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. 492-1529
Fabrikantnummer278481 & PKZM01-2,5
FabrikantEaton
60,24 €
Each
Aantal stuks
1.6 → 2.5 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
RS-stocknr. 395-0324
FabrikantnummerGV2ME02
53,42 €
Each
Aantal stuks
0.16 → 0.25 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 706-1718
Fabrikantnummer3RV2011-0BA10
FabrikantSiemens
55,44 €
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. 243-7139
Fabrikantnummer3RV1011-1EA10
FabrikantSiemens
71,28 €
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. 246-4967
Fabrikantnummer3RV1031-4EA10
FabrikantSiemens
207,00 €
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. 305-2206
FabrikantnummerGV2P14
101,72 €
Each
Aantal stuks
6 → 10 A 3P TeSys 6 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS-stocknr. 706-1784
Fabrikantnummer3RV2011-1CA10
FabrikantSiemens
66,33 €
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
98,10 €
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. 608-8321
FabrikantnummerGV2L14
80,67 €
Each
Aantal stuks
5.5 → 8 A, 7 → 10 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS-stocknr. 124-3108
Fabrikantnummer3RV2031-4EA10
FabrikantSiemens
154,80 €
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. 395-0318
FabrikantnummerGV2ME03
53,42 €
Each
Aantal stuks
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-stocknr. 492-1507
Fabrikantnummer278479 & PKZM01-1
FabrikantEaton
55,78 €
Each
Aantal stuks
0.63 → 1 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
RS-stocknr. 243-7145
Fabrikantnummer3RV1011-1FA10
FabrikantSiemens
71,28 €
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. 395-0201
FabrikantnummerGV2ME22
94,14 €
Each
Aantal stuks
20 → 25 A 3P TeSys 3 kA @ 690 V ac, 4 kA @ 500 V ac, 6 kA @ 440 V ac, 15 kA @ 400/415 V ac, 50 kA @ 230/240 V ac Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm Motor Protection GV2M
RS-stocknr. 413-1619
FabrikantnummerGV2ME143
76,61 €
Each
Aantal stuks
6 → 10 A 3P TeSys 10 kA Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 312-5269
Fabrikantnummer088913 & PKZM0-2,5-T
FabrikantEaton
63,70 €
Each
Aantal stuks
1.6 → 2.5 A 3P - 150 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 818-132
Fabrikantnummer072733 & PKZM0-0,63
FabrikantEaton
56,76 €
Each
Aantal stuks
0.4 → 0.63 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 124-3101
Fabrikantnummer3RV2021-1DA10
FabrikantSiemens
69,21 €
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. 413-1568
FabrikantnummerGV2ME053
66,60 €
Each
Aantal stuks
0.63 → 1 A 3P TeSys - Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0295
FabrikantnummerGV2ME05
63,45 €
Each
Aantal stuks
0.63 → 1 A 3P TeSys 100 kA Screw 690 V Manual 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm Motor Protection GV2M
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