Siemens TL.. Manual de instrucciones descargar pdf (Pagina 5)

General Information

Frame Sizes and Frame Ampere Ratings

SB breakers come in four frame sizes with MAX ratings

ranging from 400A to 5000A. All frames are rated for 100%

continuous operation.

Frame Size and Rating Combinations

Rating Plugs

SB breakers use interchangeable rating plugs. The rating plug

ampere values (I

) allows the effective ampere rating of the

breaker to be customized for speciﬁc applications. A label on

the front of the breaker identiﬁes the rating plugs that may be

used with that particular breaker.

Available Rating Plugs

Interruption and Short Time Ratings

Three short circuit interruption ratings are available for speciﬁc

applications. The interruption ratings and short-time ratings are

given in the following table.

UL 489 Interruption and Short Time Ratings

IEC 947-2 Ratings (SBS Units Only)

The interruption rating of the SB breaker is speciﬁed on the

front cover label and is further identiﬁed by a color bar at the

top left of the breaker label.

Blue

indicates the alternate or the lowest interrupting cate-

gory (1200–2000A frames). Black indicates the standard inter-

rupting rating. Red indicates the highest available interrupting

rating for the SB breaker.

Overcurrent Protection Conﬁgurations

Siemens Electronic Trip Units for SB breakers are available in

seven overcurrent protection conﬁgurations to meet speciﬁc

protection requirements. Six trip units come equipped with

Adjustable Continuous Current and Long Time Delay func-

tions. Optional protection conﬁgurations are:

Protection Conﬁguration Identiﬁer

Long Time/Short Time LS

Long Time/Instantaneous LI

Long Time/Short Time/Instantaneous LSI

Long Time/Short Time/Ground Fault LSG

Long Time/Instantaneous/Ground Fault LIG

Long/Short Time/Instantaneous/Ground Fault LSIG

Fixed Long Time/Instantaneous MLI

The trip unit that may be used with a speciﬁc circuit breaker is

identiﬁed on the front cover label.

RMS Current Sensing

The trip unit executes the breaker’s overcurrent fault protec-

tion functions. Its adjustment ﬂexibility allows you to accom-

modate load changes and other protection requirements while

still assuring optimum coordination.

A standard trip unit feature is RMS current sensing. RMS

sensing measures the true heating potential of the current

waveform. It allows for more accurate overcurrent protection

and eliminates nuisance tripping due to harmonic distortion of

the current waveform.

Breaker Frame Ampere Size Breaker MAX Ampere Rating

1200 Amperes

(SBA, SBS only)

400, 800, 1200

2000 Amperes 800 (SBH only), 1200, 1600, 2000

3200 Amperes 2500, 3200

5000 Amperes 2500, 3200, 4000, 5000

MAX Rating

Rating Plug Ampere Values (I

)

400 200, 225, 250, 300, 350, 400

800 400, 450, 500, 600, 700, 800

1200 600, 700, 800, 1000, 1200

1600 800, 1000, 1200, 1600

2000 1000, 1200, 1600, 2000

2500 1600, 2000, 2500

3200 1600, 2000, 2500, 3000, 3200

4000 2000, 2500, 3000, 3200, 4000

5000 2500, 3000, 3200, 4000, 5000

Breaker Frame Size

1200 2000 3200 5000

Type SBA Alternative Interrupt Rating (Blue Label)

240 V AC

480 V AC

600 V AC

65 kA

42 kA

85 kA

65 kA

50kA

——

Type SBS Standard Interrupt Rating (Black Label)

240 V AC

480 V AC

600 V AC

100 kA

50 kA

100 kA

65 kA

150 kA

100 kA

85 kA

150 kA

100 kA

85 kA

Type SBH High Interrupt Rating (Red Label)

240 V AC

480 V AC

600 V AC

—

200 kA

150 kA

100 kA

200 kA

150 kA

100 kA

200 kA

150 kA

100 kA

Short Time Rating (t=0.5 seconds)

25 kA 35 kA 50 kA 65 kA

Voltage 50/60 Hz

Frame Sizes

1200 2000 3200 5000

Type SBS Standard Interrupt Rating (Black Label)

415 V AC lcu

lcs

lcw

100 kA

25 kA

100 kA

35 kA

100 kA

50 kA

100 kA

65 kA

690 V AC lcu

lcs

lcw

65 kA

25 kA

65 kA

35 kA

65 kA

50 kA

65 kA

1 2 3 4 5 6 7 8 9 10 ... 65 66

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Siemens TL.. Manual de instrucciones Pagina 5

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