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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Description 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. 395-0318
Mfr. Part No.GV2ME03
PHP8,990.10
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. 395-0295
Mfr. Part No.GV2ME05
PHP10,119.38
Each
units
0.63 → 1 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS Stock No. 246-5011
Mfr. Part No.3RV1041-4JA10
BrandSiemens
PHP13,581.17
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. 711-6483
Mfr. Part No.MS132-12
BrandABB
PHP5,947.69
Each
units
8 12 A 3P - 100 kA Screw 690 V ac - - - - 45 x 97.8 x 86.6 mm - MS132
RS Stock No. 711-6461
Mfr. Part No.MS132-1.6
BrandABB
PHP5,037.99
Each
units
- 3P - - - 690 V ac - - - - - - MS132
RS Stock No. 608-8292
Mfr. Part No.GV2L07
PHP5,644.23
Each
units
1.6 → 2.5 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS Stock No. 619-4729
Mfr. Part No.PKZM4-40
BrandEaton
PHP12,882.90
Each
units
32 → 40 A 3P - 60 kA Screw 690 V ac - 140mm 55mm 160mm 140 x 55 x 160 mm - PKZM 4
RS Stock No. 445-0409
Mfr. Part No.MS116-16
BrandABB
PHP4,876.90
Each
units
10 → 16 A 3P - 50 kA Screw 690 V ac - - - - 45 x 90 x 85.6 mm - MS116
RS Stock No. 243-7151
Mfr. Part No.3RV1011-1GA10
BrandSiemens
PHP4,326.73
Each
units
4.5 → 6.3 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 243-7117
Mfr. Part No.3RV1011-1CA10
BrandSiemens
PHP4,326.73
Each
units
1.8 → 2.5 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 246-5049
Mfr. Part No.3RV1041-4MA10
BrandSiemens
PHP17,900.66
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. 818-182
Mfr. Part No.PKZM0-6,3
BrandEaton
PHP5,072.23
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. 706-1774
Mfr. Part No.3RV2011-1AA10
BrandSiemens
PHP3,641.14
Each
units
1.1 → 1.6 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 608-8337
Mfr. Part No.GV2L16
PHP5,914.23
Each
units
12 → 18 A, 9 → 13 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS Stock No. 706-1800
Mfr. Part No.3RV2011-1EA10
BrandSiemens
PHP3,801.45
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. 608-8545
Mfr. Part No.GV2P32
PHP16,762.68
Each
units
24 → 32 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS Stock No. 706-1807
Mfr. Part No.3RV2011-1FA10
BrandSiemens
PHP3,801.45
Each
units
3.5 → 5 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS Stock No. 608-8444
Mfr. Part No.GV2LE22
PHP6,305.66
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. 445-0386
Mfr. Part No.MS116-6.3
BrandABB
PHP4,399.87
Each
units
4 6.30 A 3P - 50 kA Screw 690 V ac - - - - 45 x 90 x 85.6 mm - MS116
RS Stock No. 608-8309
Mfr. Part No.GV2L08
PHP5,737.74
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
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