Motor Protection Circuit Breakers

pMotor protection circuit breakers act as protection devices for a href="https://uk.rs-online.com/web/c/automation-control-gear/electric-motors-motor-controllers-peripherals/" target="_blank" title="electric motors"electric motors/a, 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./p pbr/p h3What are motor protection circuit breakers used for?/h3 pMotor 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./p pbr/p h3Types of motor protection circuit breakers/h3 pMotor protection circuit breakers come in A type or B type classifications, dependent on utilisation and function./p pbr/p pThe 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./p pbr/p pType 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./p

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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. 136-7862
Mfr. Part No.SM1X18200
BrandLovato
HK$328.30
Each
units
- - - - - - - 200 (Rod)mm - - - SM1R Motor Protection Circuit Breakers SM1X
RS Stock No. 136-7850
Mfr. Part No.SM1X1211
BrandLovato
HK$64.57
Each
units
10 A 2 - - Screw 690 V - 9mm 80mm 90mm 9 x 80 x 90 mm SM1 Motor Protection Circuit Breakers SM1X
RS Stock No. 146-9051
Mfr. Part No.SM2R5000
BrandLovato
HK$1,903.68
Each
units
35 → 50 A 3 - 50 kA Screw 400 V Rotary Knob 55mm 144.6mm 125mm 55 x 144.6 x 125 mm Motor Protection SM2R
RS Stock No. 136-7863
Mfr. Part No.SM1X18200R
BrandLovato
HK$328.30
Each
units
- - - - - - - 200 (Rod)mm - - - SM1R Motor Protection Circuit Breakers SM1X
RS Stock No. 136-7872
Mfr. Part No.SM1X9050
BrandLovato
HK$213.40
Each
units
63 A - - - Screw - - - - - - All Busbar, SM1R Motor Protection Circuit Breakers SM1X
RS Stock No. 136-7851
Mfr. Part No.SM1X1220
BrandLovato
HK$64.57
Each
units
10 A 2 - - Screw 690 V - 9mm 80mm 90mm 9 x 80 x 90 mm SM1 Motor Protection Circuit Breakers SM1X
RS Stock No. 136-7840
Mfr. Part No.SM1R1000
BrandLovato
HK$474.83
Each
units
6.3 → 10 A 3 - 100 (Ics) kA, 100 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R
RS Stock No. 136-7853
Mfr. Part No.SM1X14110
BrandLovato
HK$194.57
Each
units
- - - - Screw 110 V ac - 18mm 80mm 90mm 18 x 80 x 90 mm SM1 Motor Protection Circuit Breakers SM1X
RS Stock No. 136-7842
Mfr. Part No.SM1R1800
BrandLovato
HK$493.78
Each
units
13 → 18 A 3 - 100 (Ics) kA, 100 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R
RS Stock No. 136-7854
Mfr. Part No.SM1X14230
BrandLovato
HK$194.57
Each
units
- - - - Screw 230 V ac - 18mm 80mm 90mm 18 x 80 x 90 mm SM1 Motor Protection Circuit Breakers SM1X
RS Stock No. 146-9052
Mfr. Part No.SM2R6300
BrandLovato
HK$1,955.29
Each
units
46 → 63 A 3 - 50 kA Screw 400 V Rotary Knob 55mm 144.6mm 125mm 55 x 144.6 x 125 mm Motor Protection SM2R
RS Stock No. 136-7866
Mfr. Part No.SM1X3040R
BrandLovato
HK$89.92
Each
units
- - - - - - - - - - - SM1R Motor Protection Circuit Breakers SM1X
RS Stock No. 136-7860
Mfr. Part No.SM1X16400
BrandLovato
HK$197.69
Each
units
- - - - Screw 400 V ac - 18mm 80mm 90mm 18 x 80 x 90 mm SM1 Motor Protection Circuit Breakers SM1X
RS Stock No. 146-9055
Mfr. Part No.SM3R9900
BrandLovato
HK$2,585.59
Each
units
80 → 100 A 3 - 50 kA Screw 400 V Rotary Knob 70mm 169mm 165mm 70 x 169 x 165 mm Motor Protection SM3R
RS Stock No. 136-7841
Mfr. Part No.SM1R1400
BrandLovato
HK$493.78
Each
units
9 → 14 A 3 - 100 (Ics) kA, 100 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R
RS Stock No. 136-7873
Mfr. Part No.SM1Z1710R
BrandLovato
HK$324.20
Each
units
- - - - - - - 100mm 137.8mm 159mm 100 x 137.8x 159 mm SM1P Motor Protection Circuit Breakers, SM1R Black Handle SM1Z
RS Stock No. 136-7834
Mfr. Part No.SM1R0063
BrandLovato
HK$359.44
Each
units
0.4 → 0.63 A 3 - 100 (Ics) kA, 100 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R
RS Stock No. 136-7845
Mfr. Part No.SM1R3200
BrandLovato
HK$791.55
Each
units
24 → 32 A 3 - 25 (Ics) kA, 50 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R
RS Stock No. 136-7843
Mfr. Part No.SM1R2300
BrandLovato
HK$514.42
Each
units
17 → 23 A 3 - 25 (Ics) kA, 50 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R
RS Stock No. 136-7835
Mfr. Part No.SM1R0100
BrandLovato
HK$382.74
Each
units
0.63 → 1 A 3 - 100 (Ics) kA, 100 (Icu) kA Screw 690 V Rotary Knob 44.8mm 91.1mm 96.6mm 44.8 x 91.1 x 96.6 mm High IE3 Efficiency Value Motors SM1R