Cutler-Hammer Heater Coil Posted on February 26, 2017 by Brandy McNeil Magnetic Motor Control Heater coils are rated to protect 40½°C rise motors, and open and drip-proof motors having a service factor of 1.15 where the motor and the controller are at the same ambient temperature. For other conditions: For 50½°C, 55½°C, 75½°C rise motors and enclosed motors having a service factor of 1.0, select one size smaller coil. Ambient temperature of controller lower than motor by 26½°C (47½°F) use one size smaller coil. Ambient temperature of controller higher than motor by 26½°C (47½°F) use one size larger coil. Ultimate tripping current of heater coils is approximately 1.25 times the minimum current rating listed in the tables. Manual Motor Control Heater coils are rated to protect standard 40°C rise motors, and open and drip proof motors having a service factor of 1.15 at approximately 125% of rated motor current, and where controller and motor are at same ambient. Heater coil ranges provide for variations in all enclosure sizes and designs, including internal heating. Selection tables are not compromises or averaged values thereby providing maximum motor output and life. For other conditions: 50½°C or 55½°C rise motor and enclosed motor having a service factor of 1.0 with protection at 115% of rated current, use one size smaller coil. Ambient temperature of controller lower than motor by: 8.5-16.7½°C (16-30½°F) use one size larger coil. 16.8-27.8½°C(31-50½°F) use two sizes smaller coil. Ambient temperature of controller higher than motor by: 8.5-16.7½°C (16-30½°F) use one size larger coil. 16.8-27.8½°C (31-50½°F) use two sizes larger coil. Desc Type 00-1½ 2 3 4 5 A10 Open Encl ST-1 ST-2 ST-3 ST-4 ST-5 ST-6 ST-7 ST-8 ST-16 ST-16 A30 Encl ST-9 ST-3 ST-6 ST-8 ST-16 A40 Encl ST-9 ST-3 ST-6 ST-8 ST-16 A50 Open Encl ST-1 ST-2 ST-3 ST-4 ST-5 ST-6 ST-7 ST-8 ST-16 B10 both ST-1 ST-3 ST-5 ST-7 B50 both ST-1 ST-3 ST-5 ST-7 C300 both ST-1 ST-3 ST-5 ST-7 Desc NEMA Open 1 MS Series all See table B100 Series all See table Cutler-Hammer A10 Heater Selection Chart For OPEN Type Cat. No. A10, A50, B10, B50, C300. For ENCLOSED Type Cat. No. B10, B50, C300 For ENCLOSED Type Cat. No. A10, A50 For OPEN Type Cat. No. A10, A50, C300. For ENCLOSED type Cat. No. B10, C300, A800 For ENCLOSED Type Cat. No. A10, A30, A50 For OPEN Type Cat. No. A10, A50, C300. For ENCLOSED type Cat. No. B10 For ENCLOSED Type Cat. No. A10, A30, A50 For OPEN Type Cat. No. A10, A50, C300 For ENCLOSED Type Cat. No. A10, A50 Catalog Number Table ST-1 Table ST-2 Table ST-3 Table ST-4 Table ST-5 Table ST-6 Table ST-7 Table ST-8 Starter Size – Full Load Amps Sizes 00, 0, 1, 1 ½ Size 2 Size 3 Size 4 H1101 H1102 H1103 H1104 H1105 .167-.187 .188-.210 .211-.237 .238-.266 .267-.298 .155-.173 .174-.195 .196-.220 .221-.247 .248-.278 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – H1106 H1107 H1108 H1109 H1110 .299-.334 .335-.376 .377-.422 .423-.474 .475-.532 .279-.310 .311-.349 .350-.391 .392-.441 .442-.495 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – H1111 H1112 H1113 H1114 H1115 .533-.598 .599-.672 .673-.757 .758-.855 .856-.959 .496-.555 .556-.624 .625-.703 .704-.795 .796-.895 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – H1116 H1117 .960-1.07 1.08-1.21 .896-.999 1.00-1.12 – – – – – – – – – – – – H1018 