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

4198 Products showing for Surge Protection Components

1 of 210
Last RS stock
TDK Thermistor, NTC Type 5 Ω 22 mm 14.5 mm 7 mm
  • RS Stock No. 769-1886
  • Mfr. Part No. B57213P0509M301
Subtotal (1 pack of 5 units)
SGD8.14(exc. GST)
SGD1.628/unit
In Stock
Sollatek, AVS30 Surge Suppressor Unit 320V ac Maximum Voltage Rating 6.5 kA Maximum Surge Current Surge/Spike Protection
  • RS Stock No. 311-5868
  • Mfr. Part No. 91300000
Subtotal (1 unit)
SGD151.70(exc. GST)
SGD151.70/unit
In Stock
Bourns, 2095 3000 V dc 8 kA, Axial 2 Electrode Gas Discharge Tube Gas Discharge Tube
  • RS Stock No. 768-7825
  • Mfr. Part No. 2095-300-BLF
Subtotal (1 pack of 5 units)
SGD9.48(exc. GST)
SGD1.896/unit
Stocked by manufacturer
Phoenix Contact, PT-IQ-5-HF Surge Protection Plug 15V dc Maximum Voltage Rating 10 kA Maximum Surge Current Protective
  • RS Stock No. 249-9507
  • Mfr. Part No. 2800796
Subtotal (1 unit)
SGD381.18(exc. GST)
SGD381.18/unit
In Stock
Mersen, STMT23 Surge Protector 230V Maximum Voltage Rating 10 kA Maximum Surge Current Type 2+3/Class II+III
  • RS Stock No. 179-3083
  • Mfr. Part No. 83230512 / STMT23-10K320V-SP-SF
Subtotal (1 unit)
SGD111.26(exc. GST)
SGD111.26/unit
Last RS stock
TE Connectivity Thermistor, NTC Type 10 kΩ 0.305 mm 1.016 mm 1.016 mm
  • RS Stock No. 124-4258
  • Mfr. Part No. GA10K3CG3
Subtotal (1 box of 100 units)
SGD1,818.70(exc. GST)
SGD18.187/unit
Limited stock
TDK NTC Thermistor, NTC Type 100 Ω 2 mm 5.5 mm 5 mm
  • RS Stock No. 152-7135
  • Mfr. Part No. B57164K0101K000
Subtotal (1 pack of 10 units)
SGD9.60(exc. GST)
SGD0.96/unit
In Stock
Schneider Electric, EZ9L Surge Suppressor Unit 230V Maximum Voltage Rating 20 kA Maximum Surge Current Surge Arrester
  • RS Stock No. 207-219
  • Mfr. Part No. EZ9L33620
Subtotal (1 unit)
SGD107.85(exc. GST)
SGD107.85/unit
In Stock
TDK Thermistor, NTC Type 15 Ω 7 mm 15 mm 7 mm
  • RS Stock No. 216-1393
  • Mfr. Part No. B57237S0150M000
Subtotal (1 unit)
SGD1.28(exc. GST)
SGD1.28/unit
In Stock
Sollatek, Hivoltguard Surge Suppressor Unit 230V Maximum Voltage Rating 6.5 kA Maximum Surge Current Overvoltage
  • RS Stock No. 311-5880
  • Mfr. Part No. 92615000
Subtotal (1 unit)
SGD62.72(exc. GST)
SGD62.72/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)
SGD35.17(exc. GST)
SGD35.17/unit
In Stock
Allen Bradley, 100-FS Surge Suppressor Unit 280V ac Maximum Voltage Rating 97 A Maximum Surge Current Surge Suppressor
  • RS Stock No. 261-2808
  • Mfr. Part No. 100-FSC280
Subtotal (1 unit)
SGD32.14(exc. GST)
SGD32.14/unit
In Stock
TDK, Standard Metal Oxide Varistor 200 pF 25 A, Clamping 775 V, Varistor 470 V
  • RS Stock No. 289-7070
  • Mfr. Part No. B72210S0301K101
Subtotal (1 pack of 5 units)
SGD2.00(exc. GST)
SGD0.40/unit
Temporarily out of stock
Phoenix Contact, PLT-SEC Surge Protection Plug 80V ac Maximum Voltage Rating Protective Plug
  • RS Stock No. 207-2783
  • Mfr. Part No. 2907921
Subtotal (1 pack of 10 units)
SGD1,847.56(exc. GST)
SGD184.756/unit
Stocked by manufacturer
Phoenix Contact, VAL-MS-T1/T2 48/12.5/1+0-FM Surge Protection Device 250V ac Maximum Voltage Rating 30 kA Maximum Surge
  • RS Stock No. 853-0060
  • Mfr. Part No. 2801240
Subtotal (1 unit)
SGD259.00(exc. GST)
SGD259.00/unit
In Stock
Eaton, MA15 Surge Suppressor Unit 280V dc Maximum Voltage Rating 12 kA Maximum Surge Current 1 Phase
  • RS Stock No. 618-9610
  • Mfr. Part No. MA15/D/2/SI
Subtotal (1 unit)
SGD446.12(exc. GST)
SGD446.12/unit
In Stock
TDK Thermistor, NTC Type 100 kΩ 1.4 mm 0.8 mm 0.8 mm
  • RS Stock No. 769-1903
  • Mfr. Part No. B57540G1104F000
Subtotal (1 pack of 5 units)
SGD25.73(exc. GST)
SGD5.146/unit
In Stock
Bourns, DV Varistor 85 pF 5 A, Clamping 775 V, Varistor 470 V, 3225
  • RS Stock No. 204-8694
  • Mfr. Part No. DV300K3225R2
Subtotal (1 pack of 10 units)
SGD8.40(exc. GST)
SGD0.84/unit
In Stock
Dehn, DG Modular Surge Protector 275V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS Stock No. 768-1741
  • Mfr. Part No. DG M TNS 275 FM
Subtotal (1 unit)
SGD765.77(exc. GST)
SGD765.77/unit
In Stock
Honeywell Thermistor, PTC Type 1 Ω, Cylindrical Alumina 309 mm 305 mm 2.18 mm
  • RS Stock No. 293-8654
  • Mfr. Part No. HEL-707-U-0-12-00
Subtotal (1 unit)
SGD134.11(exc. GST)
SGD134.11/unit
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