Handles surges in LV circuits

Improved system reliability

First low-voltage distribution-class arrester

Protecting LV circuits

Indoor and outdoor applications

Multiple design options

Core features

VariSTAR Storm Trapper secondary class MOV surge arrester is designed to provide overvoltage protection for low voltage equipment and distribution circuits
Type L secondary arresters protect street-lighting controls, low-voltage relays, railroad-signal circuits and circuits used for fire alarms, remote metering and airport lighting
Protective gaps are auxiliary devices which serve to isolate electrical equipment during normal service conditions and provide a path to ground for surge current during arrester operations
Type S4 secondary arresters are designed to provide protection of low-voltage equipment, secondary distribution circuits, control circuits and signal circuits up to 650 Vac.
Indoor and outdoor industrial applications from 175 to 650 VAC
Meet all requirements for light duty distribution class arresters per IEEE Std C62.11 standard

Secondary (LV) arresters

This video discusses the core features and key benefits of Eaton’s Cooper Power series secondary (LV) arresters.

Pioneering low-voltage, distribution-class arrester technology

The Storm Trapper H.E. arrester was the industry's first low-voltage distribution-class arrester, meeting requirements for light-duty distribution class arresters per IEEE Std C62.11 -1993 standard.

Reduced transformer failure rates

Years of research on low-voltage secondary circuits concluded that the types and magnitudes of surges possible in these circuits can be severe. The Storm Trapper H.E. arrester is designed to reliably handle these stresses, helping to reduce transformer failure rates when surge protection is added to transformer secondary bushings.

Specifications

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Ratings

Type L

System Voltage: 120, 120/240, 120/240 volts Y
Rating: 175 volts*

Type S4

System Voltage: 240, 480, 600 volts
Rating: 650 volt*

Protective gap

System voltage: 2.4 kV∆, 6kV Rating*
System voltage: 4.16Y/2.4 kV, 11 kV Rating*
System voltage: 4.8 kV∆, 11 kV Rating*
System voltage: 8.32Y/2.4 kV, 15 kV Rating*
System voltage: 6.9 kV∆, 15 kV Rating*
System voltage: 12.47Y/7.2 kV, 15 kV Rating*
System voltage: 13.2 kV∆, 15 kV Rating*
System voltage: 14.4 kV∆, 15 kV Rating*

*An arrester rating represents the maximum line-to-ground voltage to which the arrester should be subjected. Since surge arresters are inherently sensitive to overvoltages, they should never be subjected to 60 Hz voltages above their rated voltage, even during momentary abnormal conditions. If such a condition is likely, a special system study may be necessary, and a higher rated arrester
may be required.

VariSTAR Storm Trapper secondary class MOV surge arrester

175-Volt arresters: The 175-volt arrester is designed for single-phase 120-volt applications. It is available as single-, double-, or triple-pole for two-, three-, or four-wire systems.
350-Volt arresters: The 350-volt single-pole arrester is designed for individual application at single voltage source installations with line-to-ground voltages greater than 175 volts and less than 350 volts. The 350-volt two-pole device is designed for common three-wire 480/240 volt applications. The 350-volt three-pole unit protects motors and other equipment on three-phase systems which can have a number of system voltages between 175 and 350 volts.
650-Volt arresters: The 650-volt arrester is designed for commercial/industrial applications where the line-to-ground system voltage is greater than 350 volts, but not more than 650 volts

Download Links

Brochures

Commercial and industrial medium-voltage electrical distribution products brochure

This brochure outlines Eaton’s Cooper Power series broad commercial and industrial medium-voltage transformer, switchgear, fuse, sectionalizer, switch, regulator, tool, OEM equipment, cable accessory, lightning arrester, power capacitor and recloser offerings.

(PDF 2 MB , 24/01/2023)
Storm season rapid response information

Eaton’s Cooper Power series product team works together with the engineering services team to provide a full storm response procedure to quickly ramp up operations in anticipation of storm impact for fast product shipment and remediation of damaged apparatus during storm recovery.

(PDF 619 KB , 25/07/2019)

Catalogs

Secondary arresters and protective gaps catalog

This catalog describes features and ordering information for Eaton’s Cooper Power series products that provide surge arrester protection on low-voltage circuits.

(PDF 708 KB , 28/02/2015)
Storm Trapper H.E. (high energy) low-voltage distribution-class MOV surge arrester catalog

This catalog describes features and ordering information for Eaton’s Cooper Power series Storm Trapper H.E. (High Energy), low-voltage distribution-class surge arresters which provide surge protection at distribution transformer secondary bushings.

(PDF 412 KB , 30/04/2015)
VariSTAR Storm Trapper secondary class MOV surge arrester catalog

This catalog describes features and ordering information for Eaton's Cooper Power series VariSTAR Storm Trapper secondary class MOV surge arrester which is designed to provide overvoltage protection for low-voltage equipment and distribution circuits.

(PDF 194 KB , 16/08/2015)

Infographics and listicles

Line installation and protective equipment product application poster

This poster shows Eaton's Cooper Power series LIPE product application for overhead and underground distribution systems.

(PDF 360 KB , 19/04/2019)

Installation instructions

MOV Storm Trapper secondary class surge arrester installation instructions

This manual covers installation of Eaton's Cooper Power series MOV Storm Trapper secondary class surge arrester.

(PDF 680 KB , 31/10/2016)

Product specification guides

Line installation and protective equipment specifiers guide

This document is Eaton's Cooper Power series line installation and protective equipment specifiers guide which is the master catalog for 5 kV thru 35 kV electrical distribution systems.

(PDF 3 MB , 06/12/2023)
Overhead line installation and protective equipment specifiers guide

This document is the master catalog for Eaton's Cooper Power series overhead line installation and protective equipment for 5 kV-35 kV electrical distribution systems.

(PDF 6 MB , 31/08/2023)

Visit this page for information on earlier models.

Additional literature

Learn about the fundamentals of surge arresters

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Secondary (LV) arresters

Core features

Secondary (LV) arresters

Pioneering low-voltage, distribution-class arrester technology

Reduced transformer failure rates

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Ratings

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Catalogs

Infographics and listicles

Installation instructions

Product specification guides

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New to surge and lightning arresters?

Secondary (LV) arresters

Core features

Secondary (LV) arresters

Pioneering low-voltage, distribution-class arrester technology

Reduced transformer failure rates

Filters

Try another search

Ratings

Brochures

Catalogs

Infographics and listicles

Installation instructions

Product specification guides

Not finding the literature you need?

New to surge and lightning arresters?

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