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

4247 Products showing for Surge Protection Components

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17 of 213
Temporarily out of stock
Molex NTC Thermistor, NTC Type 10 kΩ 40 mm
  • RS Stock No. 230-2067
  • Mfr. Part No. 215272-1605
Subtotal (1 bag of 50 units)
HK$525.10
HK$10.502/unit
In Stock
ABB, OVR Surge Protection Device 275V Maximum Voltage Rating 80 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 175-2602
  • Mfr. Part No. 2CTB815708R2800 OVR T2 N 80-275s C QS
Subtotal (1 unit)
HK$2,596.90
HK$2,596.90/unit
Temporarily out of stock
Eaton, SLP Surge Suppressor Unit 18V Maximum Voltage Rating 20 kA Maximum Surge Current Signal & Data Line Protector
  • RS Stock No. 618-9761
  • Mfr. Part No. SLP16D/RS
Subtotal (1 unit)
HK$3,936.70
HK$3,936.70/unit
In Stock
L-Com, HGL Surge Suppressor Unit 65V Maximum Voltage Rating Surge Protection
  • RS Stock No. 671-784
  • Mfr. Part No. HGLN-CAT6J
Subtotal (1 unit)
HK$1,402.20
HK$1,402.20/unit
In Stock
WJ Furse, ESP-DCD1 Surge Suppressor Unit 5V dc Maximum Voltage Rating 100 kA Maximum Surge Current Combined Type 1+2+3
  • RS Stock No. 161-8366
  • Mfr. Part No. ESP DC05 D1
Subtotal (1 unit)
HK$2,862.10
HK$2,862.10/unit
In Stock
TDK, HighE Varistor 1.8 nF 300 A, Clamping 1120 V, Varistor 680 V
  • RS Stock No. 267-8273
  • Mfr. Part No. B72240B0421K001
Subtotal (1 unit)
HK$293.90
HK$293.90/unit
Temporarily out of stock
Legrand Surge Protection Device 415V Maximum Voltage Rating 20 kA Maximum Surge Current Surge Protective Device
  • RS Stock No. 255-2332
  • Mfr. Part No. 412225
Subtotal (1 unit)
HK$7,647.30
HK$7,647.30/unit
In Stock
TDK, HighE Varistor 1.4 nF 300 A, Clamping 1500 V, Varistor 910 V
  • RS Stock No. 224-2357
  • Mfr. Part No. B72240B0551K001
Subtotal (1 unit)
HK$317.40
HK$317.40/unit
In Stock
Panasonic, VF Varistor 10 A, Clamping 200 V, Varistor 120 V
  • RS Stock No. 287-450
  • Mfr. Part No. ERZVF2M121
Subtotal (1 bag of 10 units)
HK$78.90
HK$7.89/unit
Temporarily out of stock
TDK Thermistor, PTC Type 55 Ω 7.5 mm 35 mm 3.5 mm
  • RS Stock No. 212-0370
  • Mfr. Part No. B59990C0080A070
Subtotal (1 unit)
HK$5.60
HK$5.60/unit
In Stock
Wurth Elektronik, WE-VD Varistor 190 pF 25 A, Clamping 710 V, Varistor 470 V
  • RS Stock No. 760-632
  • Mfr. Part No. 820512711
Subtotal (1 tape of 20 units)
HK$94.26
HK$4.713/unit
Temporarily out of stock
Bourns, GDT230E Series 800 V 160 kA, Surface Mount Gas Discharge Tube Gas Discharge Tube
  • RS Stock No. 854-259
  • Mfr. Part No. GDT230E-80-T2-BX
Subtotal (1 box of 40 units)
HK$14,179.08
HK$354.477/unit
In Stock
Phoenix Contact, FLT Surge Arrester 255V Maximum Voltage Rating 12.5 kA Maximum Surge Current Lightning Arrester
  • RS Stock No. 870-125
  • Mfr. Part No. 1758651
Subtotal (1 unit)
HK$7,338.26
HK$7,338.26/unit
In Stock
WJ Furse, ESP D/TN Surge Suppressor Unit 7.79V Maximum Voltage Rating 20 kA Maximum Surge Current Twisted Pair Surge
  • RS Stock No. 198-0418
  • Mfr. Part No. 7TCA085400R0079 ESP 06D
Subtotal (1 unit)
HK$739.10
HK$739.10/unit
In Stock
Vishay PTC Thermistor, Positive Temperature Coefficient Type 250 Ω 20 mm 7.5 mm
  • RS Stock No. 782-881
  • Mfr. Part No. PTCEL17R251SBE
Subtotal (1 unit)
HK$21.11
HK$21.11/unit
In Stock
TDK, Standard Metal Oxide Varistor 500 pF 100 A, Clamping 2970 V, Varistor 750 V
  • RS Stock No. 289-7339
  • Mfr. Part No. B72220S0461K101
Subtotal (1 pack of 5 units)
HK$38.20
HK$7.64/unit
Temporarily out of stock
Bourns, 2051 200 V dc 2 kA, Surface 2 Electrode Arrester Gas Discharge Tube
  • RS Stock No. 733-4978
  • Mfr. Part No. 2051-20-SM-RPLF
Subtotal (1 pack of 5 units)
HK$27.80
HK$5.56/unit
In Stock
TE Connectivity Thermistor, NTC Type 100000 Ω 76 mm 2.4 mm
  • RS Stock No. 893-7124
  • Mfr. Part No. GA100K6A1B
Subtotal (1 unit)
HK$104.40
HK$104.40/unit
Temporarily out of stock
TE Connectivity Thermistor, NTC Type 100000 Ω 2.4 mm 2.4 mm
  • RS Stock No. 221-7340
  • Mfr. Part No. GA100K6A1IA
Subtotal (1 unit)
HK$95.60
HK$95.60/unit
In Stock
Vishay NTC Thermistor, Negative Temperature Coefficient Type 10000 Ω, 0603 0.8 mm 1.6 mm 0.8 mm
  • RS Stock No. 782-874
  • Mfr. Part No. NTCS0603E3103JLT
Subtotal (1 tape of 1 unit)
HK$1.68
HK$1.68/tape
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