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. 395-0239
FabrikantnummerGV2ME14
€ 81,95
Each
Aantal stuks
6 → 10 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0245
FabrikantnummerGV2ME10
€ 70,50
Each
Aantal stuks
4 → 6.3 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0251
FabrikantnummerGV2ME08
€ 70,50
Each
Aantal stuks
2.5 → 4 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 818-182
FabrikantnummerPKZM0-6,3
FabrikantEaton
€ 74,58
Each
Aantal stuks
4 → 6.3 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 818-126
FabrikantnummerPKZM0-0,4
FabrikantEaton
€ 55,52
Each
Aantal stuks
0.25 → 0.4 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 492-1535
FabrikantnummerPKZM01-4
FabrikantEaton
€ 58,71
Each
Aantal stuks
2.5 → 4 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
RS-stocknr. 212-7955
FabrikantnummerPKZM0-16
FabrikantEaton
€ 86,35
Each
Aantal stuks
10 → 16 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 395-0295
FabrikantnummerGV2ME05
€ 70,50
Each
Aantal stuks
0.63 → 1 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
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. 818-154
FabrikantnummerPKZM0-1,6
FabrikantEaton
€ 74,58
Each
Aantal stuks
1 → 1.6 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
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. 351-5347
Fabrikantnummer140M-C2E-B16
FabrikantAllen Bradley
€ 67,40
Each
Aantal stuks
1 → 1.6 A 3P - 100 kA - 415 V - 90mm 45mm 74mm 90 x 45 x 74 mm - 140M
RS-stocknr. 395-0267
FabrikantnummerGV2ME07
€ 70,50
Each
Aantal stuks
1.6 → 2.5 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 351-5404
Fabrikantnummer140M-C2E-C16
FabrikantAllen Bradley
€ 80,20
Each
Aantal stuks
10 → 16 A 3P - 50 kA - 415 V - 90mm 45mm 74mm 90 x 45 x 74 mm - 140M
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. 395-0346
FabrikantnummerGV2ME01
€ 59,35
Each
Aantal stuks
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-stocknr. 351-5325
Fabrikantnummer140M-C2E-A63
FabrikantAllen Bradley
€ 61,90
Each
Aantal stuks
0.45 → 0.63 A 3P - 100 kA - 415 V - 90mm 45mm 74mm 90 x 45 x 74 mm - 140M
RS-stocknr. 312-5269
FabrikantnummerPKZM0-2,5-T
FabrikantEaton
€ 73,11
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. 121-6846
FabrikantRS PRO
€ 27,42
Each
Aantal stuks
0.25 → 0.4 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
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