Dehn, DR Modular Surge Protector 440V ac Maximum Voltage Rating 8 kA Maximum Surge Current Surge Arrester
- RS stock no.:
- 768-1798
- Mfr. Part No.:
- DR M 4P 255
- Manufacturer:
- Dehn
Bulk discount available
Subtotal (1 unit)*
R 7 077,18
(exc. VAT)
R 8 138,76
(inc. VAT)
FREE delivery for orders over R 1,500.00
Temporarily out of stock
- 1 unit(s) shipping from 13 May 2026
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Units | Per unit |
|---|---|
| 1 - 4 | R 7,077.18 |
| 5 + | R 6,900.25 |
*price indicative
- RS stock no.:
- 768-1798
- Mfr. Part No.:
- DR M 4P 255
- Manufacturer:
- Dehn
Specification
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Dehn | |
| Suppressor Type | Surge Arrester | |
| Product Type | Modular Surge Protector | |
| Maximum Voltage | 440V ac | |
| Mount Type | DIN Rail | |
| Maximum Surge Current | 8kA | |
| Series | DR | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | 80°C | |
| Standards/Approvals | KEMA, UL, RoHS, VDE | |
| Length | 90mm | |
| Depth | 36mm | |
| Height | 66mm | |
| Hazardous Area Certification | No | |
| Select all | ||
|---|---|---|
Brand Dehn | ||
Suppressor Type Surge Arrester | ||
Product Type Modular Surge Protector | ||
Maximum Voltage 440V ac | ||
Mount Type DIN Rail | ||
Maximum Surge Current 8kA | ||
Series DR | ||
Minimum Operating Temperature -40°C | ||
Maximum Operating Temperature 80°C | ||
Standards/Approvals KEMA, UL, RoHS, VDE | ||
Length 90mm | ||
Depth 36mm | ||
Height 66mm | ||
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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