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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

4465 Products showing for Surge Protection Components

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1 of 224
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)
£64.92(exc. VAT)
£64.92/unit
In Stock
Dehn, DV Modular Surge Protector 255V ac Maximum Voltage Rating 50 kA Maximum Surge Current Lightning Arrester
  • RS Stock No. 768-1735
  • Mfr. Part No. DV M TN 255
Subtotal (1 unit)
£804.32(exc. VAT)
£804.32/unit
In Stock
Dehn, DG Surge Protection Plug 350V dc Maximum Voltage Rating 40 kA Maximum Surge Current Surge Arrester Protection
  • RS Stock No. 768-1772
  • Mfr. Part No. DG MOD 275
Subtotal (1 unit)
£93.82(exc. VAT)
£93.82/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)
£397.28(exc. VAT)
£397.28/unit
In Stock
Dehn, DG Modular Surge Protector 275V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS Stock No. 768-1766
  • Mfr. Part No. DG M TT 2P 275
Subtotal (1 unit)
£213.16(exc. VAT)
£213.16/unit
In Stock
WJ Furse, ESP M1 Surge Suppressor Unit 280V Maximum Voltage Rating 80 kA Maximum Surge Current Mains Surge Protector
  • RS Stock No. 456-8099
  • Mfr. Part No. 7TCA085460R0115 ESP 415M1R
Subtotal (1 unit)
£1,043.48(exc. VAT)
£1,043.48/unit
Temporarily out of stock
Dehn, DSH Modular Surge Protector 255V ac Maximum Voltage Rating 50 kA Maximum Surge Current Lightning Arrester
  • RS Stock No. 786-9345
  • Mfr. Part No. DSH TNS 255
Subtotal (1 unit)
£966.18(exc. VAT)
£966.18/unit
Temporarily out of stock
Sollatek, AVS13 Surge Suppressor Unit 260V ac Maximum Voltage Rating 6.5 kA Maximum Surge Current Transient Suppression
  • RS Stock No. 311-5830
  • Mfr. Part No. AVS13
Subtotal (1 unit)
£60.83(exc. VAT)
£60.83/unit
In Stock
TDK Thermistor, NTC Type 5 Ω 16 mm 11.5 mm 6 mm
  • RS Stock No. 211-7986
  • Mfr. Part No. B57236S0509M000
Subtotal (1 unit)
£0.66(exc. VAT)
£0.66/unit
Temporarily out of stock
WJ Furse, ESP 240 Surge Protection Device 280V Maximum Voltage Rating 10 kA Maximum Surge Current Low Current Mains
  • RS Stock No. 793-3786
  • Mfr. Part No. 7TCA085460R0084 ESP 240-5A/BX
Subtotal (1 unit)
£228.68(exc. VAT)
£228.68/unit
In Stock
Dehn, BXTU Surge Arrester 180 V dc, 127V ac Maximum Voltage Rating 20 kA Maximum Surge Current Lightning Arrester
  • RS Stock No. 768-1820
  • Mfr. Part No. BXTU ML2 BD S 0-180
Subtotal (1 unit)
£285.66(exc. VAT)
£285.66/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ 6.5 mm 2.41 mm
  • RS Stock No. 528-8536
  • Mfr. Part No. B57861S0103J040
Subtotal (1 unit)
£0.98(exc. VAT)
£0.98/unit
Temporarily out of stock
WJ Furse, ESP M1 Surge Suppressor Unit 280V Maximum Voltage Rating 40 kA Maximum Surge Current Mains Surge Protector
  • RS Stock No. 788-6750
  • Mfr. Part No. 7TCA085460R0112 ESP 415M1
Subtotal (1 unit)
£987.30(exc. VAT)
£987.30/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)
£80.37(exc. VAT)
£80.37/unit
In Stock
Weidmüller, 1348 Surge Suppressor Unit 48V Maximum Voltage Rating 10 kA Maximum Surge Current Cat-6 Surge Protector
  • RS Stock No. 249-3332
  • Mfr. Part No. 1348590000
Subtotal (1 unit)
£114.62(exc. VAT)
£114.62/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)
£418.48(exc. VAT)
£418.48/unit
In Stock
ABB, OVR Surge Protection Device 275V Maximum Voltage Rating 80 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 175-2589
  • Mfr. Part No. 2CTB815710R0700 OVR T1-T2 3N 12.5-275s P TS QS
Subtotal (1 unit)
£285.64(exc. VAT)
£285.64/unit
In Stock
Eaton, SLP Surge Suppressor Unit 32V Maximum Voltage Rating 20 kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 618-9777
  • Mfr. Part No. SLP32D/RS
Subtotal (1 unit)
£221.00(exc. VAT)
£221.00/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)
£174.00(exc. VAT)
£174.00/unit
Stocked by manufacturer
ABB, OVR Surge Protection Device 400V ac Maximum Voltage Rating 40 kA Maximum Surge Current Surge Protective Devices SPD
  • RS Stock No. 231-9983
  • Mfr. Part No. 2CTB815704R2000 OVR T2 3N 40-275s P QS
Subtotal (1 unit)
£336.27(exc. VAT)
£336.27/unit
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