Square D Digest 179

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Thermal Units

Thermal Unit Selection Thermal Unit Selection Tables

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

Thermal Unit Table 17 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Number

1.T.U.

2T.U.

3T.U.

1.T.U.

2T.U.

3T.U.

16.2–17.5 17.6–18.8 18.9–20.5 20.6–22.2 22.3–23.7 23.8–25.4 25.5–27.3 27.4–29.3 29.4–31.5 31.6–33.9 34.0–36.2 36.3–39.3 39.4–42.3 42.4–45.3 45.4–48.3 48.4–52.0 52.1–54.9 55.0–59.7 59.8–65.4 65.5–69.6 69.7–74.8 74.9–79.7 79.8–83.1 83.2–86.0 —

15.1–16.2 16.3–17.3 17.4–19.5 19.6–20.7 20.8–22.3 22.4–24.0 24.1–25.7 25.8–27.5 27.6–29.6 29.7–31.7 31.8–33.9 34.0–36.6 36.7–39.3 39.4–42.3 42.4–44.9 45.0–48.3 48.4–50.9 51.0–55.5 55.6–59.9 60.0–64.2 64.3–68.7 68.8–71.4 71.5–74.8 74.9–78.0 78.1–80.7 80.8–86.0 — —

14.3–15.4 15.5–16.4 16.5–18.5 18.6–19.6 19.7–21.1 21.2–22.7 22.8–24.4 24.5–26.1 26.2–28.1 28.2–30.0 30.1–32.1 32.2–34.7 34.8–37.3 37.4–40.1 40.2–42.6 42.7–45.8 45.9–48.3 48.4–52.6 52.7–56.8 56.9–60.9 61.0–65.1 65.2–67.7 67.8–70.9 71.0–73.9 74.0–76.5 76.6–80.2 80.3–83.1 83.2–86.0

— CC 22.8 CC 24.6 CC 26.3 CC 28.8 CC 31.0 CC 33.3 CC 36.4 CC 39.6 CC 42.7 CC 46.6 CC 50.1 CC 54.5 CC 59.4 CC 64.3 CC 68.5 CC 74.6 CC 81.5 CC 87.7 CC 94.0 — CC 112.0 CC 121.0 CC 132.0 CC 143.0 CC 156.0 CC 167.0 CC 180.0

0.42–0.46 0.47–0.50 0.51–0.55 0.56–0.62 0.63–0.67 0.68–0.73 0.74–0.81 0.82–0.89 0.90–0.98 0.99–1.12 1.13–1.20 1.21–1.34 1.35–1.41 1.42–1.51 1.52–1.62 1.63–1.73 1.74–1.86 1.87–2.02 2.03–2.25 2.26–2.46 2.47–2.77 2.78–2.99 3.00–3.26 3.27–3.59 3.60–3.99 4.00–4.42 4.43–4.61 4.62–5.23 5.24–5.39 5.40–5.88 5.89–6.56 6.57–7.18 7.19–7.80 7.81–9.00

0.39–0.43 0.44–0.47 0.48–0.52 0.53–0.58 0.59–0.64 0.65–0.68 0.69–0.77 0.78–0.84 0.85–0.93 0.94–1.05 1.06–1.13 1.14–1.25 1.26–1.33 1.34–1.42 1.43–1.52 1.53–1.63 1.64–1.75 1.76–1.90 1.91–2.13 2.14–2.33 2.34–2.73 2.74–2.86 2.87–3.14 3.15–3.47 3.48–3.83 3.84–4.16 4.17–4.43 4.44–5.00 5.01–5.16 5.17–5.56 5.57–6.22 6.23–6.89 6.90–7.00 —

0.38–0.40 0.41–0.44 0.45–0.49 0.50–0.55 0.56–0.60 0.61–0.65 0.66–0.72 0.73–0.79 0.80–0.88 0.89–0.98 0.99–1.07 1.08–1.17 1.18–1.25 1.26–1.33 1.34–1.44 1.45–1.53 1.54–1.65 1.66–1.79 1.80–1.99 2.00–2.18 2.19–2.45 2.46–2.65 2.66–2.90 2.91–3.19 3.20–3.56 3.57–3.83 3.84–4.08 4.09–4.64 4.65–5.00 5.01–5.36 5.37–5.87 5.88–6.43 6.44–6.79 6.80–7.00

