FV50B/4-XXX 220v 3 phase surge protection device

FV50B/4-XXX

FATECH FV50B/4-XXX series are Class I Type 1 four‑pole AC surge protective devices suitable for TT and TN power systems. With Iimp 50kA, In 50kA, fast response and mechanical status indication, they provide high‑energy lightning surge protection for three‑phase distribution networks, supporting DIN‑rail installation and optional remote contact for reliable industrial and building power safety.

-Apopt unique designed seal construction with multilayer spark gap,no spark emission outside the housing.

-With working status indication window,and remote control contacts.

-Max.continuos operating voltage (Uc) 150v,255v,275v,320v,385v for your option.

-Mainly used in lightning protection zone (LPZ) 0 to 1,widely used in building entrance lines elevator,mineral,and so on.

-3 phase,4 poles.

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Advantage

Stable & Reliable Surge Protection

Adopts high-quality core components and precise circuit design, providing stable and consistent performance to effectively suppress lightning surges and transient overvoltage, ensuring long-term safe operation of equipment.

Wide Application Compatibility

Covers AC, DC, photovoltaic, PoE network, and signal surge protection solutions, widely used in solar systems, LED lighting, industrial control, security monitoring, buildings and infrastructure.

Durable Structure & Easy Installation

Features rugged housing (including aluminum enclosure for outdoor models), DIN‑rail mounting, pluggable design and compact size for easy installation, wiring and maintenance in various working environments.

Certified Quality & Cost-Effective

Most core products have passed TUV, CE and international safety certifications, with strict quality control. Stable performance and reasonable pricing bring high cost-performance for global projects.

FV50B/4-150

UN : 110/220V

Uc : 150V

In : 50kA

Iimp : 50kA

Up ≤ 1.8kV

FV50B/4-255

UN : 220/380V

Uc : 255V

In : 50kA

Iimp : 50kA

Up ≤ 1.8kV

FV50B/4-275

UN : 220/380V

Uc : 275V

In : 50kA

Iimp : 50kA

Up ≤ 1.8kV

FV50B/4-320

UN : 220/380V

Uc : 320V

In : 50kA

Iimp : 50kA

Up ≤ 2.0kV

FV50B/4-385

UN : 220/380V

Uc : 385V

In : 50kA

Iimp : 50kA

Up ≤ 2.0kV

Coding system of surge suppressor FV50B/4-XXX

Dimension and circuit drawing of surge suppressor FV50B/4-XXX

Installation of surge suppressor FV50B/4-XXX

Electrical parameters

Model. No.		FV50B/4-150(S)	FV50B/4-255(S)	FV50B/4-275(S)	FV50B/4-320(S)	FV50B/4-385(S)
Test class IEC/EN/VDE		Class I/B/T1
Type of Network		TT ，TN
Protection Mode		L1,L2,L3,N-PE
Nominalvoltage 50(60)Hz UN		110/220V	220/380V	220/380V	220/380V	220/380V
Rated Voltage (Max. Cont. Operating Voltage) Uc		150V	255V	275V	320V	385V
Impulse currenr(10/350us)Iimp		50kA
Nominal discharge current (8/20us) In		50kA
Voltage protective level Up		≤1.8kV	≤1.8kV	≤1.8kV	≤2.0kV	≤2.0kV
Response time tA		≤100ns
Recommended back-up fuse		500A
Isolation resistance		＞102MΩ
I/O Connections	L-N	Multi core wire:10mm2~25mm2
	PE	Multi core wire:＞16mm2
Mounting		35mm Symmetrical rail(EN50022/DIN46277-3)
Operation temperature range/humidity /altitude		-40°C~+80°C / 30%~90% / 3000m
Degree of protection		IP20
Housing material		UL94V-0
Disconnectionindicator		Mechanical indicator (Green：OK Red: replace)
Remote controlcontact		Optional

Searching For A Reliable SPD & Surge Protector To Secure Your Projects?

MOQ is flexible and can be negotiated. Depending on your system solution, Accept Customization for Small Orders. Design products as your specification. Professional protection and stable performance for global projects. Submit an online message. Reply within 24 hours by email.

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