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02

Model

NXR-12  NXR-25  NXR-38  NXR-100

Matching contactor

NXC-06M,

09M,12M

NXC-06,
09,12,16

NXC-18,22

NXC-25,

32,38

NXC-25,

32,38

NXC-40,

50,65

NXC-75,

85,100

Matching mounting base

Rated insulation voltage Ui

Rated operating voltage Ue

Rated impulse withstand voltage Uimp

MB-1

MB-2

MB-3

MB-4

690V

660/690V

6kV

5A

380/400 V  1.5A

220V  0.2A

1NO  1NC

6A

Auxiliary circuit

Ith

AC-15

DC-13

Auxiliary contact type

Specification of 

matching fuse A

Table 3 Combination with fuse

Model

NXR-12

NXR-25

Setting current 

range A

Specification of matching fuse

gG (Recommend RT16) A

Sectional area of 

connecting wire mm²

0.1~0.16

0.16~0.25

0.25~0.4

0.4~0.63

0.63~1

1~1.6

1.25~2

1.6~2.5

2.5~4

4~6

2

2

2

2

4

4

6

6

10

16

1

Table 2 (continued)

Summary of Contents for NXR-100

Page 1: ...NO 2020 04 Standard IEC EN 60947 4 1 NXR 12 100 Thermal Overload Relay User Instruction ...

Page 2: ...llation in any damp condensed phase environment with inflammable and explosive gas is forbidden When the product is being installed or maintained the power must be switched off You are prohibited from touching the conductive part when the product is operating 1 2 3 4 Safety Warning ...

Page 3: ...ure 35 70 average temperature should not exceed 35 within 24h Relative humidity should not exceed 50 at 40 up to 90 at 20 Pollution class installation category Altitude No influence below 2000m Class 3 Ⅲ Main Technical Parameters 2 Table 1 Environmental conditions and technical parameter of main circuit Table 2 Technical parameters Model Phase failure protection Manual and automatic reset Temperat...

Page 4: ...oltage Uimp MB 1 MB 2 MB 3 MB 4 690V 660 690V 6kV 5A 380 400 V 1 5A 220V 0 2A 1NO 1NC 6A Auxiliary circuit Ith AC 15 DC 13 Auxiliary contact type Specification of matching fuse A Table 3 Combination with fuse Model NXR 12 NXR 25 Setting current range A Specification of matching fuse gG Recommend RT16 A Sectional area of connecting wire mm 0 1 0 16 0 16 0 25 0 25 0 4 0 4 0 63 0 63 1 1 1 6 1 25 2 1 ...

Page 5: ...nd RT16 A Sectional area of connecting wire mm 5 5 8 7 10 9 12 9 13 12 18 17 25 23 32 30 38 23 32 30 40 37 50 48 65 55 70 63 80 80 93 80 100 20 20 25 25 35 50 63 80 63 100 100 100 125 125 160 160 1 1 5 2 5 2 5 2 5 4 6 10 6 10 10 16 25 25 35 35 NXR 12 NXR 25 NXR 38 NXR 100 Table 3 continued ...

Page 6: ...on time current characteristic curve 0 8 1 1 2 1 5 2 3 4 5 6 7 8 9 10 120 100 80 60 40 20 10 8 6 4 2 1 40 20 10 8 6 4 2 1 min s heat state 3 phase 2 phase cold state 2 phase 3 phase Amplification factor of setting current ...

Page 7: ...lation 3 2 Installation Figure 2 Thermal relay outline Figure 3 Combination of thermal relay and mounting base B A A 9 1 1 13 STOP TEST NXR 25 RESET NO NC 98 97 96 95 2 T1 4 T2 6 T3 2 T1 4 T2 6 T3 C E H D G F 35 ...

Page 8: ...le 4 Overall dimensions Model NXR 12 NXR 25 NXR 38 NXR 100 45 45 55 72 73 67 82 87 68 94 94 117 45 45 55 72 96 93 6 102 9 126 5 75 3 102 102 126 34 35 41 61 5 85 1 55 75 1 109 Figure 4 Assembly of thermal relay and contactor Unit mm ...

Page 9: ... range Automatic reset Manual reset M3 5 1 2 N m M4 1 7 N m M10 10 N m 2 S mm NXR 100 NXR 38 NXR 25 NXR 12 4 35 4 10 1 6 1 4 4 35 A 4mm L 12mm A 4mm L 10mm A 3 5mm L 9mm 4 10 4 10 4 10 1 6 1 6 1 6 1 6 1 6 1 4 1 4 1 4 1 4 1 4 M3 5 0 8 N m 2 mm 2 mm 2 mm 2 mm 2 mm 2 mm NXR 12 100 1 2 5 A 3 5mm L 8mm Main circuit Auxiliary circuit 1 2 5 1 2 5 1 2 5 1 2 5 1 2 5 Table 5 Wiring parameters ...

Page 10: ...perating current of the motor Stong shock or vibration Frequent start of motor The sectional area of connecting wire is too small or there is loose connection The size is too big The set current value is bigger than the actual operating current of the motor The sectional area of connecting wire is too big Thermal relay does not work The product is not reset Auxiliary contacts are not powered on Ma...

Page 11: ...ay IEC EN 60947 4 1 Check 21 09 Environmental Protection 5 In order to protect the environment the product or product parts should be disposed of according to the industrial waste treatment process or be sent to the recycling station for assortment dismantling and recycling according to local regulations ...

Page 12: ...rmal Overload Relay User Instruction Zhejiang Chint Electrics Co Ltd Add No 1 CHINT Road CHINT Industrial Zone North Baixiang Yueqing Zhejiang 325603 P R China E mail global sales chint com Website http en chint com ...

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