Moulded Case Chassis System Selection Guide

NMC & PowerpactMoulded Case Chassis System Selection Guide

A comprehensive system for quality and peace of mind.

Page 2

The Guiding System, the new way to create your

electrical installations

A comprehensive offer of products with consistent design

The Guiding System is first and foremost a Merlin Gerin product

offer covering all electrical distribution needs. However, what

makes all the difference is that these products have been designed

to operate together: mechanical and electrical compatibility,

interoperability, modularity and communication.

Thus the electrical installation is both optimised and more efficient:

better continuity of supply, enhanced safety for people and

equipment, guaranteed upgradeability, effective monitoring and control.

Tools to simplify design and implementation

With the Guiding System, you have a comprehensive range of tools

- the Guiding Tools - that will help you increase your product

knowledge and product utilisation. Of course this is in compliance

with current standards and procedures.

These tools are regularly updated and include technical booklets and

guides, design aid software, training courses, etc.

The Guiding System, combined

with the know how and creativity,

allows optimised, reliable, open-ended

and standard compliant installations

For a genuine partnership with you

Because each electrical installation is unique, there is no standard

solution. With the Guiding System, the variety of combinations

allows for genuine customisation solutions. You can create and

implement electrical installations to meet your creative

requirements and design knowledge.

You and Merlin Gerin’s Guiding System form a genuine partnership.

For more details on the Guiding System,

consult www.merlin-gerin.com

Page 3

NMC Chassis1250A/1600A/2000A

Functions and Characteristics

FunctionMerlin Gerin’s NMC chassis can be used to build flexible and adaptable main and secondary switchboards up to 2000A, for industrial and commercial sites.

The NMC chassis is specifically designed to accommodate Merlin Gerin devices, through its large choice of incomers (Switch Disconnectors, Moulded Case Circuit Breakers-MCCBs), and outgoing MCCBs (Compact NS range).

Technical Data• 3 Phase • from 14 to 44 modules• current rating up to 2000A• short circuit withstand: 63kA rms for 1s• optional IP2X protection

DescriptionThe NMC chassis range is adapted to a large variety of requirements.

Customised versions:You can create and implement an electrical distribution system to meet your specific requirements and design.

Choice of circuit breakers: Suitable for Compact NS Moulded Case Circuit Breakers, 1P, 2P and 3P up to 1250A.

Current rating:Available in three current ratings: 1250A, 1600A and 2000A.

Modular design:Available in 14, 18, 22, 28, 33 and 44 modules. Each module measures 35mm. The total number of modules determines the height of the chassis. The configuration of the chassis can be altered by easily removing or adding tee-offs.Number of modules required for each type of MCCB: NS100 to NS250: 3 modulesNS400 and NS630: 4 modulesNS630b to NS1250: 6 modules

Flexible chassis:The NMC chassis can be designed in top, bottom, dual or center feed. It also comes in a single-sided or double-sided layout.

Insulated system:The busbars are fully enclosed and have colour coded tee-offs for connection to the MCCBs.

Type Tested:Manufactured and tested in accordance with:TCA100267 - Withstand current: 63kA rms for 1s - Peak Withstand current: 139kA peakTCA100639 - 11.2kV impulse testTCA100382 - Degree of protection: IP2XInterruption tests:– NS250H at 63kA – test report No. 7015.B– NS630H at 63kA – test report No. 7015.BFor the interruption test, the NMC chassis was fitted inside an enclosure with escutcheon fitted. Test CB was mounted between two adjacent CB’s, and three CB’s were mounted opposite. All CB’s were line side fed. No terminal shields were fitted. When IP2X chassis brackets are used, we recommend you use a terminal shield and rear insulating screen on load side of CB. The tests were in accordance with clause 8.2.3 of Australian Standard AS3439.1.

Protection: Finger safe IP2X protection can be achieved by the addition of the following components (report TCA No.100382):• IP2X circuit breaker bracket and insulating screen• Short terminal shields on line side and long terminal shields on load side.

Order procedure:To order a NMC chassis, fill out the layout sheet on page 7 and fax it to Schneider Electric Customer Service Center or hand it in to a Schneider Electric Sales Engineer.

Page 4

NMC ChassisAccessories andSpecial Applications

AccessoriesNMC spreader links:

Spreaders reduce the pitch of the chassis connection terminals. Thus making

it possible to connect the NMC chassis directly to a NS630b to NS1600 circuit

breakers, INS630b to INS2500, or IN2500.

