overvoltages in low-voltage power distribution systems. It offers multiple structures including varistor and spark gap, with a maximum impulse current of 25kA and response time as fast as ≤50ns, suitable for highly exposed locations such as building main distribution entrances. Uc covers AC 255~760V and DC 500~2000V, adapting to multiple power supply systems. Models with remote signal can report failure status remotely, and with local window color-change indication, facilitating inspection and centralized operations and maintenance.
Core Capabilities
Top-tier Type 1 protection: complies with Type 1 surge protection standards, with a maximum impulse current of 25kA to discharge high-energy direct and induced lightning. Multiple structures available: offers varistor, spark gap, and composite core structures to suit different grid characteristics and protection preferences. Ultra-fast response: response time as fast as ≤50ns, discharging surges at nanosecond speed and effectively clamping overvoltages. Remote alarm via remote signal: models with "S" feature built-in dry contact remote signal terminals that can be connected to monitoring systems for remote failure status reporting. Product Features
Data Generated
Product Features
Top-Tier Type 1 Protection
Complies with Type 1 surge protection standards, with a maximum impulse current of 25kA to discharge high-energy direct and induced lightning, suitable for highly exposed locations such as building main distribution entrances.
Multiple Structures Available
Offers varistor, spark gap, composite, and other core structures to suit different grid characteristics and protection preferences, flexibly addressing various application scenarios.
Wide Voltage Coverage
Uc range covers AC 255~760V and DC 500~2000V, compatible with multiple power supply voltage levels to meet the requirements of different domestic and international distribution systems.
Ultra-Fast Response Protection
Response time as fast as ≤50ns, discharging surges at nanosecond speed and effectively clamping overvoltages, significantly reducing the risk of surge damage to downstream equipment.
Remote Signal Alarm
Models with "S" feature built-in dry contact remote signal terminals that can be connected to monitoring systems to report failure status remotely, enabling centralized operations and maintenance of the power distribution system.
Local Status Indication
Built-in window color-change indication allows inspection personnel to visually check SPD failure status, working with the remote signal function to deliver dual local + remote operations and maintenance. Selection Guide
System Topology
Selection Guide
Model Naming Rules
ZLx - Structure - Iimp / Uc - Protection mode ZLx Product category 1: Type 1 power surge protector; S1: Type 1 power surge protector (remote signal); 2: Type 2 power surge protector; S2: Type 2 power surge protector (remote signal); 3: Type 3 protector; 4: signal protector Structure Core structure V: varistor; F: spark gap; G: graphite gap; BC: composite Iimp Maximum impulse current 6kA (6.25kA); 12kA (12.5kA); 15kA; 25kA Uc Maximum continuous operating voltage AC: 255/275/320/385/440/690/760V; DC: 500/600/800/1000/1200/1500/1800/2000V Mode Protection mode AC: 1P; 2P; 3P; 4P; 1+NPE; 3+NPE; DC: U; Y Imax Maximum discharge current 20kA; 40kA; 60kA; 80kA; 100kA Model Structure Number of poles Uc Iimp Up Response time Dimensions (L×W×H mm) Local indication Remote signal ZL1-V-12/275-4P Varistor 4P 275V 12.5kA 1.5kV ≤50ns 72×83×88 √ --- ZLS1-V-12/275-2P Varistor 2P 275V 12.5kA 2.5kV ≤100ns 36×83×88 √ √ ZL1-F-15/275-4P Spark gap 4P 275V 15kA 2.5kV ≤100ns 72×90×71 √ --- ZL1-BC-25/320-3+NPE Composite 3+NPE 320V 25kA 2.5kV ≤100ns 72×90×71 √ --- ZL1-BC-25/385-3+NPE Composite 3+NPE 385V 25kA 2.5kV ≤100ns 144×91×65 √ --- ZL1-BC-15/275-1+NPE Composite 1+NPE 275V 15kA 2.5kV ≤100ns 36×90×71 √ --- Technical Parameters
