Eaton Electrical IT-RSS Introduction, Scope, 1.2 XT-40 Catalog Numbering System, XT-40- 3Y101

XT-40 & IT-RSS Installation IM01005012E

1INTRODUCTION

1.1Scope

This installation manual contains the information necessary to install Eaton Corporation’s XT-40 and IT-RSS Surge Protective Devices (SPDs). System wiring and voltage information for these devices are provided in Sections 1.2 and 1.3.

If you require further information regarding a particular installation, contact Power Quality Technical Support at 1-800-809-2772.

1.2XT-40 Catalog Numbering System

XT-40- 3Y101

Model / Surge Current

XT / 40 kA

Configuration & Voltage Ranges (Vac)

1P101 = Single-Phase — 100, 110, 120, 127

1P201 = Single-Phase — 200, 208, 220, 230, 240, 277 1P400 = Single-Phase — 380, 400, 415, 440, 480

1S101 = Split-Phase — 100/200, 110/220, 120/240

3Y101 = Three-Phase Wye (Star) — 100/174, 110/190, 120/208, 127/220 3Y201 = Three-Phase Wye (Star) — 220/380, 230/400, 240/415, 277/480 3Y300 = Three-Phase Wye (Star) — 305/525, 347/600

3D101 = Three-Phase High Leg Delta — 120/240 NN201 = Three-Phase Delta — 200, 208, 220, 230, 240 NN400 = Three-Phase Delta — 380, 400, 415, 440, 480 NN501 = Three-Phase Delta — 525, 600

In this example, Catalog Number XT-40-3Y101identifies an XT model with the following features and ratings:

•Surge Current Rating of 40 kA

•Three-Phase WYE Configuration

•Voltage Range of 100 to 220 Vac

1.3IT-RSS System Wiring and Maximum Voltages

Model	System	Phase to	Line to
Number	Wiring	Phase	Ground
IT-RSS	Split Phase	288 Vac	144 Vac

Rev. 1 – 2/2007 Page 1