Created by: Glen Zhu | Updated Date: Nov 24, 2022
Surge Protective Devices are designed to protect against transient surge conditions. Large single surge events, such as lightning, can reach hundreds of thousands of volts and can cause immediate or intermittent equipment failure.
However, lightning and utility power anomalies only account for 20% of transient surges. The remaining 80% of surge activity is produced internally.
Although these surges may be smaller in magnitude, they occur more frequently and with continuous exposure can degrade sensitive electronic equipment within the facility.
Power surges can occur for many reasons, including lightning strikes, power outages, and faulty wiring. Surge protectors work by absorbing the excess energy from a power surge and redirecting it away from the electronics.
Surge protectors are a vital tool for every person with loads of electronic items. They can help to protect devices from damage and keep them working befittingly.
While purchasing a surge protector, be sure to choose one that has a high rating for the amount of power that the devices will be using.
Here’s a list of the best surge protective devices (SPD) in 2022 for safety.
Technical data:
SPD according to IEC 61643-11 / EN 61643-11 | Class II / Type 2 |
Nominal AC Voltage (50/60Hz) Uo / Un | 230 V |
Maximum Continuous Operating Voltage (AC) Uc | 275 V |
Nominal Discharge Current (8/20 μs) In | 20 kA |
Maximum Discharge Current (8/20 μs) Imax | 40 kA |
Voltage Protection Level Up | 1,5 kV |
Approvals | TUV, UKCA |
DIN-rail AC SPD for three phase – SLP40-275/3S+1
Type 2 surge protection device SPD SLP40-275/3S+1 is characterized by an 8/20 µs lightning current waveform.
This Type 2 surge protection device SPD SLP40-275/3S+1 series is designed to be installed at the service entrance of low voltage systems or close to sensitive equipment to protect against transient overvoltages.
The most recent line of modular DC surge safety devices from Arrester Electric is compliant with IEC/EN 616143-11 and has a maximum continuous working voltage range of 75V to 1000V. This line has high-pressure sensitive resistors that respond at nanosecond speeds to control the impacts of lightning on the AC system, thanks to advanced design capabilities.
With more than 10 years of experience, you can rely on this manufacturer to provide your business with creative and affordable DC surge protector solutions. In order to protect your brand over the long term, our AC surge protection devices are additionally backed by a 5-year guarantee period that includes assistance and no-cost replacements.
Technical data:
SPD according to EN 61643-11 / IEC 61643-11 | type 2 / class II |
Max. continuous operating voltage (a.c.) [L-N] (UC) | 275 V (50 / 60 Hz) |
Nominal discharge current (8/20 µs) (In) | 20 kA |
Max. discharge current (8/20 µs) (Imax) | 40 kA |
Voltage protection level [L-N]/[N-PE] (UP) | ≤ 1.5 / ≤ 1.5 kV |
Surge voltage arrester consisting of base element with remote indicator contact and ground connectors, for mounting on NS 35/7.5, nominal voltage: 230 V AC, 3 + 1 circuit
Technical data:
Maximum continuous operating voltage UC (L-N)(L-PE) | 275 V AC |
Maximum continuous operating voltage UC (N-PE) | 260 V AC |
Nominal discharge current In (8/20) µs | 20 kA |
Max. discharge current Imax (8/20) µs | 40 kA |
Voltage protection level Up (L-N) | ≤ 1.35 kV |
Voltage protection level Up (L-PE) | ≤ 1.6 kV |
Voltage protection level Up (N-PE) | ≤ 1.5 kV |
Technical data:
SPD to EN 61643-11 / IEC 61643-11 | Type 2 / Class II |
Nominal voltage AC (50/60 Hz) | 230,00 V |
Maximum continuous voltage AC (L-N) | 280,00 V |
Maximum continuous voltage (N-PE) | 255,00 V |
Nominal discharge current (8/20 μs) [L-N] | 20,00 kA |
Nominal discharge current (8/20 μs) [N-PE] | 40,00 kA |
Maximum discharge current (8/20 μs) [L-N] | 40,00 kA |
Maximum discharge current (8/20 μs) [N-PE] | 60,00 kA |
Protection level [L-N] | 1,30 kV |
Protection level [N-PE] | 1,30 kV |
ProTec T2 offers basic protection as a Type 2 surge protective device (SPD) that comes with an extended maximum continuous operationg voltages (Uc) range that spans 75 V up to 750 V. With the Type 2 classification, ProTec T2 can be installed between boundaries Ob – 1 and higher. The varistor-based protection modules feature outstanding short-circuit currents up to 50 kARMS without using a back-up to a main fuse nominal current of 315 A. All modules are equipped with a state-of-the-art thermal disconnector and life-status greenred monitoring indicators. A unique vibration-proof locking mechanism enables secure use in and high vibration environments. Besides the visual mechanical indicator, optional remote contacts (RC) feature a three-pole remote signaling terminal, which enables remote monitoring of the operating state of the device.
