Surge Protection Components

It is important to protect any electrical equipment or circuitry you have from the harmful effects of power surges, so choose from our range of protective devices and components today. We’re able to offer you a wide variety of quality products from leading manufacturers including Bourns, Huber & Suhner, ON Semiconductor and Siemens.

How does surge protection work?

Power surges are a sudden increase in the electrical current being routed into power outlets. If a power surge happens, irreparable damage to equipment can be caused.

Surge protection is an essential and effective way of preventing this damage from occurring and can take many forms, from specialist plug sockets that absorb the additional voltage to components that can be used in the equipment itself.

What causes a power surge?

Power surges happen when the flow of electricity is briefly interrupted and started again. They can occur when equipment starts up or shut off. Classic examples of this would be air conditioning units, refrigeration equipment or motor-driven devices.

Power surges can also happen naturally, like a lightning strike or power lines coming down in a storm. They can also happen after mains power cuts when the power returns.

What is the difference between a surge and a spike?

  • If overvoltage increases for three nanoseconds or more this is called a surge.
  • If overvoltage increases for one or two nanoseconds this is called a spike.

What types of surge protection components are there?

Gas discharge tubes- a glass tube which is sealed at both ends, contains two electrodes and is filled with a gas that conducts electricity when a high voltage is applied. This type of component can be used to protect sensitive circuits.

Surge suppressor units - a common type of component, a surge suppressor unit can be built into a device, such as a power strip, or used as a standalone component.

Switching spark gap - these are used to switch between circuits quickly and are often used in the building and automotive industries.

Gas Discharge Tubes
Gas Discharge Tubes
Surge Suppressor Units
Surge Suppressor Units
Switching Spark Gaps
Switching Spark Gaps
Thermistor ICs
Thermistor ICs
Varistors
Varistors

