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. 121-6864
BrandRS PRO
$8.24
Each
units
5 A - HS MS32 & MSB32 Motor Protection Circuit Breakers Auxiliary Switch 240 (B300) V, 250 (R300) V
RS Stock No. 121-6863
BrandRS PRO
$9.34
Each
units
5 A - HS MS32 & MSB32 Motor Protection Circuit Breakers Auxiliary Switch 240 (B300) V, 250 (R300) V
RS Stock No. 791-2812
Mfr. Part No.A9A26948
$116.54
Each
units
0.1 → 6 A Acti 9 iMX ARA, ic60 MCB, IDPN Vigi, ild Double Terminal, ilD MCB, iSW-NA, RCA Shunt Release 12 → 24 V ac/dc
RS Stock No. 537-5630
Mfr. Part No.NZM2/3-XUHIV208-240AC
BrandEaton
$191.40
Each
units
- Xboard NZM2 N(S)2(-4) Series, N(S)3(-4) Series, NZM2(-4) Series, NZM3(-4) Series Undervoltage Release 208 → 240 V ac
RS Stock No. 791-2799
Mfr. Part No.A9A26960
$225.14
Each
units
- Acti 9 iMN ARA, ic60 MCB, IDPN Vigi, ild Double Terminal, ilD MCB, iSW-NA, RCA Undervoltage Release 220 → 240 V ac
RS Stock No. 776-2938
Mfr. Part No.A9N26500
$145.19
Each
units
- Acti 9 - C120 Series, C60 Series, ID Residual Current Device Overload Release 230 V ac
RS Stock No. 744-6958
Mfr. Part No.LA7D03B
$135.84
Each
units
- - - All Relays Except LRD 01 Through LRD 35, LR3 D01 Through LRD D35, LRD 3 and Higher, LRD 3..L,LR3 D3.. - -
RS Stock No. 790-9190
Mfr. Part No.A9E18034
$43.52
Each
units
- Acti 9 iPB - - -
RS Stock No. 744-8642
Mfr. Part No.VBF02
$74.68
Each
units
- - - - - -
RS Stock No. 791-2818
Mfr. Part No.A9A26478
$73.50
Each
units
- Acti 9 iMX ARA, ic60 MCB, IDPN Vigi, ild Double Terminal, ilD MCB, iSW-NA, RCA Shunt Release 12 → 24 V ac/dc
RS Stock No. 744-6961
Mfr. Part No.LAD703B
$126.21
Each
units
- - - LR3D Series, LRD Series - -
RS Stock No. 790-9175
Mfr. Part No.A9E18030
$29.93
Each
units
- Acti 9 iPB - - -
RS Stock No. 790-9184
Mfr. Part No.A9E18036
$51.11
Each
units
- Acti 9 iPB - - -
RS Stock No. 537-5646
Mfr. Part No.NZM2/3-XUHIV380-440AC
BrandEaton
$259.24
Each
units
- Xboard NZM2 N(S)2(-4) Series, N(S)3(-4) Series, NZM2(-4) Series, NZM3(-4) Series Undervoltage Release 380 → 440 V ac
RS Stock No. 744-6973
Mfr. Part No.LAD703F
$85.17
Each
units
- - - LR3D Series, LRD Series - -
RS Stock No. 537-5674
Mfr. Part No.NZM2/3-XA380-440AC/DC
BrandEaton
$150.59
Each
units
- Xboard NZM2 LZM Series, N(S)2(-4) Series, N(S)3(-4) Series, NZM2(-4) Series, NZM3(-4) Series Shunt Release 380 → 440 V ac/dc
RS Stock No. 435-415
Mfr. Part No.2CCS800900R0271
BrandABB
$169.25
Each
units
- - - S800PV Series Undervoltage Release 220 → 250 V ac/dc
RS Stock No. 539-0112
Mfr. Part No.2CSS200911R0005
BrandABB
$108.85
Each
units
- System Pro M Compact S-2V S280 UC Series Undervoltage Release 220 V ac/dc
RS Stock No. 145-027
Mfr. Part No.16188
$55.53
Each
units
- - - - - -
RS Stock No. 706-1967
Mfr. Part No.3RV2902-2AP0
BrandSiemens
$48.58
Each
units
- Sirius Innovation 3RV2 3RV2 Series Undervoltage Release 230 V ac, 240 V ac
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