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EATON CORPORATION Cutler-Hammer
Chiller Starter (AMPGARD) Technical Data TD02003003E
Copyright 2006
19
LBS Switch
TABLE 7. LBS SWITCH RATINGS
1200 ampere rating is for NEMA 1 enclosure with vented covers. NEMA 3/12 rating (without vents) is 1000 amperes.
Starter Fuse Information
TABLE 8. FUSE COORDINATION RECOMMENDATIONS
Specific motor acceleration time and locked rotor current must be reviewed
to ensure fuse 24R fuse has sufficient capacity for start cycle.
DESCRIPTION
CONTINUOUS
AND BREAK
CURRENT AMPERES
FAULT CLOSE
(UNFUSED) KA
SHORT-TIME
(2 SECONDS)
CURRENT KA
FUSED
INTERRUPTING RATING
(KA SYMMETRICAL)
Switch with Internal Fuses
(450E Maximum at 5 kV, 350E Maximum at 7.2 kV)
600
40
25
50
Switch with 600E and 750E Fuses
(5 kV Maximum)
1200
61
38
40
Switch with 1100E and 1350E Fuses
(5 kV Maximum)
1200
61
38
31.5
Unfused (7.2 kV Maximum)
1200
61
38
N/A
MINIMUM FLA
MAXIMUM FLA
FUSE RATING
CT RATIO
400 Ampere Contactor
10.0
23.0
31.2
42.0
22.9
31.1
41.9
46.7
70-2R
70-2R
100-3R
100-3R
25:5
50:5
50:5
75:5
46.8
63.0
74.8
83.0
62.9
74.7
82.9
93.5
130-4R
150-5R
170-6R
170-6R
75:5
100:5
100:5
150:5
93.6
124.0
137.1
166.0
123.9
137.0
165.9
187.0
200-9R
200-9R
230-12R
230-12R
150:5
200:5
200:5
300:5
187.1
247.0
329.0
360.1
246.9
328.9
360.0
400.0
390-18R
450-24R
450-24R
450-24R
300:5
400:5
600:5
600:5
800 Ampere Contactor
200.0
250.1
330.1
500.0
650.1
250.0
330.0
499.0
650.1
720.0
450-24R
450-24R
650-36R
800-44R
800-44R
300:5
400:5
600:5
800:5
1000:5