Page 8 - SACE Tmax XT - Technical Catalogue

1/4 SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS

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Temperature performance

Circuit-breakers with thermal-magnetic trip units

The circuit-breakers fitted with thermal-magnetic trip units have the thermal element set for a reference
temperature of +40°C. With the same setting, for temperatures other than +40°C there is a variation in
the thermal trip threshold as indicated in the tables below.

XT1
Ambient T 10 20 30 40 45 50 60 70
(°C)
In [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A]
16 13 18 12 18 11.9 17 11.2 16 10.8 15.5 11 15 10 14 9 13
20 16 23 15 22 14.7 21 14 20 13.6 19.4 13 19 12 18 11 16
25 20 29 19 28 18.2 26 17.5 25 16.9 24.2 16 23 15 22 14 20
32 26 37 25 35 23.8 34 22.4 32 21.7 31.0 21 30 20 28 18 26
40 32 46 31 44 29.4 42 28 40 27.1 38.7 27 38 25 35 23 33
50 40 58 39 55 37.1 53 35 50 33.9 48.4 33 47 31 44 28 41
63 51 72 49 69 46.2 66 44.1 63 42.7 61 41 59 39 55 36 51
80 64 92 62 88 58.8 84 56 80 54.2 77 53 75 49 70 46 65
100 81 115 77 110 73.5 105 70 100 67.8 97 66 94 61 88 57 81
125 101 144 96 138 91.7 131 87.5 125 84.7 121 82 117 77 109 71 102
160 129 184 123 176 117.6 168 112 160 108.4 155 105 150 98 140 91 130

XT2 with thermal-magnetic trip units
Ambient T 10 20 30 40 45 50 60 70
(°C)
In [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A] MIN [A] MAX [A]
1.6 1.3 1.8 1.2 1.8 1.2 1.7 1.1 1.6 1.1 1.5 1.1 1.5 1.0 1.4 0.9 1.3
2 1.6 2.3 1.5 2.2 1.5 2.2 1.4 2.0 1.3 1.9 1.3 1.9 1.2 1.7 1.1 1.6
2.5 2.0 2.9 1.9 2.8 1.8 2.6 1.8 2.5 1.7 2.4 1.6 2.3 1.5 2.2 1.4 2.0
3.2 2.5 3.6 2.5 3.5 2.5 3.5 2.0 3.2 2.0 3.0 2.0 2.8 1.8 2.6 1.6 2.3
4 3.2 4.6 3.1 4.4 2.9 4.2 2.8 4.0 2.7 3.9 2.6 3.7 2.5 3.5 2.2 3.2
5 4 5.7 3.9 5.5 3.7 5.3 3.5 5 3.4 4.8 3.3 4.7 3 4.3 2.8 4
6.3 5.0 7.2 4.9 6.9 4.6 6.6 4.4 6.3 4.2 6.1 4.1 5.9 3.9 5.5 3.6 5.1
8 6.4 9.2 6.2 8.8 5.9 8.4 5.6 8.0 5.4 7.7 5.3 7.5 4.9 7.0 4.6 6.5
10 8.1 11.5 7.7 11.0 7.4 10.5 7.0 10.0 6.7 9.6 6.5 9.3 6.1 8.7 5.7 8.1
12.5 10.1 14.4 9.7 13.8 9.2 13.2 8.8 12.5 8.4 12.0 8.2 11.7 7.6 10.9 7.1 10.1
16 13 18.0 12.0 18.0 11.9 17.0 11.2 16.0 10.8 15.4 10.5 15.0 9.8 14.0 9.1 13.0
20 16 23.0 15.4 22.0 14.7 21.0 14.0 20.0 13.5 19.3 13.3 19.0 11.9 17.0 11.2 16.0
25 20 29.0 19.6 28.0 18.2 26.0 17.5 25.0 16.8 24.0 16.1 23.0 15.4 22.0 14.0 20.0
32 26 37.0 24.5 35.0 23.8 34.0 22.4 32.0 21.6 30.8 21.0 30.0 19.6 28.0 18.2 26.0
40 32 46.0 30.8 44.0 29.4 42.0 28.0 40.0 27.0 38.5 25.9 37.0 24.5 35.0 22.4 32.0
50 40 57.0 38.5 55.0 37.1 53.0 35.0 50.0 33.7 48.2 32.9 47.0 30.1 43.0 28.0 40.0
63 50 72.0 48.3 69.0 46.2 66.0 44.1 63.0 42.5 60.7 41.3 59.0 38.5 55.0 35.7 51.0
80 64 92.0 61.6 88.0 58.8 84.0 56.0 80.0 54.0 77.1 52.5 75.0 49.0 70.0 45.5 65.0
100 81 115.0 77.0 110.0 73.5 105.0 70.0 100.0 67.5 96.4 65.1 93.0 60.9 87.0 56.7 81.0
125 101 144.0 96.6 138.0 92.4 132.0 87.5 125.0 84.3 120.5 81.9 117.0 76.3 109.0 70.7 101.0
160 129 184.0 123.0 178.0 117.6 168.0 112.0 160.0 107.9 154.2 105.0 150.0 97.3 139.0 94.5 135.0