Indication Contacts

Introduction

Use indication contacts to view the status of the device remotely.

The indication contact provides either OF, SD, or SDE indication functions, depending on its location in the device.

Indication contacts are located under the front face of the device, in a compartment isolated from the power circuits.

Description

Name	Image	Definition
OF open/close indication contact		The OF contact indicates the position of the main contacts of the device (open or closed).
SD trip indication contact		The SD contact indicates that the device has tripped due to: oOperation of the push-to-trip button oOperation of the AU undervoltage trip release or AS shunt trip oOverload or thermal protection oShort-time protection oInstantaneous protection oPhase-unbalance protection
SDE electrical fault contact		The SDE contact indicates that the device has tripped on an electrical fault due to: oOverload or thermal protection oShort-time protection oInstantaneous protection oPhase-unbalance protection

Name

Image

Definition

OF open/close indication contact

G-SE-0075480.1.gif-high.gif

The OF contact indicates the position of the main contacts of the device (open or closed).

SD trip indication contact

G-SE-0075480.1.gif-high.gif

The SD contact indicates that the device has tripped due to:

oOperation of the push-to-trip button

oOperation of the AU undervoltage trip release or AS shunt trip

oOverload or thermal protection

oShort-time protection

oInstantaneous protection

oPhase-unbalance protection

SDE electrical fault contact

G-SE-0075480.1.gif-high.gif

The SDE contact indicates that the device has tripped on an electrical fault due to:

oOverload or thermal protection

oShort-time protection

oInstantaneous protection

oPhase-unbalance protection

Characteristics

The contacts used for indication contacts are the common point changeover type.

NC Normally Closed contact

NO Normally Open contact

Operation of the Indication Contacts

The following figures show the position of the indication contacts for each position of the handle and main contacts.

Name	Contact number	Position of the handle and contacts
Handle position	–
Device status	–	OFF	ON	Tripped on electrical fault	Tripped (by AU/AS or push-to-trip protection)
Main contact position	–	Open	Closed	Open	Open
OF auxiliary contact position	•1–•2	Closed	Open	Closed	Closed
OF auxiliary contact position	•1–•4	Open	Closed	Open	Open
SD auxiliary contact position	•1–•2	Closed	Closed	Open	Open
SD auxiliary contact position	•1–•4	Open	Open	Closed	Closed
SDE auxiliary contact position	•1–•2	Open	Open	Closed	Open
SDE auxiliary contact position	•1–•4	Closed	Closed	Open	Closed

Wiring Diagram

The diagram is shown with circuits de-energized, all devices open, connected, and charged, and relays in normal position.

Indication contacts	Description
OF4/OF3/OF2/OF1	Device ON/OFF indication contacts
SDE	Electrical fault trip indication contact (short-circuit, overload, phase-unbalance)
SD	Trip indication contact