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

4369 Products showing for Surge Protection Components

1 of 219
In Stock
Bourns, MOV-14D Metal Oxide Varistor 460 pF 50 A, Clamping 2970 V, Varistor 430 V, Molded Radial
  • RS Stock No. 851-8322
  • Mfr. Part No. MOV-14D431K
Subtotal (1 unit)
$0.80(exc. GST)
$0.80/unit
Currently unavailable
EPCOS, Standard Varistor 50 A, Clamping 1120 V
  • RS Stock No. 204-2179
  • Mfr. Part No. B72214S0421K101
Subtotal (1 pack of 5 units)
$4.92(exc. GST)
$0.984/unit
In Stock
Bourns, MOV-10DxxxK Metal Oxide Varistor 276 pF 25 A, Clamping 710 V, Varistor 430 V, Disc (10 mm)
  • RS Stock No. 233-0777
  • Mfr. Part No. MOV-10D431K
Subtotal (1 pack of 10 units)
$2.37(exc. GST)
$0.237/unit
In Stock
EPCOS Thermistor, NTC Type 10 kΩ 1.4 mm 0.8 mm 0.8 mm
  • RS Stock No. 769-1892
  • Mfr. Part No. B57540G1103F000
Subtotal (1 pack of 5 units)
$34.71(exc. GST)
$6.942/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
Littelfuse, LA Metal Oxide Varistor 450 pF 50 A, Clamping 2700 V, Varistor 430 V, Disc
  • RS Stock No. 800-7068
  • Mfr. Part No. V275LA20AP
Subtotal (1 pack of 10 units)
$11.11(exc. GST)
$1.111/unit
In Stock
EPCOS Thermistor, NTC Type 10 kΩ 6.5 mm 2.41 mm
  • RS Stock No. 528-8536
  • Mfr. Part No. B57861S0103J040
Subtotal (1 unit)
$2.54(exc. GST)
$2.54/unit
In Stock
EPCOS Thermistor, NTC Type 10 kΩ, DO-35 2.2 mm 71 mm 1.3 mm
  • RS Stock No. 769-1919
  • Mfr. Part No. B57550G1103F000
Subtotal (1 pack of 5 units)
$23.51(exc. GST)
$4.702/unit
In Stock
TE Connectivity Thermistor, NTC Type 10 kΩ, Glass Encapsulation 65 mm 1.5 mm
  • RS Stock No. 893-7174
  • Mfr. Part No. GAG10K3976B1
Subtotal (1 unit)
$24.71(exc. GST)
$24.71/unit
Last RS stock
EPCOS Thermistor, NTC Type 5 Ω 7 mm 15 mm 7 mm
  • RS Stock No. 216-1450
  • Mfr. Part No. B57237S0509M000
Subtotal (1 unit)
$2.08(exc. GST)
$2.08/unit
In Stock
Vishay Thermistor, NTC Type 220 kΩ 8 mm 24 mm 3 mm
  • RS Stock No. 381-441
  • Mfr. Part No. NTCLE100E3223HB0
Subtotal (1 pack of 5 units)
$5.27(exc. GST)
$1.054/unit
In Stock
BC Components Thermistor, NTC Type 9 mm 3.3 mm 3 mm
  • RS Stock No. 538-0733
  • Mfr. Part No. NTCLE100E3103JB0
Subtotal (1 pack of 5 units)
$5.70(exc. GST)
$1.14/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 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
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
EPCOS Thermistor, NTC Type 25 Ω 16 mm 11 mm 6 mm
  • RS Stock No. 467-624
  • Mfr. Part No. B57236S0250M000
Subtotal (1 unit)
$1.70(exc. GST)
$1.70/unit
In Stock
TE Connectivity NTC Thermistor, NTC Type 10 kΩ, DO-35 20 mm 5 mm
  • RS Stock No. 187-9300
  • Mfr. Part No. GA10K3435DM010
Subtotal (1 pack of 2 units)
$32.29(exc. GST)
$16.145/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
Vishay NTC Thermistor, NTC Type 10 kΩ 2.3 mm 23 mm 6.8 mm
  • RS Stock No. 819-9173
  • Mfr. Part No. NTCAIMME3C90373
Subtotal (1 unit)
$2.99(exc. GST)
$2.99/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
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