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. 246-5011
Fabrikantnummer3RV1041-4JA10
FabrikantSiemens
250,80 €
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. 875-1125
Fabrikantnummer3RV2031-4WA10
FabrikantSiemens
236,00 €
Each
Aantal stuks
42 → 52 A 3 Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm Motor Protection 3RV2
RS-stocknr. 243-7139
Fabrikantnummer3RV1011-1EA10
FabrikantSiemens
66,80 €
Each
Aantal stuks
2.8 → 4 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-stocknr. 706-1718
Fabrikantnummer3RV2011-0BA10
FabrikantSiemens
59,90 €
Each
Aantal stuks
0.14 → 0.2 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 246-4967
Fabrikantnummer3RV1031-4EA10
FabrikantSiemens
181,50 €
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. 706-1784
Fabrikantnummer3RV2011-1CA10
FabrikantSiemens
63,50 €
Each
Aantal stuks
1.8 → 2.5 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. 124-3108
Fabrikantnummer3RV2031-4EA10
FabrikantSiemens
180,00 €
Each
Aantal stuks
22 → 32 A 3 Sirius Innovation 100 kA @ 400 V ac Screw 690 V ac Manual 55mm 149.4mm 140mm 55 x 140 x 149.4 mm Three Phase Motors SRV2
RS-stocknr. 243-7145
Fabrikantnummer3RV1011-1FA10
FabrikantSiemens
66,80 €
Each
Aantal stuks
3.5 → 5 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-stocknr. 124-3101
Fabrikantnummer3RV2021-1DA10
FabrikantSiemens
74,70 €
Each
Aantal stuks
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-stocknr. 706-1829
Fabrikantnummer3RV2011-1JA10
FabrikantSiemens
71,10 €
Each
Aantal stuks
7 → 10 A 3P Sirius Innovation 6 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. 246-4989
Fabrikantnummer3RV1031-4GA10
FabrikantSiemens
233,20 €
Each
Aantal stuks
36 → 45 A 3P Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm - 3RV1
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. 243-7094
Fabrikantnummer3RV1011-1AA10
FabrikantSiemens
63,50 €
Each
Aantal stuks
1.1 → 1.6 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-stocknr. 706-1819
Fabrikantnummer3RV2011-1GA10
FabrikantSiemens
63,50 €
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. 706-1774
Fabrikantnummer3RV2011-1AA10
FabrikantSiemens
60,70 €
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. 706-1875
Fabrikantnummer3RV2021-4EA10
FabrikantSiemens
134,00 €
Each
Aantal stuks
27 → 32 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS-stocknr. 755-2892
Fabrikantnummer3RV2021-4NA10
FabrikantSiemens
134,00 €
Each
Aantal stuks
28 A 3P Sirius Innovation 55 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS-stocknr. 246-5033
Fabrikantnummer3RV1041-4LA10
FabrikantSiemens
298,10 €
Each
Aantal stuks
70 → 90 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1