Bourns, 1250 Surge Arrester 600V ac Maximum Voltage Rating 50 kA Maximum Surge Current 3 Pole Protector
- RS Stock No.:
- 172-9928
- Mfr. Part No.:
- 1250-3S-400
- Brand:
- Bourns
Subtotal (1 box of 3 units)*
£764.739
(exc. VAT)
£917.688
(inc. VAT)
FREE delivery for orders over £60.00
Temporarily out of stock
- 24 unit(s) shipping from 03 July 2026
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Units | Per unit | Per Box* |
|---|---|---|
| 3 + | £254.913 | £764.74 |
*price indicative
- RS Stock No.:
- 172-9928
- Mfr. Part No.:
- 1250-3S-400
- Brand:
- Bourns
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Bourns | |
| Suppressor Type | 3 Pole Protector | |
| Product Type | Surge Arrester | |
| Maximum Voltage | 600V ac | |
| Mount Type | DIN Rail | |
| Maximum Surge Current | 50kA | |
| Series | 1250 | |
| Minimum Operating Temperature | -50°C | |
| Maximum Operating Temperature | 85°C | |
| Depth | 67mm | |
| Length | 54mm | |
| Height | 90mm | |
| Standards/Approvals | IEC 61643-11, EN 61643-11 | |
| Hazardous Area Certification | No | |
| Select all | ||
|---|---|---|
Brand Bourns | ||
Suppressor Type 3 Pole Protector | ||
Product Type Surge Arrester | ||
Maximum Voltage 600V ac | ||
Mount Type DIN Rail | ||
Maximum Surge Current 50kA | ||
Series 1250 | ||
Minimum Operating Temperature -50°C | ||
Maximum Operating Temperature 85°C | ||
Depth 67mm | ||
Length 54mm | ||
Height 90mm | ||
Standards/Approvals IEC 61643-11, EN 61643-11 | ||
Hazardous Area Certification No | ||
- COO (Country of Origin):
- CN
Bourns 1250 series Surge Protection Devices
50 kA max. discharge current rating
Multi-pole uni-block design
DIN Rail mountable
UL 60691 compliant integrated thermal disconnect
Visual fault indicator
Remote signalling capability
Compact design ideal for limited spaces
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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