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 61 - 80 รายการจาก 432 รายการ / Viewing 61 - 80 of 432 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. 900-2125
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MA40UM
Brand :Altech
THB4,758.81
Each
Units
- 3P - 20 kA - - - - - - - - MA
RS Stock No. 706-1841
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2021-4AA10
Brand :Siemens
THB2,769.70
Each
Units
11 → 16 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 212-7961
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PKZM0-25
Brand :Eaton
THB4,527.16
Each
Units
20 → 25 A 3P - 40 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS Stock No. 395-0302
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME04
THB3,673.47
Each
Units
0.4 → 0.63 A 3P TeSys 100 kA Icu @ 230/240 V ac, 100 kA Icu @ 400/415 V ac, 100 kA Icu @ 440 V ac, 100 kA Icu @ 500 V ac, 100 kA Icu @ 690 V ac Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 706-1829
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-1JA10
Brand :Siemens
THB2,556.32
Each
Units
7 → 10 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 400-1439
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME21
THB7,146.76
Each
Units
17 → 23 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. 608-8309
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2L08
THB2,975.69
Each
Units
2.5 → 4 A, 4 → 6 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS Stock No. 900-2119
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MA25UM
Brand :Altech
THB3,905.02
Each
Units
- 3P - 20 kA - - - - - - - - MA
RS Stock No. 900-2112
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MA20UM
Brand :Altech
THB3,662.38
Each
Units
- 3P - 20 kA - - - - - - - - MA
RS Stock No. 711-6477
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MS132-6.3
Brand :ABB
THB2,963.78
Each
Units
- 3P - - - 690 V ac - - - - - - MS132
RS Stock No. 246-5049
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV1041-4MA10
Brand :Siemens
THB10,530.73
Each
Units
80 → 100 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
RS Stock No. 608-8523
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2P21
THB8,869.31
Each
Units
17 → 23 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 706-1813
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-1GA20
Brand :Siemens
THB2,280.84
Each
Units
4.5 → 6.3 A 3P Sirius Innovation 6 kA Cage Clamp 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 243-7145
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV1011-1FA10
Brand :Siemens
THB2,545.36
Each
Units
3.5 → 5 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 395-0324
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME02
THB2,014.31
Each
Units
0.16 → 0.25 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 706-1800
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-1EA10
Brand :Siemens
THB2,280.84
Each
Units
2.8 → 4 A 3P Sirius Innovation 6 kA Screw 690 V - 109mm 45mm 91mm 109 x 45 x 91 mm - 3RV2
RS Stock No. 619-4707
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PKZM4-32
Brand :Eaton
THB6,720.87
Each
Units
25 → 32 A 3P - 60 kA Screw 690 V ac - 140mm 55mm 160mm 140 x 55 x 160 mm - PKZM 4
RS Stock No. 608-8315
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2L10
THB5,386.07
Each
Units
4 → 6 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS Stock No. 706-1866
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2021-4CA10
Brand :Siemens
THB2,894.66
Each
Units
17 → 22 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 331-3668
Brand :RS PRO
THB1,473.54
Each
Units
10 → 16 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
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