Smart Lightning Protection

T1-18 mm 25kA Surge Protective Device

Name: T1-18 mm 25kA Surge Protective Device
Brand: YESLON
SKU: t1-zl1-18mm-spd
Price: 1 CNY
Availability: InStock

ZL1-V-12/275-4P

18mm narrow-body T1 class surge protective device with 18mm per pole and maximum impulse current 25kA, suited to incoming cabinets with tight space.

18mm25kA≤50ns

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Product Overview

18mm narrow-body T1 class surge protective device with 18mm per pole and maximum impulse current 25kA, suited to incoming cabinets with tight space.

Core capabilities

Narrow 18mm Body: 18mm width per pole saves rail space inside cabinets. Direct Strike Protection: Iimp up to 25kA (10/350μs). Nanosecond Response: ≤50ns / ≤100ns discharge.

Data Generated

18mm25kA≤50ns

Product Features

Narrow 18mm Body

18mm width per pole saves rail space inside cabinets

Direct Strike Protection

Iimp up to 25kA (10/350μs)

Nanosecond Response

≤50ns / ≤100ns discharge

Selectable Structures

Varistor, spark gap, graphite gap and combined types

Local Failure Indication

Failure window colour change is visible

Rail Mounting

Standard 35mm rail clip installation

System Topology

Technical Parameters

Technical Data

Operating voltage AC 220V Protection class T1 Single-pole width 18mm Maximum continuous operating voltage Uc 275 / 320 / 385V AC Maximum impulse current Iimp Up to 25kA (10/350μs) Voltage protection level Up 1.5kV / 2.5kV

Operating voltage	AC 220V
Protection class	T1
Single-pole width	18mm
Maximum continuous operating voltage Uc	275 / 320 / 385V AC
Maximum impulse current Iimp	Up to 25kA (10/350μs)
Voltage protection level Up	1.5kV / 2.5kV
Response time	≤50ns / ≤100ns
Mounting	Standard 35mm DIN rail
Operating temperature	-40℃ ~ +70℃
Housing material	Thermoplastic flame-retardant PBT G20 V0
Protection degree	IP20
Protection modes	1P / 2P / 3P / 4P / 1+NPE / 3+NPE

Installation Instructions

Standard 35 mm DIN rail mounting; terminals: supply side L1/L2/L3, N, PE, communication and signal terminals as marked on the device.

Key Points

FAQ

How does the 18mm body differ from the 36mm standard body?

The single-pole width is only 18mm, so more circuits fit on the same rail length. Electrical parameters remain T1 class with Iimp up to 25kA on the 10/350μs waveform.

How do the models map to the technical parameters?

Six models cover Iimp from 12.5kA to 25kA, Uc from 275V to 385V and Up from 1.5kV to 2.5kV. Structure and pole count vary by model.

Which installation scenarios is the device intended for?

It is intended for incoming cabinets or equipment room distribution boxes where space is limited but T1 class direct lightning strike protection is still required.

What are the installation requirements?

Mounting is on a standard 35mm rail inside a distribution cabinet. Operating temperature is -40℃ to +70℃ and the protection degree is IP20.

How is the product certified and quoted?

Certification is CE / CMA / CNAS accredited laboratory for the series. Price is Request a quote, with lead time agreed per project according to model and quantity.

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