| Model | Structure / Number of poles / Uc / Iimp / Up / Response time / Dimensions (L×W×H mm) / Local indication / Remote signal |
| ZL1-V-12/275-4P | Varistor / 4P / 275V / 12.5kA / 1.5kV / ≤50ns / 72×83×88 / √ / --- |
| ZLS1-V-12/275-2P | Varistor / 2P / 275V / 12.5kA / 2.5kV / ≤100ns / 36×83×88 / √ / √ |
| ZL1-F-15/275-4P | Spark gap / 4P / 275V / 15kA / 2.5kV / ≤100ns / 72×90×71 / √ / --- |
| ZL1-BC-25/320-3+NPE | Composite / 3+NPE / 320V / 25kA / 2.5kV / ≤100ns / 72×90×71 / √ / --- |
| ZL1-BC-25/385-3+NPE | Composite / 3+NPE / 385V / 25kA / 2.5kV / ≤100ns / 144×91×65 / √ / --- |
| ZL1-BC-15/275-1+NPE | Composite / 1+NPE / 275V / 15kA / 2.5kV / ≤100ns / 36×90×71 / √ / --- |
Technical Parameters
Basic Parameters
Operating voltage AC 220V Installation method Standard 35mm DIN-rail mounting Operating temperature -40℃~70℃ Operating humidity 5%~95% Housing material Thermoplastic flame-retardant material PBT G20 V0 Protection rating IP20
| Operating voltage | AC 220V |
| Installation method | Standard 35mm DIN-rail mounting |
| Operating temperature | -40℃~70℃ |
| Operating humidity | 5%~95% |
| Housing material | Thermoplastic flame-retardant material PBT G20 V0 |
| Protection rating | IP20 |
Surge Protection Parameters
Protection class T1 Maximum continuous operating voltage Uc 275V/320V/385V AC Maximum impulse current Iimp 12.5kA/15kA/25kA Voltage protection level Up 1.5kV/2.5kV Response time ≤50ns / ≤100ns 4P dimensions 72×83×88 / 72×90×71 / 144×91×65 mm 2P dimensions 36×83×88 / 36×90×71 / 72×91×65 mm 3+NPE dimensions 72×90×71 / 144×91×65 mm 1+NPE dimensions 36×90×71 mm Installation Instructions
| Protection class | T1 |
| Maximum continuous operating voltage Uc | 275V/320V/385V AC |
| Maximum impulse current Iimp | 12.5kA/15kA/25kA |
| Voltage protection level Up | 1.5kV/2.5kV |
| Response time | ≤50ns / ≤100ns |
| 4P dimensions | 72×83×88 / 72×90×71 / 144×91×65 mm |
| 2P dimensions | 36×83×88 / 36×90×71 / 72×91×65 mm |
| 3+NPE dimensions | 72×90×71 / 144×91×65 mm |
| 1+NPE dimensions | 36×90×71 mm |
Installation Instructions
a
Installation Dimension Drawing
Type 1 surge protective device installation dimension drawing b
Interface Description
Power interface definition Number Interface Definition 1 L1, L2, L3 Three-phase live wires 2 N Neutral wire 3 PE Ground wire
| Number | Interface / Definition |
| 1 | L1、L2、L3 / Three-phase live wires |
| 2 | N / Neutral wire |
| 3 | PE / Ground wire |
Key Points
Definition: The Type 1 surge protective device is a Class I SPD designed by FEXLINK for direct lightning strikes or highly exposed locations, capable of withstanding high-current surges of the 10/350μs waveform. Core capabilities: high lightning current handling capability, suitable for main protection at power incoming lines, capable of withstanding direct lightning energy, and supports coordinated cascading with Type 2 SPDs. Applicable scenarios: highly exposed locations with high lightning strike risk, such as substation incoming lines, main distribution of high-rise buildings, and important outdoor facilities. Related products: Type 2 surge protective device, FSS intelligent surge protective device, ESX intelligent edge computing gateway.
FAQ
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