Transient Voltage Surge Suppressors – SES200


Transient Voltage Surge Suppressors - SES200

The SES200 series of Transient Voltage Surge Suppressors deliver specification grade performance and features at an affordable price. The versatile and compact design provides high quality protection for a wide variety of commercial and industrial applications where sensitive electronic equipment is to be protected.

Internal electronics continuously monitor SPD protection, and the status is displayed on 5 segment LED bar graphs. Alarm contacts for remote monitoring are a standard feature.

The SES200 provides up to 200kA 8/20µs per mode of surge material, making it ideal for the protection of service entrance panels and helping to ensure a long operational life under severe lightning conditions.

The replaceable surge modules provide protection to L-N and N-G modes, delivering effective protection from both common mode and differential transients in single phase and three phase WYE systems. Models for grounded delta power systems provide L-L protection.

Transient Discriminating (TD) Technology, which meets the safety standards of UL®1449 Edition 3, provides a superior life by eliminating the common temporary over-voltage failure mode of most SPDs.

The SES is designed to mount adjacent to the service entrance panel with the connection being made via a small length of conduit.


  • 200kA 8/20µs primary protection – rated for service entrance applications
  • NEMA-4X enclosure – for harsh environments
  • Internal high interrupt capacity fusing – for added safety
  • Modular design – allows easy replacement of surge modules
  • Built in disconnect and fusing eliminates need for external fusing
  • Transient Discriminating (TD) Technology – provides increased service life
  • Optional Filter and Surge Counter – for enhanced protection
  • UL®1449 Ed. 3 Listed
  • ERICO Surge Products are covered by an extended warranty; see the attached document for more information


  • Ideal for exposed locations or for the protection of critical equipment
  • Designed to mount adjacent to the service entrance panel
  • Possible applications include:
    • Computer rooms
    • Medical facilities
    • Telecommunications site

More Information

CRITEC SES200 Series SPD - metal enclosure option CRITEC SES200 Series SPD - without filter or surge counter options
SES200 Metal Enclosure Option SES200 without filter or surge counter options*

Ordering Information

Part No. Description
SES200120/208 120/208V 3 phase Wye 4W+G
SES200120/240 120/240V 1 phase 3W+G
SES200240DHG 120/240V 3 phase Delta 4W+G
SES200240D 220/240V 3 phase Delta 3W+G
SES200277/480 277/480V 3 phase Wye 4W+G
SES200120/208CM 120/208V 3 phase Wye 4W+G
SES200120/240CM 120/240V 2 phase 3W+G
SES200240DCM 220/240V 3 phase Delta 3W+G
SES200277/480CM 277/480V 3 phase Wye 4W+G

UL® 1449 Ed3 Listed Type 1/2

Surge Rated to Meet:
ANSI®/IEEE® C62.41.2 Cat A, Cat B, Cat C
ANSI®/IEEE® C62.41.2 Scenerio II, Exposure 3, 100kA 8/20µs, 10kA 10/350µs
UL® 1449 Ed3 In 20kA mode

*Note: Ensure that installation of this model of the SES200 is not exposed to direct sunlight as solar radiation may cause internal temperatures to exceed the maximum specified and damage will result to the surge protective modules. A sun shield should be fitted if this unit is to be installed outdoors and exposed to sunlight.

ANSI is a registered trademark the American National Standards Institute.  IEEE is a registered trademark the Institute of Electrical and Electronics Engineers, Incorporated.  NEMA is a registered trademark the National Electrical Manufacturers Association.  UL is a registered trademark Underwriters Laboratories, Inc.


SES200 data sheet


Transient Voltage Surge Suppression, SES200 Series, Installation Instructions

Technical Note TN CR 005, The Benefits of TD Technology

Surge 10 Year Warranty