NMC rating Incoming

devices

Spreader

reference

QTY

required

1250 NS630b/1600

INS630b/1600

NMC12/16LINKS 2

1600 NS630b/1600

INS630b/1600

NMC12/16LINKS 3

2000 IN2500 NMC25INLINKS 1

INS2500 NMC25INSLINKS 1

IP2X brackets and terminal shields:

The NMC chassis can be assembled to comply with the requirements of AS/NZS

3439.1:2002 (Clause 8.2.7). The chassis must be equipped with IP2X support brackets

with insulating screens and the MCCBs must be equipped with terminal shields.

NS100/250 NS400/630 NS630b/1250

IP2X Chassis Brackets

NMC006 NMC043(SS)NMC008(DS)

NMC050

Insulating Screen (Supplied) (Supplied) (Supplied)

Terminal Line 29321 32562 33628

Shields Load 29323 32564 33628

SS = Single sidedDS = Double sided

Back shield:

The NMC Chassis can also be shielded from the back by using base cover

insulators. For more detail consult Schneider Electric.

Special ApplicationsNMC Chassis rated at 1000V

The 1000V rated NS400N can only be used on the single sided NMC chassis,

providing 1 module space is present between each 1000V circuit breaker.

TCA Report 100639 - 11.2kV impulse test.

Page 5

NMC ChassisDimensions, Volumes

Number of Modules Length(mm)

14 595

18 735

22 875

28 1085

33 1260

44 1645

SINGLE SIDED CHASSIS

DOUBLE SIDED CHASSIS

NS100 NS250

NS630

NS1250

NS100

NS100

NS250

NS250

NS630

NS400

NS1250

Page 6

NMC ChassisCross Section

DOUBLE SIDEDSINGLE SIDED

* Add 6.3mm for 2000 A versions (ie. 11 + 6.3 = 17.3 mm)

*

*

*

*

*

*

Page 7

NMC ChassisLayout Sheet

Notes:

1. Add the total quantity of modules to calculate the total size of the chassis.

2. For single-sided chassis, ensure that the load side (customer cable connection) of

ALL circuit breakers is clearly marked on the layout diagram.

3. If a NS630b/1250 is mounted at the top or bottom of the chassis, an extra

module is required at the extremity of the chassis for mounting the internal

busbars insulators.

4. 1 module is also required between 2 x NS630b/1250 mounted side by side.

5. 1000V MCCB’s can only be used on single sided chassis. 1 module space is

required between each 1000V breaker and IP2X support brackets must be used.

6. For NS630b/1250 on double sided chassis, identify if the load side of the breaker

is on the left or the right.

7. Include 33130NMC (modified 3p rear terminal shield) in BOM for all NS630b/1250

to be mounted on the NMC chassis.

S/O Number:

Customer:

Line:

Chassis Part number:

Date Ordered:

Date Requested:

14 595

18 735

22 875

28 1085

33 1260

44 1645

No. of

Modules

Dimensions

mm

Quantity:

Chassis Type

Standard IP2X 1000V (see note 5)

Number of Modules Required

Breaker Type Space

Required

Part No. No. of

Breakers per

tee-off

Qty

Required

NS100/160/250NHL 3 Modules NM250 2

NM250SS 1

NS400/630NHL 4 Modules NM630 2

NM630SS 1

NS630b/1250 NH (7) 6 Modules NM1250SS 1

Customer approved:

Date:

NMC12 1250A Double sided

NMC16 1600A Single sided

NMC20 2000A

CB outgoing cable connection (load) on

Top Feed Left

Bottom Feed Right

Centre Feed

Dual Feed

Number of Modules

14 28

18 33

22 44

(see note 6)

Page 8

Function

CNS-Powerpact chassis assemblies provide easy mounting of moulded case circuit

breakers into low voltage power distribution switchboards. The unique, innovative

design offers the benefit of a space saving assembly with a lower installation cost.

CNS-Powerpact chassis is ideal for industrial and commercial applications either as

a main or a sub-distribution panel.

Technical Data

• available with 630A or 800A 3pole busbars

• from 12 to 72 ways for double sided and 6 to 39 ways for single sided

• short circuit withstand: 40kA rms for 1s, 50kA rms for 0.1s

Description

The CNS-Powerpact chassis range is adapted to a large variety of requirements.

Choice of circuit breakers:

Suitable for Compact NS Moulded Case Circuit Breakers, 1P, 2P, 3P and 4P up to 250A.

