HP Type K02 Manuale d'uso - Pagina 14
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Combination Starters (NEMA Sizes 0–4)
Combination Starter With Type MCS
Disconnect Switch
Dimensions
CSI Section 16160
Combination Starter With ETI
Circuit Breaker
The Type ETI circuit breaker, sometimes
called a Motor Circuit Interrupter, is
a device designed specifically for applica-
tion in motor circuits. The ETI is a
magnetic only protective device designed
to provide protection against short
circuit current.
The instantaneous-only type ETI circuit
breaker employs adjustable magnetic
trip settings to allow broader application
ranges and a higher degree of motor
short circuit protection.
Table 15.25 3-Phase Magnetic
Motor Starter
NEMA
Maximum Horsepower
Starter
Half
Size
Size
200V
230V
0
0
3
3
1
1
7.5
7.5
3
*
3
1
⁄
1
⁄
10
10
4
4
2
2
10
15
1
*
1
2
⁄
2
⁄
15
20
2
2
3
3
25
30
1
*
1
3
⁄
3
⁄
30
40
2
2
4
4
40
50
Siemens Electrical Products and Systems
Specification Guide
General / Dimensions
Type MCS Disconnect Switches
Type MCS Disconnect Switches feature
a quick-make, quick-break mechanism to
insure proper switch operation. With a
high fault withstand rating of 100 kA at
480 volts ac, when fused with Class R
rated size fuses, MCS switches meet
stringent industry standards set forth by
the automotive, petro-chemical, and pulp
and paper industries.
With visible blade contacts for ease of
inspection, removable line shields, and
front removable fuse clips and lugs,
disconnect switches are UL recognized
and CSA certified. They are available with
Class H, J, and R fuse kits for a wide
range of fused, non-fused, and over-
fusing options.
Table 15.26
Magnetic Motor Starter
Dimensions in Inches (mm)
Size
460/575V
NEMA 1
0 –1
5
General
10
Purpose
1
2, 2
Standard
15
Width 0–4
25
3
30
NEMA 1
50
General
75
Purpose
1
3
⁄
2
Standard
100
Width 3
1
⁄
–4
2
NEMA 12
0 –2
Industrial
Use
Standard
3
Width 0 –4
NEMA 12
Industrial
1
Use
3
⁄
, 4
2
Standard
Width 3
1
⁄
– 4
2
A
B
C
3
23.25
11.00
7.63
⁄
4
(591)
(279)
(194)
26.75
12.13
7.63
⁄
2
(679)
(308)
(194)
31.50
12.50
7.63
(800)
(318)
(194)
48.97
12.13
9.94
, 4
(1244)
(308)
(252)
1
⁄
29.50
12.13
7.69
2
(749)
(308)
(195)
34.25
12.50
7.69
(870)
(318)
(195)
48.94
19.13
9.94
(1243)
(486)
(252)
15
297