H1019 H1020 H1021 H1022 1.22-1.35 1.36-1.52 1.53-1.70 1.71-1.90 1.91-2.10 1.13-1.25 1.26-1.41 1.42-1.58 1.59-1.77 1.78-1.96 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – H1023 H1024 H1025 H1026 H1066 H1027 2.11-2.33 2.34-2.62 2.63-2.93 2.94-3.27 3.28-3.64 3.65-4.06 1.97-2.17 2.18-2.44 2.45-2.72 2.73-3.04 3.05-3.38 3.39-3.73 – – – – – 3.72-4.10 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – H1028 H1029 H1030 H1031 H1032 4.07-4.55 4.56-5.03 5.04-5.59 5.60-6.25 6.26-6.92 3.74-4.18 4.19-4.63 4.64-5.15 5.16-5.68 5.69-6.30 4.11-4.59 4.60-5.07 5.08-5.65 5.66-6.29 6.30-7.00 3.86-4.31 4.32-4.77 4.78-5.31 5.32-5.90 5.91-6.55 – – – – – – – – – – – – – – – – – – – – H1033 H1034 H1035 H1036 H1037 6.93-7.75 7.76-8.63 8.64-9.59 9.60-10.6 10.7-11.9 6.31-7.05 7.06-7.76 7.77-8.63 8.64-9.51 9.52-10.5 7.01-7.82 7.83-8.79 8.80-9.67 9.68-10.8 10.9-12.0 6.56-7.33 7.34-8.15 8.16-9.00 9.01-10.1 10.2-11.2 – 8.32-9.27 9.28-10.1 10.2-11.4 11.5-12.8 – 8.24-9.19 9.20-10.1 10.2-11.3 11.4-12.7 – – – – – – – – – – H1038 H1039 H1040 H1041 H1042 12.0-13.3 13.4-14.7 14.8-16.6 16.7-18.8 18.9-21.2 10.6-11.8 11.9-13.1 13.2-14.8 14.9-16.7 16.8-18.9 12.1-13.4 13.5-14.9 15.0-17.6 17.7-19.0 19.1-21.5 11.3-12.5 12.6-13.9 14.0-15.7 15.8-17.5 17.6-19.8 12.9-14.3 14.4-16.0 16.1-17.8 17.9-20.3 20.4-22.9 12.8-14.1 14.2-15.8 15.9-17.7 17.8-20.1 20.2-22.7 – – – – 20.6-23.3 – – – – 20.6-23.3 H1043 H1044 H1045 H1046 H1047 21.3-23.9 24.0-27.0 – – – 19.0-21.3 21.4-24.1 24.2-27.0 – – 21.6-24.5 24.6-27.9 28.0-32.0 32.1-36.6 36.7-41.8 19.9-22.3 22.4-25.4 25.5-28.7 28.8-32.5 32.6-36.6 23.0-26.0 26.1-29.5 29.6-33.5 33.6-37.8 37.9-42.8 22.8-25.5 25.6-28.9 29.0-32.5 32.6-36.7 36.8-41.0 23.4-26.3 26.4-30.8 30.9-34.0 34.1-38.3 38.4-43.4 23.4-26.0 26.1-30.5 30.6-33.6 33.7-37.9 38.0-42.9 H1048 H1049 H1050 H1051 H1052 – – – – – – – – – – 41.9-45.0 – – – – 36.7-41.0 41.1-45.0 – – – 42.9-48.5 48.6-55.1 55.2-62.3 62.4-69.5 69.6-79.1 41.1-46.0 46.1-51.8 51.9-58.6 58.7-64.6 64.7-72.7 43.5-49.3 49.4-55.8 55.9-63.1 63.2-70.4 70.5-79.9 43.0-48.2 48.3-54.6 54.7-61.2 61.3-67.6 67.7-75.9 H1054 H1055 H1056 H1057 H1058 – – – – – – – – – – – – – – – – – – – – 79.2-90.0 – – – – 72.8-83.1 93.2-90.0 – – – 80.0-91.7 91.8-105 106-121 122-135 – 76.0-87.1 87.2-97.5 97.6-109 110-122 123-135 Heaters for A200 or B100 Manual Starters Motor Full-Load Current Catalog Number 1.40 – 1.54 FH19 1.55 – 1.71 FH20 1.72 – 1.89 FH21 1.90 – 2.10 FH22 2.11 – 2.32 FH23 2.33 – 2.54 FH24 2.55 – 2.79 FH25 2.80 – 3.07 FH26 3.08 – 3.36 FH27 3.37 – 3.68 FH28 3.69 – 4.03 FH29 4.04 – 4.40 FH30 4.41 – 4.81 FH31 4.82 – 5.26 FH32 5.27 – 5.74 FH33 5.75 – 6.26 FH34 6.27 – 6.83 FH35 6.84 – 7.45 FH36 7.46 – 8.11 FH37 8.12 – 8.81 FH38 8.82 – 9.58 FH39 9.59 – 10.40 FH40 10.41 – 11.30 FH41 11.40 – 12.20 FH42 12.30 – 13.50 FH43 13.60 – 14.90 FH44 15.00 – 16.00 FH45 16.10 – 17.10 FH46 17.20 – 18.30 FH47 18.40 – 19.70 FH48 19.80 – 21.20 FH49 21.30 – 22.80 FH50 22.90 – 24.50 FH51 24.60 – 26.40 FH52 26.50 – 28.50 FH53 28.60 – 30.80 FH54 30.90 – 33.30 FH55 33.40 – 36.00 FH56 36.10 – 38.90 FH57 11.90 – 13.00 FH68 13.10 – 14.30 FH69 16.00 – 17.40 FH71 17.50 – 19.10 FH72 19.20 – 21.10 FH73 21.20 – 23.20 FH74 23.30 – 25.60 FH75 25.70 – 28.10 FH76 28.20 – 30.80 FH77 30.90 – 34.50 FH78 34.60 – 38.20 FH79 38.30 – 42.60 FH80 42.70 – 46.00 FH81 47.00 – 51.00 FH82