Square D Digest 179

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Thermal Units

Thermal Unit Selection Thermal Unit Selection Tables

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Thermal Unit Table 59 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Table 61 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Number

1or 2T. U. 0.34–0.38 0.39–0.43 0.44–0.47 0.48–0.53 0.54–0.60 0.61–0.68 0.69–0.76 0.77–0.86 0.87–0.97 0.98–1.07 1.08–1.23 1.24–1.39 1.40–1.55 1.56–1.77 1.78–1.96 1.97–2.15 2.16–2.41 2.42–2.71 2.72–3.03 3.04–3.53 3.54–4.01 4.02–4.56 4.57–5.03 5.04–5.59 5.60–5.95 5.96–6.58 6.59–7.31 7.32–8.15 8.16–9.13 9.14–9.91 9.92–10.7 10.8–12.1 12.2–13.5 13.6–15.1 15.2–17.0 17.1–18.9 19.0–21.5 21.6–24.0 24.1–26.0 —

3T. U.

2T. U.

3T. U.

0.29–0.31 0.32–0.35 0.36–0.38 0.39–0.46 0.47–0.55 0.56–0.62 0.63–0.67 0.68–0.75 0.76–0.84 0.85–0.95 0.96–1.09 1.10–1.21 1.22–1.35 1.36–1.53 1.54–1.73 1.74–1.90 1.91–2.14 2.15–2.34 2.35–2.67 2.68–3.22 3.23–3.48 3.49–3.87 3.88–4.14 4.15–4.73 4.74–5.28 5.29–5.64 5.65–6.39 6.40–7.43 7.44–8.55 8.56–9.40 9.41–10.0 10.1–11.2 11.3–12.5 12.6–13.5 13.6–15.4 15.5–17.5 17.6–19.9 20.0–22.2 22.3–25.5 25.6–26.0

B0.44 B0.51 B0.57 B0.63 B0.71 B0.81 B0.92 B1.03 B1.16 B1.30 B1.45 B1.67 B1.88 B2.10 B2.40 B2.65 B3.00 B3.30 B3.70 B4.15 B4.85 B5.50 B6.25 B6.90 B7.70 B8.20 B9.10 B10.2 B11.5 B12.8 B14.0 B15.5 B17.5 B19.5 B22.0 B25.0 B28.0 B32.0 B36.0 B40.0

46.8–50.0 50.1–54.2 54.3–58.3 58.4–63.6 63.7–68.5 68.6–74.0 74.1–79.8 79.9–83.0 83.1–88.9 89.0–95.6 95.7–102. 103.–109. 110.–119. 120.–133. —

45.3–48.2 48.3–52.4 52.5–56.4 56.5–61.2 61.3–66.1 66.2–71.4 71.5–77.0 77.1–79.0 79.1–84.7 84.8–91.1 91.2–98.1 98.2–104. 105.–113. 114.–123. 124.–133.

CC64.3 CC68.5 CC74.6 CC81.5 CC87.7 CC94.0 — CC112.0 CC121.0 CC132.0 CC143.0 CC156.0 CC167.0 CC180.0 CC196.0

16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS

Thermal Unit Table 66 (index and instructions: page 16-134 to page 16-138) Motor FLC (A) Thermal Unit Number

Thermal Unit Table 65 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Number

0.31–0.32 0.33–0.36 0.37–0.41 0.42–0.49 0.50–0.54 0.55–0.61 0.62–0.67 0.68–0.76 0.77–0.87 0.88–0.98 0.99–1.05 1.06–1.25 1.26–1.33 1.34–1.56 1.57–1.71 1.72–1.97 1.98–2.15 2.16–2.42 2.43–2.78 2.79–3.28 3.29–3.88 3.89–4.13 4.14–4.43 4.44–4.96 4.97–5.35 5.36–5.91 5.92–6.79 6.80–7.56 7.57–7.83 7.84–8.09 8.10–9.51 9.52–10.1 10.2–11.3 11.4–13.1 13.2–14.9 15.0–16.1 16.2–17.8 17.9–19.1 19.2–22.4 22.5–23.5 23.6–26.0

0.31–0.35 0.36–0.39 0.40–0.44 0.45–0.50 0.51–0.58 0.59–0.65 0.66–0.73 0.74–0.82 0.83–0.92 0.93–1.03 1.04–1.19 1.20–1.34 1.35–1.50 1.51–1.67 1.68–1.89 1.90–2.14 2.15–2.36 2.37–2.65 2.66–2.97 2.98–3.47 3.48–3.94 3.95–4.44 4.45–4.94 4.95–5.52 5.53–5.88 5.89–6.52 6.53–7.31 7.32–8.21 8.22–9.18 9.19–9.90 10.0–11.0 11.1–12.4 12.5–13.9 14.0–15.7 15.8–17.8 17.9–20.0 20.1–22.9 23.0–25.0 23.0–25.7 25.8–28.6 28.7–32.2 32.3–35.8 35.9–40.1 40.2–44.4 44.5–50.0

Following Selections for Size 2 Only.

16-146

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