80459-641-01E Model 6 Motor Control Centers
10/2012 Section 12—Insulation Resistance
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Melting Alloy Overload Selection Tables for Part Winding Combination Starter Units
Size 1 Size 2
Motor
Full-Load
Current (A)
Thermal Unit
Number
Motor
Full-Load
Current (A)
Thermal Unit
Number
Motor
Full-Load
Current (A)
Thermal Unit
Number
Motor
Full-Load
Current (A)
Thermal Unit
Number
1.12–1.27 B 0.81 8.24–9.41 B 6.90 7.88–8.91 B 6.90 24.8–27.9 B 22
1.28–1.37 B 0.92 9.42–10.43 B 7.70 8.92–9.95 B 7.70 28.0–31.7 B 25
1.38–1.55 B 1.30 10.44–11.07 B 8.20 9.96–10.57 B 8.20 31.8–35.9 B 28
1.56–1.71 B 1.16 11.08–12.35 B 9.10 10.58–11.95 B 9.10 36.0–39.9 B 32
1.72–1.95 B 1.30 12.36–14.05 B 10.2 11.96–13.79 B 10.2 40.0–45.7 B 36
1.96–2.19 B 1.45 14.06–15.85 B 11.5 13.80–15.85 B 11.5 45.8–50.9 B 40
2.20–2.43 B 1.67 15.86–17.23 B 12.8 15.86–17.43 B 12.8 51.0–61.7 B 45
2.44–2.67 B 1.88 17.24–18.35 B 14 17.44–18.55 B 14.0 61.8–65.1 B 50
2.68–3.07 B 2.10 18.36–20.1 B 15.5 18.56–20.5 B 15.5 65.2–69.9 B 56
3.08–3.47 B 2.40 20.2–22.1 B 17.5 20.6–22.9 B 17.5 70.0–79.5 B 62
3.48–3.79 B 2.65 22.2–23.7 B 19.5 23.0–24.7 B 19.5 79.6–89.4 B 70
3.80–4.35 B 3.00 23.8–27.1 B 22
4.36–5.07 B 3.30 27.2–30.7 B 25
5.08–5.75 B 3.70 30.8–34.9 B 28
5.76–6.45 B 4.15 35.0–38.9 B 32
6.46–6.99 B 4.85 39.0–44.5 B 36
7.00–7.71 B 5.50 44.6–50.3 B 40
7.72–8.23 B 6.25 50.4–54.0 B 45
Size 3 Size 4
Motor
Full-Load
Current (A)
Thermal Unit
Number
Motor
Full-Load
Current (A)
Thermal Unit
Number
Motor
Full-Load
Current (A)
Thermal Unit
Number
Motor
Full-Load
Current (A)
Thermal Unit
Number
28.0–29.9 CC 20.9 73.8–79.7 CC 59.4 105–112 CC 74.6 170–181 CC 132
30.0–32.5 CC 22.8 79.8–84.7 CC 64.3 113–122 CC 81.5 182–195 CC 143
32.6–34.5 CC 24.6 84.8–91.5 CC 68.5 123–131 CC 87.7 196–209 CC 156
34.6–37.5 CC 26.3 91.6–98.5 CC 74.6 132–142 CC 94.0 210–227 CC 167
37.6–40.5 CC 28.8 98.6–105.7 CC 81.5 143–153 CC 103 228–247 CC 180
40.6–43.5 CC 31.0 105.8–113.7 CC 87.7 154–157 CC 112 248–266 CC 196
43.6–46.7 CC 33.3 113.8–122.5 CC 94.0 158–169 CC 121
46.8–50.5 CC 36.4 122.6–132.3 CC 103
50.6–54.3 CC 39.6 132.4–142.5 CC 112
54.4–58.9 CC 42.7 142.6–153.5 CC 121
59.0–63.3 CC 46.6 153.6–165.9 CC 132
63.4–68.1 CC 50.1 166.0–180.0 CC 143
68.2–73.7 CC 54.5