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

2173 Products showing for Surge Protection Components

1 of 109
Temporarily out of stock
Bourns, MOV-14D Metal Oxide Varistor 430 pF 50 A, Clamping 775 V, Varistor 470 V
  • RS Stock No. 851-8335
  • Mfr. Part No. MOV-14D471K
Subtotal (1 unit)
$0.61(exc. GST)
$0.61/unit
Temporarily out of stock
Bourns, AVHT Varistor 4.5 nF 5 A, Clamping 40 V, Varistor 24 V, 1812
  • RS Stock No. 211-1062
  • Mfr. Part No. AV14K1812801NIR1HT
Subtotal (1 tape of 10 units)
$16.80(exc. GST)
$1.68/unit
In Stock
BC Components Thermistor, NTC Type 22 kΩ 3.75 mm 24 mm 3 mm
  • RS Stock No. 538-0840
  • Mfr. Part No. NTCLE100E3223JB0
Subtotal (1 pack of 5 units)
$5.33(exc. GST)
$1.066/unit
In Stock
TDK Thermistor, NTC Type 3 kΩ 6.5 mm 2.41 mm
  • RS Stock No. 528-8508
  • Mfr. Part No. B57861S0302J040
Subtotal (1 unit)
$3.47(exc. GST)
$3.47/unit
In Stock
Amphenol Advanced Sensors Thermistor 47 Ω
  • RS Stock No. 210-4330
  • Mfr. Part No. CL-80
Subtotal (1 pack of 10 units)
$27.19(exc. GST)
$2.719/unit
In Stock
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating 30 A Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7118
  • Mfr. Part No. 2906848
Subtotal (1 unit)
$57.02(exc. GST)
$57.02/unit
Stocked by manufacturer
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating 5 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7144
  • Mfr. Part No. 2906731
Subtotal (1 unit)
$268.11(exc. GST)
$268.11/unit
Stocked by manufacturer
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating 10 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7160
  • Mfr. Part No. 2906816
Subtotal (1 unit)
$333.66(exc. GST)
$333.66/unit
In Stock
WJ Furse, ESP Cat-6 Surge Suppressor Unit 58V Maximum Voltage Rating 10 kA Maximum Surge Current Cat-6 PoE Surge
  • RS Stock No. 788-6763
  • Mfr. Part No. 7TCA085400R0024 ESP CAT-6/POE
Subtotal (1 unit)
$928.94(exc. GST)
$928.94/unit
In Stock
Vishay NTC Thermistor, NTC Type 10 kΩ 41 mm 1.6 mm 1.6 mm
  • RS Stock No. 179-3874
  • Mfr. Part No. NTCLE305E4103SB
Subtotal (1 bag of 10 units)
$22.54(exc. GST)
$2.254/unit
In Stock
TDK Thermistor, PTC Type 3.7 Ω, Leaded Disks 25.5 mm 22 mm 5 mm
  • RS Stock No. 191-1771
  • Mfr. Part No. B59830C0120A070
Subtotal (1 unit)
$4.26(exc. GST)
$4.26/unit
In Stock
Vishay Thermistor, NTC Type 2.7 kΩ 9 mm 3.3 mm 3 mm
  • RS Stock No. 754-6639
  • Mfr. Part No. NTCLE100E3272JB0
Subtotal (1 pack of 5 units)
$4.62(exc. GST)
$0.924/unit
In Stock
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating 5 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7132
  • Mfr. Part No. 2906862
Subtotal (1 unit)
$52.54(exc. GST)
$52.54/unit
In Stock
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating 10 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7136
  • Mfr. Part No. 2906804
Subtotal (1 unit)
$250.64(exc. GST)
$250.64/unit
Temporarily out of stock
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating 10 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7138
  • Mfr. Part No. 2906806
Subtotal (1 unit)
$239.45(exc. GST)
$239.45/unit
In Stock
RS PRO Thermistor, NTC Type 50 kΩ, DO-35 7 mm 4.2 mm 4.2 mm
  • RS Stock No. 198-955
Subtotal (1 pack of 5 units)
$6.43(exc. GST)
$1.286/unit
In Stock
Weidmüller, VARITECTOR Surge Protection Device 42V Maximum Voltage Rating 10 kA Maximum Surge Current
  • RS Stock No. 902-8063
  • Mfr. Part No. 1063930000
Subtotal (1 unit)
$161.30(exc. GST)
$161.30/unit
Temporarily out of stock
Dehn, DV Modular Surge Protector 255V ac Maximum Voltage Rating 100 kA Maximum Surge Current Lightning Arrester
  • RS Stock No. 768-1716
  • Mfr. Part No. DV M TNS 255 FM
Subtotal (1 unit)
$4,849.06(exc. GST)
$4,849.06/unit
Temporarily out of stock
WJ Furse, ESP Cat-6 Surge Suppressor Unit 5V Maximum Voltage Rating 10 kA Maximum Surge Current Cat-6 Surge Protector
  • RS Stock No. 788-6769
  • Mfr. Part No. 7TCA085400R0023 ESP CAT-6
Subtotal (1 unit)
$704.82(exc. GST)
$704.82/unit
In Stock
Dehn, DGA Coaxial Surge Protection 6.4V Maximum Voltage Rating 10 kA Maximum Surge Current Surge Arrester
  • RS Stock No. 768-1855
  • Mfr. Part No. DGA BNC VCID
Subtotal (1 unit)
$593.98(exc. GST)
$593.98/unit
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