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. 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. 243-7072
Mfr. Part No.3RV1011-0JA10
BrandSiemens
PHP3,883.94
Each
units
0.7 → 1 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 608-8387
Mfr. Part No.GV2LE07
PHP4,124.40
Each
units
2.5 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. 706-1841
Mfr. Part No.3RV2021-4AA10
BrandSiemens
PHP4,616.21
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. 395-0346
Mfr. Part No.GV2ME01
PHP8,838.38
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. 711-6474
Mfr. Part No.MS132-16
BrandABB
PHP6,170.36
Each
units
- 3P - - - 690 V ac - - - - - - MS132
RS Stock No. 608-8523
Mfr. Part No.GV2P21
PHP9,766.57
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. 243-7066
Mfr. Part No.3RV1011-0HA10
BrandSiemens
PHP3,883.94
Each
units
0.55 → 0.8 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 123-6689
Mfr. Part No.9000-41034-0100600
PHP8,928.15
Each
units
1 A, 2 A, 4 A, 6 A 4 MICO Intelligent - Cage Clamp 24 V dc - 70mm 80mm 90mm 70 x 80 x 90 mm - -
RS Stock No. 755-2892
Mfr. Part No.3RV2021-4NA10
BrandSiemens
PHP7,118.09
Each
units
28 A 3P Sirius Innovation 55 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS Stock No. 212-7961
Mfr. Part No.PKZM0-25
BrandEaton
PHP7,566.87
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. 187-734
Mfr. Part No.GV2RT20
PHP9,951.94
Each
units
13 → 14 A 3P TeSys - - 690 V - 89mm 44.5mm 78.5mm 89 x 44.5 x 78.5 mm - GV2R
RS Stock No. 706-1875
Mfr. Part No.3RV2021-4EA10
BrandSiemens
PHP7,118.09
Each
units
27 → 32 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS Stock No. 608-8315
Mfr. Part No.GV2L10
PHP5,058.22
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. 124-3093
Mfr. Part No.3RV2011-0AA20
BrandSiemens
PHP3,177.34
Each
units
0.11 → 0.16 A 3 Sirius Innovation 100 kA @ 400 V ac Cage Clamp 690 V ac Manual 45mm 96.9mm 106mm 45 x 106 x 96.9 mm Three Phase Motors 3RV2
RS Stock No. 608-8270
Mfr. Part No.GV2L05
PHP5,258.22
Each
units
1 → 1.7 A 3P TeSys 100 kA Screw 690 V ac Turn 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS Stock No. 124-3104
Mfr. Part No.3RV2021-1HA10
BrandSiemens
PHP3,966.42
Each
units
5.5 → 8 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. 243-7167
Mfr. Part No.3RV1011-1HA10
BrandSiemens
PHP4,326.73
Each
units
5.5 → 8 A 3P Sirius Innovation 50 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS Stock No. 706-1844
Mfr. Part No.3RV2011-4AA10
BrandSiemens
PHP4,430.22
Each
units
11 → 16 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS Stock No. 706-1866
Mfr. Part No.3RV2021-4CA10
BrandSiemens
PHP4,920.48
Each
units
17 → 22 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
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