A .49 A .54 A .59 A .65 A .71 A .78 A .86 A .95 A 1.02 A 1.16 A 1.25 A 1.39 A 1.54 A 1.63 A 1.75 A 1.86 A 1.99 A 2.15 A 2.31 A 2.57 A 2.81 A 3.61 A 3.95 A 4.32 A 4.79 A 5.30 A 5.78 A 6.20 A 6.99 A 7.65 A 8.38 A 9.25 A 9.85 A 11.0

16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS

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Thermal Unit Table 19 (index and instructions: page 16-134 to page 16-138) Motor FLC (A) Thermal Unit Number

Thermal Unit Table 18 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Number

43.6–47.3 47.4–51.3 51.4–54.6 54.7–59.7 59.8–65.1 65.2–70.1 70.2–75.1 75.2–82.2 82.3–89.2 89.3–96.5 96.6–104. 105.–113. 114.–123. 124.–133.

CC54.5 CC59.4 CC64.3 CC68.5 CC74.6 CC81.5 CC87.7 CC94.0 — CC112.0 CC121.0 CC132.0 CC143.0 CC156.0

1.T.U.

2T.U.

3T.U.

15.5–16.4 16.5–17.6 17.7–19.1 19.2–20.4 20.5–22.1 22.2–23.4 23.5–25.6 25.7–27.3 27.4–29.4 29.5–31.5 31.6–33.7 33.8–36.5 36.6–39.1 39.2–41.7 41.8–44.8 44.9–48.0 48.1–50.7 50.8–54.9 55.0–59.9 60.0–63.3 63.4–67.2 67.3–72.4 72.5–74.9 75.0–77.4 77.5–80.7 80.8–83.1 83.2–86.0

14.4–15.3 15.4–16.4 16.5–18.4 18.5–19.6 19.7–21.0 21.1–22.7 22.8–24.2 24.3–25.9 26.0–27.8 27.9–29.8 29.9–31.7 31.8–34.2 34.3–36.9 37.0–39.8 39.9–42.3 42.4–45.3 45.4–47.9 48.0–51.9 52.0–56.5 56.6–60.7 60.8–64.8 64.9–67.1 67.2–70.1 70.2–72.9 73.0–74.9 75.0–77.9 78.0–80.9 81.0–82.9 83.0–86.0

13.6–14.5 14.6–15.5 15.6–17.4 17.5–18.5 18.6–19.9 20.0–21.5 21.6–22.9 23.0–24.5 24.6–26.3 26.4–28.2 28.3–30.0 30.1–32.3 32.4–34.9 35.0–37.6 37.7–40.0 40.1–42.8 42.9–45.3 45.4–49.1 49.2–53.4 53.5–57.4 57.5–61.3 61.4–63.5 63.6–66.3 66.4–69.0 69.1–70.9 71.0–73.7 73.8–76.5 76.6–78.4 78.5–86.0

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Thermal Unit Table 21 (index and instructions: page 16-134 to page 16-138) Motor FLC (A) Thermal Unit Load

Thermal Unit Table 20 (index and instructions: page 16-134 to page 16-138) Motor FLC (A)

Thermal Unit Number

128.–140. 141.–163. 164.–179. 180.–201. 202.–227. 228.–251. 252.–278. 279.–308. 309.–346. 347.–380. 381.–426. 427.–454. 455.–489. 490.–520.

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

133.–148. 149.–174. 175.–195. 196.–219. 220.–239. 240.–271. 272.–308. 309.–348. 349.–397. 398.–429. 430.–495. 496.–520.

B1.30 B1.45 B1.67 B1.88 B2.10 B2.40 B2.65 B3.00 B3.30 B3.70 B4.15 B4.85

16-142

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