DOCA0185EN-01

Indication Contacts

Introduction

The indication contacts provides remote information about the circuit breaker status. The position of the indication contact inside the case, determines its function. When an indication contact is present, a green flag is displayed on the front of the circuit breaker. The indication contacts provide the following information remotely:

Position of indication contact

Information provided

OF slot

Open/close circuit breaker status

SD slot

Trip indication

For more information about installation, consult the instruction sheet on the Schneider Electric website: EAV91204 OF/SD Indication Contacts - Instruction Sheet

Indication Contacts Installation Demonstration Video

To access a demonstration video about the installation of indication contacts in a ComPacT NSXm circuit breaker, click the following link: https://youtu.be/2agHMEtGFhk, copy and paste the link to your Web browser, or scan the QR code.

Characteristics

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

C(1) Common

NC(2) Normally closed contact. The NC contact is normally closed when the circuit breaker is in the O (OFF) position.

NO(4) Normally open contact. The NO contact is normally open when the circuit breaker is in the O (OFF) position.

Name

Definition

OF open / close indication contact

The OF contact indicates the state of the circuit breaker, (I (ON) or O (OFF)/Trip).

Changeover

  • O (OFF) to I (ON)

  • I (ON) to O (OFF)

  • I (ON) to Trip

SD trip indication contact

The SD contact indicates that the circuit breaker has tripped due to:

  • Operation of the push-to-trip button

  • Operation of the MX shunt trip or MN undervoltage release

  • Electrical fault detected by the protection

Changeover

  • I (ON) to Trip

  • Trip to O (OFF)

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

Was this helpful?