Siemens Sensitrip III Sentron Series User Manual

SAFETY INSTRUCTIONS
Siemens Energy & Automation, Inc.
Bellefontaine, Ohio 43311 U.S.A.
Installation Instructions
Hazardous voltage.
Will cause death or severe
injury.
Turn off and lock out all power
supplying this device before
removing cover(s) or device and
while cover(s) are removed.
Replace all covers and shields
before power supplying this device
is turned on.
Item: Solid State Molded Case Circuit Breaker
Sentron Series Sensitrip III
I-T-E JD Frame Types SJD6(-A),
SHJD6(-A), SCJD6(-A). LD Frame Types
SLD6(-A), SHLD6(-A) and SCLD6(-A).
Page 1 of 5
Pc. No. 761411A03
NOTE: This instruction outlines the recommended
installation procedure.
INTRODUCTION
The JD and LD Frame circuit breaker line includes
types SJD6(-A), SHJD6(-A), SCJD6(-A), SLD6(-A),
SHLD6(-A) and SCLD6(-A) circuit breaker types.
These circuit breakers are rated for operating volt-
ages up to 600 VAC, 50/60 Hz.
INSTALLATION
JD and LD Frame circuit breakers are for use in
individual enclosures, panelboards, switchboards or
other approved equipment.
The installation procedure consists of inspecting,
attaching required accessories, mounting the cir-
cuit breaker and connecting and torquing the line
and load wire connectors.
Mounting hardware and unmounted wire connec-
tors (where required) are available as separate cata-
log items.
A. Turn off and lock out all power before installing
or servicing this circuit breaker.
B. Make sure that the device is suitable for the in-
stallation by comparing nameplate ratings with
system requirements. Inspect the circuit breaker
for completeness and check for any damage be-
fore mounting.
C. Device must be in “TRIPPED” or “OFF” position
prior to mounting. See Fig. 4.
Fig. 1
D. To mount the device perform the following steps:
1. For individual enclosures, panelboards and
switchboards manufactured by Siemens En-
ergy & Automation, Inc., follow the instructions
provided with this equipment.
2. For those applications where mounting is on
a flat surface of the customers equipment, drill
and top mounting bolt holes according to the
drilling plan in Fig. 2. For escutcheon cut out
plans refer to Fig. 3.
3. If device contains internal accessories, make
sure terminals can be connected when the cir-
cuit breaker is mounted.

Siemens Sensitrip III Sentron Series Specifications

General

Brand	Siemens
Model	Sensitrip III Sentron Series
Category	Circuit breakers
Language	English

Summary

Installation Instructions

Introduction

Describes the JD and LD Frame circuit breaker line and their operating voltage ratings.

Installation Overview

Outlines the general installation steps for JD and LD Frame circuit breakers.

Installation Safety Precautions

Details critical safety steps like turning off power and checking device suitability.

Mounting Procedures

Describes mounting on Siemens equipment or customer equipment, including drilling plans.

Circuit Breaker Installation Steps

Terminal Shield Removal

Instructions for removing line and load terminal shields before mounting.

Circuit Breaker Mounting

Procedure for positioning the circuit breaker and securing mounting hardware.

Terminal Connections and Checks

Connecting accessory terminals and checking mounting hardware and wire connector torque.

Circuit Breaker Operation and Electronics

Manual Operation

Explains how the circuit breaker handle and PUSH-TO-TRIP button control operation.

Circuit Breaker Reset

Procedure for resetting the circuit breaker after it has tripped.

PUSH-TO-TRIP Button Function

Details the function of the PUSH-TO-TRIP button for testing.

Electronic Trip Unit Settings

Guidance on setting electronic trip unit dials and potential issues with improper settings.

Continuous Current and Long Time Delay

Adjustment for continuous current setting (Ir) and long time delay options.

Circuit Breaker Adjustments and Features

Instantaneous Pickup Adjustment

How to adjust the instantaneous pickup setting based on continuous current.

Short Time Pickup and Delay

Optional adjustment for short time pickup and delay settings.

Ground Fault Pickup and Delay

Optional adjustment for ground fault protection pickup and time delays.

Advanced Settings, Testing, and Maintenance

Residual and Ground Return Settings

Explanation of RESIDUAL and GROUND RETURN settings for trip units.

Neutral Sensing Transformer Requirements

Information on external transformers needed for specific ground fault protection modes.

Electronic Functionality Testing

Details on testing electronic functionality using a TS-31 test set.

Circuit Breaker Maintenance

Recommendations for maintenance, noting they are designed for maintenance-free service.