4216 Products showing for Surge Protection Components

1 of 211
Temporarily out of stock
TDK, Standard Metal Oxide Varistor 4000 pF 1200 A, Clamping 77 V, Varistor 47 V, 2220
  • RS Stock No. 246-9784
  • Mfr. Part No. B72540T0300K062
Subtotal (1 reel of 1000 units)
HK$6,512.00
HK$6.512/unit
In Stock
Bourns, GMOV Varistor 4 pF 6000 A, Clamping 675 V, Varistor 320 V dc, 250 Vrms, Disc
  • RS Stock No. 186-2131
  • Mfr. Part No. GMOV-14D251K
Subtotal (1 pack of 5 units)
HK$63.90
HK$12.78/unit
In Stock
Panasonic, V14 Varistor 330 pF 50 A, Clamping 1025 V, Varistor 620 V
  • RS Stock No. 439-792
  • Mfr. Part No. ERZV14D621
Subtotal (1 pack of 10 units)
HK$35.10
HK$3.51/unit
Temporarily out of stock
TDK Thermistor, NTC Type 5 Ω, Leaded and Coated Disks 23 mm 16 mm 7 mm
  • RS Stock No. 185-7632
  • Mfr. Part No. B57238S0509M000
Subtotal (1 box of 500 units)
HK$3,346.00
HK$6.692/unit
In Stock
Littelfuse, LA Varistor Metal Oxide Varistor 200 pF 25 A, Clamping 2700 V, Varistor 430 V, Disc
  • RS Stock No. 800-7065
  • Mfr. Part No. V275LA10P
Subtotal (1 pack of 10 units)
HK$21.20
HK$2.12/unit
Temporarily out of stock
TDK NTC Thermistor, NTC Type 10 kΩ 5.5 mm 2.5 mm 2.5 mm
  • RS Stock No. 146-0111
  • Mfr. Part No. B57871S0103F002
Subtotal (1 box of 1000 units)
HK$12,923.00
HK$12.923/unit
In Stock
SEMITEC Thermistor, NTC Type 10 kΩ 45 mm 3.6 mm 3.6 mm
  • RS Stock No. 352-954
  • Mfr. Part No. 103JT-050
Subtotal (1 pack of 5 units)
HK$36.70
HK$7.34/unit
In Stock
TDK, Standard Metal Oxide Varistor 4.95 nF 10 A, Clamping 2970 V, Varistor 47 V
  • RS Stock No. 204-1930
  • Mfr. Part No. B72214S0300K101
Subtotal (1 pack of 5 units)
HK$12.40
HK$2.48/unit
In Stock
Littelfuse, ZA Varistor Metal Oxide Varistor 9.29 nF 10 A, Clamping 1240 V, Varistor 33 V, Radial Leaded Ceramic Disc
  • RS Stock No. 543-5209
  • Mfr. Part No. V33ZA5P
Subtotal (1 pack of 5 units)
HK$18.10
HK$3.62/unit
In Stock
TDK Thermistor, NTC Type 1 Ω 7 mm 15 mm 7 mm
  • RS Stock No. 216-1387
  • Mfr. Part No. B57237S0109M000
Subtotal (1 unit)
HK$8.10
HK$8.10/unit
Temporarily out of stock
TDK, HighE Varistor 2.2 nF 200 A, Clamping 650 V, Varistor 390 V
  • RS Stock No. 146-2737
  • Mfr. Part No. B72232B0251K001
Subtotal (1 unit)
HK$183.00
HK$183.00/unit
In Stock
TDK, EHV 230 V dc 25 kA, Through Hole 3 Electrode Arrester Gas Discharge Tube
  • RS Stock No. 703-1070
  • Mfr. Part No. B88069X8740B502
Subtotal (1 unit)
HK$21.40
HK$21.40/unit
In Stock
TDK, CT Multilayer Varistor 1 A, Clamping 19 V
  • RS Stock No. 703-1666
  • Mfr. Part No. B72510T0040M062
Subtotal (1 pack of 10 units)
HK$15.70
HK$1.57/unit
Temporarily out of stock
WJ Furse, ESP E Surge Suppressor Unit 16.7V Maximum Voltage Rating 20 kA Maximum Surge Current Twisted Pair Surge
  • RS Stock No. 456-8162
  • Mfr. Part No. 7TCA085400R0095 ESP 15E
Subtotal (1 unit)
HK$1,446.80
HK$1,446.80/unit
In Stock
TDK Thermistor, NTC Type 7 Ω 7 mm 15 mm 7 mm
  • RS Stock No. 216-1466
  • Mfr. Part No. B57237S0709M000
Subtotal (1 unit)
HK$6.20
HK$6.20/unit
Temporarily out of stock
Bourns, DV Varistor 100 pF 5 A, Clamping 650 V, Varistor 390 V, 3225
  • RS Stock No. 204-8685
  • Mfr. Part No. DV250K3225R2
Subtotal (1 pack of 10 units)
HK$53.10
HK$5.31/unit
Temporarily out of stock
Bourns, AV Varistor 7 nF 10 A, Clamping 54 V, Varistor 22 V, 2220
  • RS Stock No. 209-8098
  • Mfr. Part No. AV20K2220122NIR1
Subtotal (1 reel of 1000 units)
HK$6,111.00
HK$6.111/unit
In Stock
TDK, AdvancedD-MP Metal Oxide Varistor 410 pF 50 A, Clamping 910 V, Varistor 560 V
  • RS Stock No. 241-6756
  • Mfr. Part No. B72214P2351K101
Subtotal (1 pack of 5 units)
HK$24.80
HK$4.96/unit
In Stock
TDK, CU Varistor 10 A, Clamping 775 V
  • RS Stock No. 167-0548
  • Mfr. Part No. B72660M0301K072
Subtotal (1 reel of 1000 units)
HK$5,798.00
HK$5.798/unit
In Stock
Phoenix Contact, CN-UB-280DC-SB Coaxial Surge Protection 280V dc Maximum Voltage Rating 20 kA Maximum Surge Current
  • RS Stock No. 648-6028
  • Mfr. Part No. 2818148
Subtotal (1 unit)
HK$1,214.70
HK$1,214.70/unit
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