Switching Spark Gaps

Switching spark gaps are a voltage-controlled piece of equipment used in the surge protection of electrical devices. They are used to switch circuits where you need the switch to happen fast and at a high energy, but without losing too much of that energy. They break down in the event of a voltage spike, shunting the excess voltage safely to the ground. They can operate at a wide range of temperatures.

What are switching spark gaps used for?

Switching spark gaps are often used in heating and gas appliances, both in buildings and in automotive vehicles. They can also be found in high voltage switches, in power plants and electrical substations, and large power transformers.

Types of switching spark gaps

Switching spark gaps have differing capacities for operation. This means that their voltage tolerance, peak current, maximum switching frequency and breakdown voltage can all vary, sometimes significantly. They can also differ by size, in the length and diameter of their tube.


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Description Price Breakdown Voltage Peak Current Maximum Switching Frequency Minimum Switching Operations Minimum Operating Temperature Maximum Operating Temperature Lead Length Overall Length Tube Diameter Tube Length
RS Stock No. 771-0022
Mfr. Part No.B88069X0270S102
BrandEPCOS
TWD193.80
Each (In a Pack of 5)
units
5000V 30A 100Hz 100000 0°C +100°C 60mm 60mm 0.8mm 60mm
RS Stock No. 167-0454
Mfr. Part No.B88069X0270S102
BrandEPCOS
TWD131.80
Each (In a Bag of 100)
units
5000V 30A 100Hz 100000 0°C +100°C 60mm 60mm 0.8mm 60mm
RS Stock No. 162-0261
Mfr. Part No.B88069X0680T502
BrandEPCOS
TWD55.30
Each (On a Reel of 500)
units
230V 300A 25Hz 2000000 -20°C +125°C 60mm 60mm 0.8mm 60mm
RS Stock No. 771-0026
Mfr. Part No.B88069X0680T502
BrandEPCOS
TWD119.60
Each (In a Pack of 5)
units
230V 300A 25Hz 2000000 -20°C +125°C 60mm 60mm 0.8mm 60mm
RS Stock No. 167-0455
Mfr. Part No.B88069X0260S102
BrandEPCOS
TWD109.90
Each (In a Bag of 100)
units
3000V 50A 400Hz 1000000 0°C +100°C 60mm 60mm 0.8mm 60mm
RS Stock No. 771-0029
Mfr. Part No.B88069X0260S102
BrandEPCOS
TWD183.80
Each (In a Pack of 5)
units
3000V 50A 400Hz 1000000 0°C +100°C 60mm 60mm 0.8mm 60mm