Technical data:
Nominal AC Voltage (50/60Hz) Uo / Un | 240 V |
Maximum Continuous Operating Voltage (AC) (L – N) Uc | 300 V |
Maximum Continuous Operating Voltage (AC) (N – PE) Uc | 305 V |
Nominal Discharge Current (8/20 μs) (L – N) In | 20 kA |
Nominal Discharge Current (8/20 μs) (N – PE) In | 40 kA |
Maximum Discharge Current (8/20 μs) [L-N] Imax | 50 kA |
Maximum Discharge Current (8/20 μs) [N-PE] Imax | 65 kA |
Voltage Protection Level [L-N] Up | 1500 V |
Voltage Protection Level [N-PE] Up | 1500 V |
The pluggable surge protectors Type 2 DAC50, are designed to protect AC powerline at the main switchboard of the installation. These SPDs are based on high energy varistor equipped with thermal disconnector and failure indicator, to comply with standards and to provide a maximum protection efficiency, an high impulse current capability and a improved reliability. The surge protectors DAC50 are available in multipolar version and in several voltages to protect single or 3-phase networks.
Technical data:
SPD type | 2 |
Network | 230/400 V 3-phase+N |
Max. AC operating voltage Uc | 275 Vac |
Nominal discharge current In | 20 kA |
Max. discharge current Imax | 50 kA |
Total Maximum discharge current Imax Total | 50 kA |
Protection level Up L/N | 1.25 kV |
Protection level Up N/PE | 1.5 kV |
pluggable module, visual fault signalling, module locking, remote fault signalling
Technical data:
Type of SPD | T2 |
Nominal voltage Un | 230 V AC |
Maximum operating voltage L-N Uc | 275.00 V AC |
Maximum operating voltage N-PE Uc | 255.00 V AC |
Nominal discharge current (8/20 μs) L-N In | 20.00 kA |
Nominal discharge current (8/20 μs) N-PE In | 20.00 kA |
Maximum discharge current (8/20 μs) L-N Imax | 40 kA |
Maximum discharge current (8/20 μs) N-PE Imax | 40 kA |
Voltage protection level mode L-N Up | 1.35 kV |
Voltage protection level mode L-PE Up | 1.50 kV |
Voltage protection level mode N-PE Up | 1.50 kV |
Technical data:
Test class according to EN 61643-11:2012 (IEC 61643-11:2011) | T2, T3 |
Rated operating AC voltage Un | 230 V |
Maximum continuous operating voltage AC Uc | 275 V |
Maximum discharge current (8/20) Imax | 50 kA |
Nominal discharge current for class II test (8/20) In | 20 kA |
Open circuit voltage of the combination wave generator Uoc | 6 kV |
Voltage protection level at In (L/N) Up | < 1.25 kV |
Voltage protection level at In (L/PE) Up | < 1.5 kV |
Voltage protection level at In (N/PE) Up | < 1.4 kV |
Voltage protection level at Uoc (L/N) Up | < 0.85 kV |
Surge protective devices SPD type 2 protect low-voltage consumer systems against surge voltages as they are tested as SPD type 2 according to IEC 61643-11. The devices are compatible with the System pro M compact series. The SPD with “TS” are optionally equipped with a auxiliary contact.
Technical data:
Nominal AC Voltage of the System (Uo) | 230 / 400 V |
Maximum Continuous Operating Voltage (Uc) (L-PE) | 275 V |
Maximum Continuous Operating Voltage (Uc) (L-L) | 440 V |
Maximum Continuous Operating Voltage (Uc) (L-N) | 275 V |
Maximum Continuous Operating Voltage (Uc) (N-PE) | 275 V |
Discharge Current: Nominal (8/20 µs) | 20 kA |
Discharge Current: Maximum (8/20 µs) | 40 kA |
Voltage Protection Level Up | 1.5 kV |
Voltage Protection Level Up (L-N) | 1.25 kV |
Voltage Protection Level Up (N-PE) | 1.4 kV |
This Acti9 iPRD40r surge arrester protects 3P+N installations. It allows quick replacement of damaged cartridges. This Type 2 device is recommended for high risk level in incoming panel board. It offers remote reporting of the “cartridge must be changed” message. It can be turned over to allow the phase/neutral/earth cables to enter through either the top or the bottom. The associated circuit breaker Isc breaking capacity can go up to 50kA. It is compatible with TT and TN-S earthing system.
Technical data:
Surge arrester class type | Type 2 |
[Ue] rated operational voltage | 230/400 V AC (+/- 10 %) at 50/60 Hz |
[In] nominal discharge current | Common mode: 15 kA (L/PE) |
[In] nominal discharge current | Common mode: 15 kA (N/PE) |
[In] nominal discharge current | Differential mode: 15 kA (L/N) |
[Imax] maximum discharge current | Common mode: 40 kA L/PE |
[Imax] maximum discharge current | Common mode: 40 kA N/PE |
[Imax] maximum discharge current | Differential mode: 40 kA L/N |
[Uc] maximum continuous operating voltage | Common mode: 260 V N/PE |
[Uc] maximum continuous operating voltage | Common mode: 350 V L/PE |
[Uc] maximum continuous operating voltage | Differential mode: 350 V L/N |
Maximum [Up] voltage protection level | Common mode <1.4 kV type 2 N/PE |
Maximum [Up] voltage protection level | Differential mode <1.4 kV type 2 L/N |
We’ve summed up 10 surge protectors that are on the market. They are all equipped with various features, some of which are quite similar, and some are not. Hopefully this list we published can help you find the best surge protector that can best satisfy your needs. For more information, feel free to contact us anytime. It is our pleasure to provide solutions for those who are looking for a reliable and affordable way to protect their electronics.
LSP’s reliable surge protective devices are designed to meet the protection needs of installations against lightning and surges that disrupt equipment operation, cause failures, reduce their lifespan, or even destroy them.
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