Flexible chassis:

The CNS-Powerpact chassis can be designed in top, bottom, or dual feed. It also

comes in a single-sided or double-sided layout.

Customised versions:

You can create custom layouts to meet your specific requirements and design.

Current rating:

Available with 630A or 800A 3 pole busbars.

Insulated System:

The busbars and tee-offs are fully insulated and colour-coded.

Incoming devices:

The 630A CNS-Powerpact chassis can be connected directly to an Interpact

INS400 to INS630 switch disconnector or a Compact NS400 and NS630 MCCBs.

Type Tested:

Manufactured and tested in accordance with:

Withstand capacity:

- 40ka/1 sec cert. no. 64167

- 50kA/0.1 sec cert. no. 64297

Interruption tests:

- NS250H at 63kA - test report NO. 67049.1.B

For the interuption test, the Powerpact chassis was fitted inside an enclosure with

escutcheon fitted. The test CB was mounted between two adjacent CB’s, and three

CB’s were mounted opposite. All CB’s were line side fed. No terminal shields, phase

barriers or rear insulating screens were fitted.

The test was in accordance with clause 8.2.3 of the Australian Standard AS3439.1.

Accessories

CNS interconnection kit:

This kit is required to maintain the same escutcheon level for the incoming and

outgoing devices.

Incoming devices Part number

CNS interconnection kit INS400 to INS630 &

NS400 –NS630

CNS63CK

Catalogue number:

For standard chassis use the following guide to determine the CNS chassis part

number. For any custom design you can fill out the layout on page 11, then fax it

to Schneider Electric Customer service Center or hand it in to a Schneider Electric

Sales Engineer.

CNS-Powerpact Chassis630A/800A

Functions and Characteristics

Layout - PowerpactThe length of the chassis is determined by total

number of ways required.

* Only for single sided chassis. Omit for double sided.

Chassis Part Number

Rating

(A)

630

800

Name

CNS (630A)

NS (800A)

630 24 SS LH TF

No. of Ways

12

18

24

30

36

42

48

60

72

CNS

SS*: Single sided chassis

LH*: MCCBs mounted left

RH*: MCCBs mounted right

TF: Top Feed

BF: Bottom Feed

DFC: Dual Feed

Page 9

CNS-Powerpact Chassis 630ADimensions, Volumes

DURAVIN

Page 10

NS-Powerpact Chassis 800ADimensions, Volumes

DURAVIN

CHASSISPART NUMBER

NS80012

NS80018

NS80024

NS80030

NS80036

NS80042

NS80048

NS80060

NS80072

Page 11

CNS630 & NS800 Custom Powerpact

Layout Sheet

Each segment represents one pole of the circuit breaker.

On 4 pole breakers, the neutral pole is on the left hand side of the breaker. Make

sure a spare space is available on the chassis if 4P breakers are to be connected

to the chassis.

All breakers can be reverse fed.

S/O Number:

Customer:

Line:

Part number:

Date Ordered:

Date Requested:

6 12

12 24

18 36

24 44

30 60

36 72

Sin

gle

sid

ed

Nu

mb

er

of

po

les (

35

mm

ea

ch

)

Quantity:

For single sided (SS) chassis, the circuit breakers are to be

mounted on the:

Left hand side Right hand side

Customer approved:

Date:

Do

ub

le s

ide

d

Wh

ite

ph

ase

Blu

e p

ha

se

Ne

utr

al S

PA

CE

Re

d p

ha

se

Supply

2 Phase

3 Phase

3 Phase + neutral space

Type

Top feed

Bottom feed

Dual feed (Top and Bottom)

Configuration

Single sided

Double sided

Rating

630A - CNS630

800A - NS800

For more details on the Guiding System, www.merlin-gerin.com

Pap

ier Paper

Recyclable

As standards, specifications and designs change from time to time, please ask for

confirmation of the information given in this publication.

This document has been printed on ecological paper.

Design: Schneider Electric

Photos: Schneider Electric

Printed:

Schneider Electric Industries SAS

2 Solent Circuit, Norwest Business Park,

Baulkham Hills NSW 2153

Tel: (02) 9851 2800

Fax: (02) 9629 8555

Australia Wide

Tel: 1300 369 233

Fax: 1300 369 288

Email: h e l p @ a u . s c h n e i d e r - e l e c t r i c . c o m

www.schneider-electr ic.com.au