Dehn, DR Modular Surge Protector 440V ac Maximum Voltage Rating 8 kA Maximum Surge Current Surge Arrester

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SGD584.28

(exc. GST)

SGD636.87

(inc. GST)

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RS Stock No.:
768-1794
Mfr. Part No.:
DR M 4P 255 FM
Manufacturer:
Dehn
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Brand

Dehn

Product Type

Modular Surge Protector

Suppressor Type

Surge Arrester

Maximum Voltage

440V ac

Mount Type

DIN Rail

Maximum Surge Current

8kA

Series

DR

Minimum Operating Temperature

-40°C

Maximum Operating Temperature

80°C

Depth

36mm

Height

66mm

Length

90mm

Standards/Approvals

KEMA, RoHS, VDE, UL

Hazardous Area Certification

No

COO (Country of Origin):
DE

DEHNrail Modular Surge Arresters Type 3


Type 3 surge devices

Compact DIN rail design comprising of base and plug in protection module

High discharge current performance using varistor and spark gap circuit

Energy coordination with other Dehn Redline products in accordance with BS7671 amendment 1

Status indication using Thermo Dynamic Control for monitoring of the SPD

Tool less replacement of the plugs for repair and test functions

Surge Protection Devices, SPDs (DIN-rail)


Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage spikes are usually caused by lightning strikes and can reach up to 6000V, with current surges of over 3000A. The maximum size of the let-through voltage and current inrush depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.

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