Mersen Surge Protector Type 2 SPD 4 Pole 277/480 Volt 20KA TNS Remote Indication

SKU
83020155
Special Price £126.89 £105.74 Regular Price £158.60

Standard Delivery 7-10 Days

Available at LED Controls the Mersen Type 1 surge protector STPT2-40K320V-4PM has 4 poles and operates at 277/480 volts. The maximum continuous operating voltage is at 320 volts with a nominal discharge current of 20ka. The peak current can be withstood 20 times before the unit reaches end of life. These cartridges are replaceable.

This surge arrestor is din rail mountable and the live, neutral and earth contacts are clearly marked. A small phillips screwdriver is used to tighten or loosen the contacts.

Surge protection devices divert excess current to earth which prevents damage to electrical wiring and electrical shock in an over voltage event. These are also known as SPD’s. This surge protector has remote indication.

More Information
Product Image For Illustration Purposes Only
Manufacturer Mersen
Number of Poles 4 pole
Voltage 277/480V
Maximum Continuous Voltage 320V
Nominal Discharge Current 20Ka
Remote Indication Yes
System Type TNS
Product Lead Time Standard Delivery 7-10 Days
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You're reviewing:Mersen Surge Protector Type 2 SPD 4 Pole 277/480 Volt 20KA TNS Remote Indication
Mersen
(Size: 4 MB)

Protection system of coordinated stages: Type 1, 2 and 3 SPDs

The SPDs of a surge protection system must be able to withstand the discharged current and provide a Ures level (residua l voltage) lower than the Ue peak voltage that the equipment can withstand. Most of the times it is not possible to achieve this with just one SPD, especially because the intensity of the surge is not known, and because of the induction of overvoltages when conductors exceed 10m.

The optimal system of protection is the 3-STEP approach, in which successive stages are combined in the performance of high discharge capacity devices and devices with an optimal voltage protection level (low). This is addressed by the definition of "Types" or "Classes" of SPDs according to the type of transient pulses to which each protected zone in the installation is subject to.

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