64 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cnSection 5: Dimensional drawingsIZM97 fixed type external vertical board dimensions (3P and 4P, 2500~3200A)Door cut outDoor cut outDoor panel mounting holeDoor panelmounting holeMax. distance toisolation surface

Eaton IZM97 Instruction Manual

Section 1: Introduction

Safe practices

Qualified personnel

and installation

Table 2. Basic Circuit Breaker Weights

Adapting cassette

Figure 7. REMOVE Position

Figure 8. DISCONNECT Position

Fixed circuit breaker

Circuit breaker operation

and operation

Figure 15. Typical Fixed Circuit Breaker Features (Front and Rear Views)

Figure 16. Typical IZM63 and IZM99 Standard Frame Fixed Circuit Breaker Features (Front and Rear Views)

Figure 17. Typical IZM Drawout Circuit Breaker Front Cover

Basic circuit breaker assembly

Operating mechanism

Arc chambers

Electronic tripping system

Figure 28. Pictorial Diagram of Typical Current Sensing, Processing, and Tripping System

Figure 29. Digitrip RMS 1150 Programmable Trip Unit Installed in IZM Circuit Breaker

Secondary contacts and connection diagrams

Figure 33. Top View Secondary Connectors

Figure 38. Connection Diagram for IZM97 and IZM32 Frame with Digitrip 1150 (Type P Trip Unit)

Figure 41. Connection Diagram for IZM99 and IZM63 Frame with Digitrip 1150 with ABCABC Configuration (Type P Trip Unit)

Figure 42. Connection Diagram for IZM99 and IZM63 Frame with Digitrip 1150 with AABBCC Configuration (Type P Trip Unit)

Accessory devices

Figure 46. Spring Release with Optional Latch Switch

Figure 48. Shunt Trip, Spring Release, and Undervoltage Release Installed

Figure 52. Motor Operator Installed in IZM93 an IZM20 Frame Circuit Breaker

Figure 55. ON-OFF Pushbutton Lockable Cover Plate

Figure 60. Door Escutcheon and Gasket

and cassette

Figure 64. Drawout Cassette Features (Front and Rear Views)

Section 5: Fixed circuit breaker

Section 6: Inspection and maintenance

Figure 66. IZM Nameplate Information

Figure 68. Bottom View of Arc Chute

Circuit breaker modifications and changes

Figure 73. Current Sensor Cover in Place Over Sensors

Section 7: Troubleshooting

Section 8: Renewal parts

IZM low voltage air circuit breakers﻿ Effective October

IZM97

IZM99