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

4437 Products showing for Surge Protection Components

1 of 222
In Stock
TDK, Standard Metal Oxide Varistor 9.35 nF 20 A, Clamping 93 V, Varistor 47 V
  • RS Stock No. 289-7597
  • Mfr. Part No. B72220S0300K101
Subtotal (1 pack of 5 units)
$6.41(exc. GST)
$1.282/unit
In Stock
Vishay NTC Thermistor, NTC Type 10 kΩ 9 mm 3.3 mm 3 mm
  • RS Stock No. 179-3836
  • Mfr. Part No. NTCLE100E3103GB0
Subtotal (1 bag of 20 units)
$26.82(exc. GST)
$1.341/unit
In Stock
TDK Thermistor, PTC Type 45 Ω, Leaded Disks 12.5 mm 35 mm 5 mm
  • RS Stock No. 191-1850
  • Mfr. Part No. B59873C0120A070
Subtotal (1 unit)
$2.20(exc. GST)
$2.20/unit
In Stock
Red Lion, R-C Surge Suppressor Unit 250V dc Maximum Voltage Rating Inductive Load Suppressor
  • RS Stock No. 905-5771
  • Mfr. Part No. SNUB0000
Subtotal (1 unit)
$39.28(exc. GST)
$39.28/unit
In Stock
TDK, Standard Metal Oxide Varistor 13 nF 20 A, Clamping 65 V, Varistor 33 V
  • RS Stock No. 204-1974
  • Mfr. Part No. B72220S0200K101
Subtotal (1 pack of 5 units)
$6.09(exc. GST)
$1.218/unit
In Stock
RS PRO Thermistor, NTC Type 10 kΩ 63.5 mm 63.5 mm 2.4 mm
  • RS Stock No. 151-237
Subtotal (1 unit)
$11.42(exc. GST)
$11.42/unit
In Stock
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating Surge Protection Device
  • RS Stock No. 135-7121
  • Mfr. Part No. 2906851
Subtotal (1 unit)
$39.55(exc. GST)
$39.55/unit
In Stock
Littelfuse, LA Varistor Metal Oxide Varistor 900 pF 100 A, Clamping 2700 V, Varistor 430 V, Disc
  • RS Stock No. 543-5142
  • Mfr. Part No. V275LA40AP
Subtotal (1 pack of 5 units)
$7.08(exc. GST)
$1.416/unit
Stocked by manufacturer
Phoenix Contact, PT-IQ Surge Protector 24V Maximum Voltage Rating 20 kA Maximum Surge Current Protective Plug
  • RS Stock No. 802-6612
  • Mfr. Part No. 2800787
Subtotal (1 unit)
$374.67(exc. GST)
$374.67/unit
Last RS stock
TDK, AdvancedD Metal Oxide Varistor 410 pF 100 A, Clamping 1500 V, Varistor 910 V
  • RS Stock No. 241-6789
  • Mfr. Part No. B72220S2551K101
Subtotal (1 bag of 200 units)
$362.60(exc. GST)
$1.813/unit
In Stock
Dehn, DG Modular Surge Protector 350 V dc, 275V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS Stock No. 768-1779
  • Mfr. Part No. DG S 275
Subtotal (1 unit)
$154.50(exc. GST)
$154.50/unit
In Stock
Phoenix Contact, TTC Surge Protector 36V dc Maximum Voltage Rating 5 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 135-7130
  • Mfr. Part No. 2906860
Subtotal (1 unit)
$48.06(exc. GST)
$48.06/unit
In Stock
TDK Thermistor, NTC Type 1 Ω 31 mm 26 mm 7 mm
  • RS Stock No. 185-7763
  • Mfr. Part No. B57464S0109M000
Subtotal (1 unit)
$8.39(exc. GST)
$8.39/unit
Temporarily out of stock
Vishay NTC Thermistor, NTC Type 10 kΩ 10 mm 1 m 3 mm
  • RS Stock No. 179-3784
  • Mfr. Part No. NTCLE413E2103F102L
Subtotal (1 box of 100 units)
$178.20(exc. GST)
$1.782/unit
In Stock
Phoenix Contact, PT-BE/FM Surge Suppressor Unit 240V Maximum Voltage Rating T3
  • RS Stock No. 445-5274
  • Mfr. Part No. 2839282
Subtotal (1 unit)
$83.59(exc. GST)
$83.59/unit
In Stock
Phoenix Contact, PLT-SEC Surge Protection Device 24V ac/dc Maximum Voltage Rating 0.026 kA Maximum Surge Current Type 3
  • RS Stock No. 188-8249
  • Mfr. Part No. 2907916
Subtotal (1 unit)
$311.55(exc. GST)
$311.55/unit
In Stock
TDK Thermistor, NTC Type 10 Ω, Leaded and Coated Disks 18 mm 11 mm 6 mm
  • RS Stock No. 769-1861
  • Mfr. Part No. B57211P0100M301
Subtotal (1 pack of 5 units)
$7.20(exc. GST)
$1.44/unit
In Stock
TDK Thermistor, PTC Type 6 Ω 21 mm 35 mm 5 mm
  • RS Stock No. 191-1793
  • Mfr. Part No. B59840C0120A070
Subtotal (1 unit)
$2.80(exc. GST)
$2.80/unit
In Stock
TDK, HighE Varistor 1.6 nF 300 A, Clamping 1240 V, Varistor 750 V
  • RS Stock No. 291-3526
  • Mfr. Part No. B72240B0461K001
Subtotal (1 unit)
$56.10(exc. GST)
$56.10/unit
In Stock
TDK, Standard Metal Oxide Varistor 1.85 nF 100 A, Clamping 2970 V, Varistor 205 V, Radial
  • RS Stock No. 204-2191
  • Mfr. Part No. B72220S0131K101
Subtotal (1 pack of 5 units)
$5.16(exc. GST)
$1.032/unit
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