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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Omschrijving Prijs Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
RS-stocknr. 243-7072
Fabrikantnummer3RV1011-0JA10
FabrikantSiemens
€ 59,90
Each
Aantal stuks
0.7 → 1 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-stocknr. 124-3097
Fabrikantnummer3RV2011-1BA15
FabrikantSiemens
€ 88,20
Each
Aantal stuks
1.4 → 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-stocknr. 706-1774
Fabrikantnummer3RV2011-1AA10
FabrikantSiemens
€ 68,60
Each
Aantal stuks
1.1 → 1.6 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 706-1796
Fabrikantnummer3RV2011-1DA10
FabrikantSiemens
€ 71,60
Each
Aantal stuks
2.2 → 3.2 A 3P Sirius Innovation 10 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 246-4901
Fabrikantnummer3RV1021-4AA10
FabrikantSiemens
€ 80,90
Each
Aantal stuks
11 → 16 A 3P Sirius Innovation 50 kA Screw 690 V - 97mm 45mm 96mm 97 x 45 x 96 mm - 3RV1
RS-stocknr. 246-5027
Fabrikantnummer3RV1041-4KA10
FabrikantSiemens
€ 254,00
Each
Aantal stuks
57 → 75 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
RS-stocknr. 706-1778
Fabrikantnummer3RV2011-1AA20
FabrikantSiemens
€ 68,60
Each
Aantal stuks
1.1 → 1.6 A 3P Sirius Innovation 100 kA Cage Clamp 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 706-1787
Fabrikantnummer3RV2011-1BA10
FabrikantSiemens
€ 71,60
Each
Aantal stuks
1.4 → 2 A 3P Sirius Innovation 10 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 706-1863
Fabrikantnummer3RV2021-4DA10
FabrikantSiemens
€ 106,00
Each
Aantal stuks
20 → 25 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 246-4967
Fabrikantnummer3RV1031-4EA10
FabrikantSiemens
€ 165,00
Each
Aantal stuks
22 → 32 A 3P Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm - 3RV1
RS-stocknr. 246-5011
Fabrikantnummer3RV1041-4JA10
FabrikantSiemens
€ 228,00
Each
Aantal stuks
45 → 63 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
RS-stocknr. 706-1800
Fabrikantnummer3RV2011-1EA10
FabrikantSiemens
€ 71,60
Each
Aantal stuks
2.8 → 4 A 3P Sirius Innovation 6 kA Screw 690 V - 109mm 45mm 91mm 109 x 45 x 91 mm - 3RV2
RS-stocknr. 706-1822
Fabrikantnummer3RV2011-1HA10
FabrikantSiemens
€ 71,60
Each
Aantal stuks
5.5 → 8 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 246-5049
Fabrikantnummer3RV1041-4MA10
FabrikantSiemens
€ 300,00
Each
Aantal stuks
80 → 100 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
RS-stocknr. 243-7088
Fabrikantnummer3RV1011-0KA10
FabrikantSiemens
€ 63,50
Each
Aantal stuks
0.9 → 1.25 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-stocknr. 246-4894
Fabrikantnummer3RV1021-1KA10
FabrikantSiemens
€ 80,90
Each
Aantal stuks
9 → 12.5 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 96mm 97 x 45 x 96 mm - 3RV1
RS-stocknr. 706-1853
Fabrikantnummer3RV2021-4BA10
FabrikantSiemens
€ 87,00
Each
Aantal stuks
14 → 20 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 706-1819
Fabrikantnummer3RV2011-1GA10
FabrikantSiemens
€ 71,60
Each
Aantal stuks
4.5 → 6.3 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 706-1768
Fabrikantnummer3RV2011-0JA20
FabrikantSiemens
€ 64,80
Each
Aantal stuks
0.7 → 1 A 3P Sirius Innovation 100 kA Cage Clamp 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 243-7123
Fabrikantnummer3RV1011-1DA10
FabrikantSiemens
€ 66,80
Each
Aantal stuks
2.2 → 3.2 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1