Circuit Trips

Circuit trips react to ground faults, short circuits or thermal overload in circuit breakers. A circuit trip opens the circuit in the event of a faulty condition. The trip becomes activated when it senses heat from an overload or high current from a short circuit.


What are the different types of circuit trips?


There are two types of circuit trips: electromechanical and electronic. An electromechanical circuit trip has two moving parts that work together to determine when to open the circuit. The two parts are a current-sensitive device and a thermal-sensitive device. An electric circuit trip is less mechanical as it's a programmable device. It measures and times the current flowing through the circuit breaker, electronically delivering a trip signal when it's needed.


How to choose the right circuit trips


Choosing the right circuit trips depends on the circuit or device you're using it for. There are various features that should be considered when selecting the right circuit trips, such as rated-control voltage and the current rating.


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Description Price Current Rating Range Series For Use With Type Rated Control Voltage
RS Stock No. 121-6863
BrandRS PRO
HK$52.67
Each
units
5 A - HS MS32 & MSB32 Motor Protection Circuit Breakers Auxiliary Switch 240 (B300) V, 250 (R300) V
RS Stock No. 435-415
Mfr. Part No.2CCS800900R0271
BrandABB
HK$957.87
Each
units
- - - S800PV Series Undervoltage Release 220 → 250 V ac/dc
RS Stock No. 706-1942
Mfr. Part No.3RV2902-1DF0
BrandSiemens
HK$253.74
Each
units
- Sirius Innovation 3RV2 3RV2 Series Shunt Release 90 → 110 V ac
RS Stock No. 831-9194
Mfr. Part No.1SDA066322R1
BrandABB
HK$817.04
Each
units
- SACE 1SDA ABB Tmax XT1, ABB Tmax XT2, ABB Tmax XT3, ABB Tmax XT4 Shunt Release 24 → 30 V ac/dc
RS Stock No. 825-6194
Mfr. Part No.P2X16230
BrandLovato
HK$648.96
Each
units
3 A, 6 A - P2X P2MB Series Shunt Trip 110 → 415 V
RS Stock No. 755-2895
Mfr. Part No.3RV1991-1AA0
BrandSiemens
HK$432.20
Each
units
- Sirius Classic - 3RV1 Series - -
RS Stock No. 179-9698
Mfr. Part No.A9N26476
HK$277.42
Each
units
- Acti 9, Clario, Librio, Prodis MX C120, C40, C60, DPN, DT40, DT60, ID C40, IDc, IDPN, ITG40, Vigi Shunt Trip Release 100 → 415 V ac, 110 → 130 V dc
RS Stock No. 183-3691
Mfr. Part No.703007
BrandABB
HK$343.25
Each
units
32 A - E211 E210 Switches ON-OFF Switch 250 → 415 V ac
RS Stock No. 454-8225
Mfr. Part No.NZM1-XA380-440AC/DC
BrandEaton
HK$727.36
Each
units
- Xboard NZM1 N(S)1(-4) Series, NZM1(-4) Series Shunt Release 380 → 440 V ac/dc
RS Stock No. 701-8512
Mfr. Part No.2CCA703155R0001
BrandABB
HK$130.64
Each
units
- - - - - -
RS Stock No. 435-538
Mfr. Part No.2CCS800900R0231
BrandABB
HK$749.43
Each
units
- - - S800PV Series Shunt Release 220 → 400 V ac/dc
RS Stock No. 791-2806
Mfr. Part No.A9A26476
HK$537.68
Each
units
- Acti 9 iMX ARA, Ic60 MCB, IDPN Vigi, Ild Double Terminal, IlD MCB, ISW-NA, RCA Shunt Release 100 → 415 V ac, 110 → 130 V dc
RS Stock No. 706-1967
Mfr. Part No.3RV2902-2AP0
BrandSiemens
HK$253.74
Each
units
- Sirius Innovation 3RV2 3RV2 Series Undervoltage Release 230 V ac, 240 V ac
RS Stock No. 706-1926
Mfr. Part No.3RV2902-1AF0
BrandSiemens
HK$253.74
Each
units
- Sirius Innovation 3RV2 3RV2 Series Undervoltage Release 110 V ac, 120 V ac
RS Stock No. 825-6119
Mfr. Part No.P1X14230
BrandLovato
HK$661.23
Each
units
6 A - P1X P1MB Series Undervoltage Release 230 V
RS Stock No. 744-6970
Mfr. Part No.LAD703E
HK$606.32
Each
units
- - - LR3D Series, LRD Series - -
RS Stock No. 790-9184
Mfr. Part No.A9E18036
HK$232.12
Each
units
- Acti 9 iPB - - -
RS Stock No. 706-1945
Mfr. Part No.3RV2902-1AV1
BrandSiemens
HK$253.74
Each
units
- Sirius Innovation 3RV2 3RV2 Series Undervoltage Release 415 V ac, 480 V ac
RS Stock No. 539-0083
Mfr. Part No.2CSS200911R0002
BrandABB
HK$703.33
Each
units
- System Pro M Compact S-2C S200 Series, S200P Series Undervoltage Release 24 V ac
RS Stock No. 755-2858
Mfr. Part No.3RV1921-1M
BrandSiemens
HK$203.17
Each
units
- Sirius Classic - 3RV1 Series - -
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