Square D Digest 179

Thermal Units

Thermal Unit Selection Thermal Unit Selection Tables

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Thermal Unit Table 78 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Table 79 (index and instructions: page 16-134 to page 16-138) Motor FLC (A) Thermal Unit Number

Thermal Unit Number

2T. U. or 3T. U. 2.26–2.51 2.52–2.82 2.83–3.09 3.10–3.30 3.31–3.69 3.70–4.27 4.28–4.72 4.73–5.25 5.26–5.53 5.54–5.81 5.82–6.14 6.15–6.44 6.45–6.81 6.82–7.19 7.20–7.59 7.60–7.99 8.00–8.17 8.18–8.74 8.75–9.31 9.32–9.94 9.95–10.5 10.6–11.1 11.2–12.0 — 12.0–12.4 12.5–13.1 13.2–14.3 14.4–15.3 15.4–15.9 16.0–16.9 17.0–18.3 18.4–19.5 19.6–20.5 20.6–21.1 21.2–22.6 22.7–23.7 23.8–24.3 24.4–26.0 — — — — —

1T.U.

3.31–3.67 3.68–4.23 4.24–4.69 4.70–5.21 5.22–5.49 5.50–5.74 5.75–6.07 6.08–6.35 6.36–6.71 6.72–7.03 7.04–7.53 7.54–7.91 7.92–8.53 8.54–9.14 9.15–9.71 9.72–10.2 10.3–10.8 10.9–11.5 11.6–12.3 12.4–13.0 13.1–13.9 14.0–15.1 15.2–16.1 16.2–16.9 17.0–17.9 18.0–19.4 19.5–20.7 20.8–21.7 21.8–22.3 22.4–23.9 24.0–25.1 25.2–25.9 26.0–27.1 27.2–28.6 28.7–30.1 30.2–31.7 31.8–33.3 33.4–34.5 34.6–36.5 36.6–38.5 38.6–39.9 40.0–45.0

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2.26–2.51 2.52–2.82 2.83–3.09 3.10–3.30 3.31–3.69 3.70–4.27 4.28–4.72 4.73–5.25 5.26–5.53 5.54–5.81 5.82–6.14 6.15–6.44 6.45–6.81 6.82–7.19 7.20–7.59 7.60–7.99 8.00–8.17 8.18–8.74 8.75–9.31 9.32–9.94 9.95–10.5 10.6–11.1 11.2–11.9 12.0–12.4 12.5–13.1 13.2–14.3 14.4–15.3 15.4–15.9 16.0–18.0 14.4–15.3 15.4–15.9 16.0–16.9 17.0–18.3 18.4–19.5 19.6–20.5 20.6–21.1 21.2–22.6 22.7–23.7 23.8–24.3 24.4–26.0 — — —

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16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS

Following Selections for Size 1 Only.

Thermal Unit Table 81 (index and instructions: page 16-134 to page 16-138) Motor FLC (A) Thermal Unit Number

Thermal Unit Table 80 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Number

52.2–55.6 55.7–58.8 58.9–62.5 62.6–66.0 66.1–70.1 70.2–78.6 78.7–92.0 92.1–102 103–114 115–123 124–133

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20.5–21.7 21.8–23.1 23.2–24.8 24.9–26.5 26.6–28.4 28.5–30.4 30.5–32.8 32.9–34.9 35.0–37.3 37.4–39.8 39.9–42.5 42.6–45.8 45.9–48.2 48.3–50.6 50.7–53.1 53.2–56.5 56.6–59.4 59.5–63.4 63.5–71.0 71.1–78.8 78.9–86.0

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— FB105.0

16-150

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