Motor Protection Circuit Breakers

Motor protection circuit breakers act as protection devices for electric motors, monitoring the electrical supply in motor circuits of 50-60Hz. They protect against phase unbalances and losses, which are detrimental to motors, offer protection against current overload, and prevent short circuits.


What are motor protection circuit breakers used for?

Motor protection circuit breakers are useful in industrial and building applications such as chillers, compressors, heat pumps and cooling towers, to prevent damages from short circuits or power surges. In the manufacturing industry, circuit breakers interrupt electrical faults below the breaking capacity, which protects machinery and equipment from blowouts.


Types of motor protection circuit breakers

Motor protection circuit breakers come in A type or B type classifications, dependent on utilisation and function.


The A type breaker is not explicitly intended for selectivity and does not allow intentional short time delay under short circuit conditions.This means that the system interrupts immediately when current or voltage levels match the breaking capacity.


Type B breakers allow for an intentional and adjustable short time delay under short circuit conditions, which enables the system to continue for a short while with currents exceeding breaking capacity levels.


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กำลังดูสินค้า 21 - 40 รายการจาก 441 รายการ / Viewing 21 - 40 of 441 products
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รายละเอียดสินค้า / Description ราคา / Price Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
RS Stock No. 121-6854
Brand :RS PRO
THB1,003.17
Each
Units
9 → 14 A 3 - 25 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS Stock No. 121-6853
Brand :RS PRO
THB1,003.17
Each
Units
6.3 → 10 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS Stock No. 331-3624
Brand :RS PRO
THB1,165.29
Each
Units
1.6 → 2.4 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6844
Brand :RS PRO
THB876.88
Each
Units
0.1 → 0.16 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS Stock No. 331-3674
Brand :RS PRO
THB1,502.96
Each
Units
16 → 20 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6851
Brand :RS PRO
THB876.88
Each
Units
2.5 → 4 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS Stock No. 331-3680
Brand :RS PRO
THB1,763.61
Each
Units
20 → 25 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6855
Brand :RS PRO
THB1,089.16
Each
Units
13 → 18 A 3 - 25 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS Stock No. 395-0245
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME10
THB3,173.79
Each
Units
4 → 6.3 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 305-2183
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P08
THB4,749.33
Each
Units
2.5 → 4 A 3P TeSys 8 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 305-2206
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P14
THB4,399.42
Each
Units
6 → 10 A 3P TeSys 6 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 246-5011
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV1041-4JA10
Brand :Siemens
THB8,479.26
Each
Units
45 → 63 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
RS Stock No. 305-2177
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P07
THB3,256.36
Each
Units
1.6 → 2.5 A 3P TeSys 8 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 305-2212
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P16
THB6,026.73
Each
Units
9 → 14 A 3P TeSys 6 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 395-0217
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME20
THB3,284.83
Each
Units
13 → 18 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 305-2228
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P20
THB4,708.22
Each
Units
13 → 18 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 395-0251
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME08
THB2,989.55
Each
Units
2.5 → 4 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 608-8539
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P22
THB7,233.16
Each
Units
20 → 25 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 755-2905
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2021-4PA10
Brand :Siemens
THB4,754.97
Each
Units
36 A 3P Sirius Innovation 20 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS Stock No. 608-8545
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P32
THB6,828.32
Each
Units
24 → 32 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
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