Eaton Industrial Switchgear - General Information

2010

CA08103002Z-EN

www.eaton.com

Switchgear for North America 22/13

Classified Components according to

CSA. They have non-adjustable

magnetic short-circuit releases for

short-circuit protection and fixed-

current overload relays for overload

protection. They are approved as

current limiters and marked accord-

ingly on their rating plates. This means

that their rated current can be fully

utilized. They are rated in amperes,

their short-circuit switching capacity

is given in kA and – if they are

equipped with auxiliary contacts –

contain duty type information (pilot

duties). Eaton also provides an

approved DC switching capacity for

single-pole 48 V and two-pole 96 V in

addition to the switches’ AC switching

capacity

These miniature circuit breakers can

be used as branch circuit protective

devices (BCPD) in feeder circuits and

branch circuits. Up to a rated current

of 32 A, FAZ…-NA and FAZ…-RT must

be used only in star networks with

solid grounding and a slash voltage of

up to 480Y/277V. FAZ…-NA and

FAZ…-RT for higher current values

can be used up to 240 V AC, irrespec-

tive of network configuration and

grounding. Part number suffix “-RT”

stands for Ring Terminal. On these

versions the terminal screws can be

fully turned out to allow the connection

of ring cable lugs.

These circuit breakers are available

with one, two or three poles and with

IEC/EN tripping characteristics B, C

and D. The characteristic is selected

according to the protected load type.

Available accessories are auxiliary

contacts, shunt releases and three-

phase commoning links with large

clearances and creepage distances

are available.

Accessories, such as auxiliary

contacts and shunt releases

In North America, approvals were, for

a long time, available only for

complete, unalterable devices. For the

practice common in Europe of

allowing customers to retrofit devices

with auxiliary contacts, undervoltage

releases, shunt releases and other

accessories, the corresponding UL

and CSA approvals can now be issued.

This applies even for changes in the

main current area, for example

different main current terminal types.

The permissible versions must, of

course, have been described, tested

and approved. Permissible alternative

connection blocks must be indicated

on the device’s rating plate. Observe

the installation instructions and do not

omit any parts only because their

purpose is not clear. These parts

ensure the required clearances and

creepage distances, prevent short-

circuits between phases due to faulty

insulation and improve protected

against accidental contact.

The tried-and-tested modular design

method allows the field of application

of contactors, circuit breakers, motor-

protective circuit breakers, position

switches and control circuit devices to

be cost-effectively extended with

add-on functions. It also helps reduce

manufacturers and users reduce their

parts stock and provide optimized

solutions more quickly.

The standardized continuous currents

and switching duties for AC and DC for

auxiliary switches are assigned

according to the standards to the

characteristic values and switching

duty types indicated in the devices’

technical specifications and on their

ratings plates. These pilot duties are

given in the table for auxiliary contacts

in AC and DC circuits on page 5/xx.

Auxiliary contacts are approved

mainly for heavy pilot duty, and on

some devices for standard pilot duty.

For detailed information, see the

technical data for the device groups.

The ratings plate on some auxiliary

switches contains information such as

“600

V, same polarity”. This means that

adjacent auxiliary contacts of the

same auxiliary switch or switch block

must be connected only to the same

control voltage source.

Soft starters and frequency

inverters

Soft starters DS4, DS6, DS7

Like IEC/EN 60947, North American

standards regard soft starters largely

like contactors. These devices are

developed, tested and approved to

UL 508, CSA-C22.2 No. 14-05 and

CSA-C22.2 No. 0-M91. Circuit-breakers

or fuses provide short-circuit protec-

tion. The North American standards do

not currently include protection

through UL 508 Type E starters or the

treatment of these devices as contac-

tors, i.e. as UL 508 Type F starters.

Motor protection must be provided by

an overload relay. For dimensioning

the motor outgoer with soft starter, use

the selection tables in this catalog.

Eaton’s soft starters (DS4, DS6, DS7)

are UL-listed and CSA-certified (DS7

as of Summer 2010) for an operational

voltage of up to 480 V 50/60 Hz (full

voltage). They are used in branch

circuits. In practice, the soft starters

are bypassed with a built-in bypass

after the motor has started up. This

reduces heat losses and thyristor load.

Any short-circuit currents in the motor

outgoer do not flow through the

thyristors in the event of a fault. This

increases the soft starters’ reliability.

On some models the soft starters

switch two phases and the third phase

is fed through. One of of the competi-

tive advantage of Eaton’s soft starters

is that they have terminal types that

are adapted to the switchgear. At

currents up to 41 A the same terminal

types are used as for circuit breakers,

whose accessories can therefore also

be used.

Frequency inverters M-Max

and H-Max

Frequency inverters are developed,

tested and approved according to

North American standards UL 508C

and CSA-C22.2 No.14-05. Short-circuit

protection is provided by circuit

breakers or fuses. It is currently not yet

clear whether UL 508 Type E or Type F

starters can be used as protective

devices. Frequency inverters can be

used only in combination with the

tested, manufacturer-assigned

Part no.

or design in:

Standards

UL, CSA

Fuse

charac-

teristics

SCCR

Typical

values

in A

Fields of application

Notes

USA Canada

Class

Code"

Class

No. 59

Code"

UL 248-6/7,

C22.2 248-6/7

Fast

kA, 250 VAC

0…600

Primarily domestic

Types H, K and No. 59 “Code” fit the same bases

and are therefore interchangeable. There is

therefore a risk that they may be incorrectly

used! See also note on K.

kA, 600 VAC

Class

UL 248-4,

C22.2 248-4

Fast

Time-lag

200

kA,

600

VAC

0.5…30

Fast

Protection

from resistive

and inductive

loads.

Circuits for

heating,

lighting, feed-

ers and

branches for

mixed loads.

Time-lag:

Protection

from inductive

and highly

inductive

loads.

Circuits for

motors,

transformers,

lighting etc.

Extremely compact design.

Current limiter

to UL/CSA.

Class

UL 248-5,

C22.2 248-5

Fast

Time-lag

100

kA,

480

VAC

21…60

Compact design.

Current limiter

to UL/CSA.

All other fuse types do not fit into bases.

100

kA,

600

VAC

0.5…20

Class

HRCI-J

UL 248-8,

C22.2 248-8

Fast

Time-lag

200

kA,

600

VAC

1…600

Compact design.

Current limiter

to UL/CSA.

All other fuse types do not fit into bases.

Class

K1, K5

Class

K1, K5

UL 248-9,

C22.2 248-9

Fast

Time-lag

kA/100 kA/

200

kA,

600

VAC

0…600

Not current limiter

to UL/CSA.

In the USA, the K types are therefore being

increasingly replaced by the RK part numbers.

Class

UL 248-10,

C22.2 248-10

Fast

Time-lag

200

kA,

600

VAC

601…6000

Current limiter

to UL/CSA.

All other fuse types do not fit into bases.

Class

RK1,

RK5

Class

HRCI-R

RK1,

RK5

UL 248-12,

C22.2 248-12

Fast

Time-lag

kA/100 kA/

200

kA,

600

VAC

0…600

Current limiter

to UL/CSA.

Types RK1, RK5 and HRCI-R fit the same bases.

All other fuse types do not fit into these bases.

RK1 fuses have lower let-through values than

RK5.

Class

UL 248-15,

C22.2 248-15

Fast

200

kA,

300

VAC

200

kA,

600

VAC

0…1200

Extremely compact design.

Current limiter

to UL/CSA.

All other fuse types do not fit into bases.

Notes

For additional approved versions for single-pole 125 V DC and two-pole

250

V DC please enquire