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 101 - 120 รายการจาก 524 รายการ / Viewing 101 - 120 of 524 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. 608-8444
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2LE22
THB3,709.54
Each
Units
25 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.5mm 89 x 44.5 x 78.5 mm - GV2L
RS Stock No. 413-1596
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME083
THB2,701.01
Each
Units
2.5 → 4 A 3P TeSys - Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 706-1853
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2021-4BA10
Brand :Siemens
THB2,769.70
Each
Units
14 → 20 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 395-0318
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME03
THB3,278.71
Each
Units
0.25 → 0.4 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 706-1780
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-1BA20
Brand :Siemens
THB2,280.84
Each
Units
1.4 → 2 A 3P Sirius Innovation 10 kA Cage Clamp 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 243-7094
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV1011-1AA10
Brand :Siemens
THB2,471.34
Each
Units
1.1 → 1.6 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 124-3096
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-0KA15
Brand :Siemens
THB2,657.98
Each
Units
0.9 → 1.25 A 3 Sirius Innovation 100 kA @ 400 V ac Screw 690 V ac Manual 45mm 96.9mm 97mm 45 x 97 x 96.9 mm Three Phase Motors SRV2
RS Stock No. 755-2930
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2311-1HC10
Brand :Siemens
THB2,272.51
Each
Units
8 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS Stock No. 445-0392
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MS116-10
Brand :ABB
THB2,926.11
Each
Units
6.30 → 10 A 3P - 50 kA Screw 690 V ac - - - - 45 x 90 x 85.6 mm - MS116
RS Stock No. 395-0346
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV2ME01
THB3,332.89
Each
Units
0.1 → 0.16 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 124-3114
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2321-1EC10
Brand :Siemens
THB2,360.86
Each
Units
Maximum of 4 A 3 Sirius Innovation 100 kA @ 400 V ac Screw 690 V ac Manual 45mm 96.9mm 97mm 45 x 97 x 96.9 mm Three Phase Motors SRV2
RS Stock No. 331-3652
Brand :RS PRO
THB1,473.54
Each
Units
6 → 10 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 124-3101
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2021-1DA10
Brand :Siemens
THB2,379.83
Each
Units
2.2 → 3.2 A 3 Sirius Innovation 100 kA @ 400 V ac Screw 690 V ac Manual 45mm 96.9mm 97mm 45 x 97 x 96.9 mm Three Phase Motors SRV2
RS Stock No. 818-182
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.072738 | PKZM0-6,3
Brand :Eaton
THB2,983.93
Each
Units
4 → 6.3 A 3P - 60 kA Screw 690 V - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS Stock No. 124-3099
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-1GA15
Brand :Siemens
THB2,755.03
Each
Units
4.5 → 6.3 A 3 Sirius Innovation 100 kA @ 400 V ac Screw 690 V ac Manual 45mm 96.9mm 97mm 45 x 97 x 96.9 mm Three Phase Motors SRV2
RS Stock No. 755-2911
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2311-1CC10
Brand :Siemens
THB2,272.51
Each
Units
2.5 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS Stock No. 243-7000
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV1011-0CA10
Brand :Siemens
THB2,114.57
Each
Units
0.18 → 0.25 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 445-0308
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MS116-0.25
Brand :ABB
THB2,154.40
Each
Units
0.16 → 0.25 A 3P - 50 kA Screw 690 V ac - - - - 45 x 90 x 85.6 mm - MS116
RS Stock No. 486-3518
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1SAM250000R1012
Brand :ABB
THB4,209.45
Each
Units
8 → 12 A 3P - 25 kA Screw 690 V ac - - - - 45 x 90 x 85.6 mm - ISAM
RS Stock No. 706-1831
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3RV2011-1KA10
Brand :Siemens
THB2,556.32
Each
Units
9 → 12 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
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