Kirkas Tech Ventures Private Limited
Kirkas Tech Ventures Private Limited
Vadheswaram, Nagercoil, Kanyakumari, Tamil Nadu
GST No. 33AAHCK0722B1Z9
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Combined SPD

Combination type SPD

SPD that incorporates both voltage switching type components and voltage limiting type components may exhibit voltage switching, voltage limiting or both voltage switching and voltage limiting behaviour depending upon the characteristics of the applied voltage.
1.2/50μs voltage impulse– a voltage impulse with a virtual front time (time to rise from 10% to 90% of the peak value) of 1.2μs and a time to half-value of 50μs; it is used for classification of the SPD class I and II.

Combination wave– the combination wave is delivered by a generator that applies a 1.2/50μs voltage impulse across an open circuit, and an 8/20 current impulse into a short circuit; the voltage, current amplitude and waveforms that are delivered to the SPD are determined by the generator and the impedance of the SPD to which the surge is applied. The ratio of peak open-circuit voltage to peak short-circuit current is 2Ω; this is defined as the fictive impedance Zf; the short-circuit current is symbolized by ISC ; the open-circuit voltage is symbolized by UOC.
Note: In practice when it comes to the arresters (class III) there are data Imax (8/20) and In (8/20) often mentioned in place of UOC because of the commercial reasons. They are always mentioned in relation to the stated voltage protection level Up (the data concerned are always derived from the tests by the standardized combined impulse with the amplitude UOC; the test is carried out by use of a hybrid generator with inside resistance 2Ω).
Sparkover voltage of a voltage switching SPD– maximum voltage value before disruptive discharge between the electrodes of the gap of a SPD; it is used for classification of the SPD class I and II by testing impulse with waveshape 1.2/50μs.
Nominal discharge current In (8/20)– the crest value of the current through the SPD having a current waveshape of 8/20; this is used for the classification of the SPD for class II test and also for preconditioning of the SPD for class I and II tests; arrester must discharge this current at least 15 times without any essential changes in its qualities.
Impulse current Iimp – it is defined by a current peak value Ipeak and the charge Q; tested according to the test sequence of the operating duty test; this is used for the classification of the SPD for class I test; arrester must safely discharge this current without any obvious damage or aberration from the temperature stability

Combined SPD / Type 1+2

Combined SPD  / Type 1+2
  • Combined SPD  / Type 1+2
  • Combined SPD  / Type 1+2
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Product Details:

Minimum Order Quantity1 Piece
Model Name/NumberRTL320-25W1-11R
StandardsIEC 61643-11
Maximum Operating Voltage320V
Usage/ApplicationSurge Protection
Poles Number1pole+N, 3 Pole+N
Discharge Current100 KA
Number Of Modules1
PhaseSingle phase
Number Of Poles1P+N, 3P+N

RTEK (USA) Surge Protection Device

Based on RTEKs solid technical strength & long-term industry experience, RTEK has developed a number of lightning and surge protection products.

A surge protector (or surge suppressor or surge diverter) is a device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or shorting to ground any unwanted voltages above a safe threshold.

RTEK is the most significant manufacturer of overvoltage protection devices, with many years of experience with complex solutions of demanding technological and commercial tasks, i.e. all the way from development, through technological preparation to realization, sale, application consulting and service.

The production program is focused on the overvoltage protection devices of class I, II and III, according to the international standard IEC 61643-11. The above stated protection is used in installation mains of electrical networks in various activity areas. The manufacture program also includes recently developed products, particularly for the market segment of data overvoltage protection devices, which can be utilized in the area of measurement, control, regulation and automation of technological processes and in the area of communication and computer technologies.


A surge protective device (SPD) is a device for limiting transient voltages by diverting or limiting surge current and is capable of repeating these functions as specified.

DIN Rail, combined Type 1 & 2/Class & SPD for use in a.c. system at boundaries from LPZ 0B -1 and higher.

To be installed the main incomer / Main Distribution Board where the lightning current is expected be more (If the area is of more lightning prone, then this device should be used in main panels).


l Reliable thermo disconnect device

l No follow current

l High discharge capacity

l Capable of protection terminal equipment

l Smaller size

l Visual and remote status indication

l Multifunctional terminal for connecting conductors and busbars

l DIN rail installation

Encapsulated Gap + MOV Technology

Nominal Voltage, Un = 230 V

Maximum Continous Operating Voltage, Uc = 320 V (L/N) / 260 V (N/PE)


Additional Information:

  • Production Capacity: 10000
  • Delivery Time: Ex stock
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Type 1 + 2 / Class B + C

Type 1 + 2 / Class B + C
  • Type 1 + 2 / Class B + C
  • Type 1 + 2 / Class B + C
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Product Details:

Minimum Order Quantity5 Piece
MaterialThermoplastic UL94V-0
PhaseThree phase
Model Name/NumberRTL320-25W1-31R
StandardsIEC 61643-11,EN 61643-11
Maximum Operating Voltage320 volts
No.of Poles3P+N
Usage/ApplicationSurge Protection Device
Equipment TypeN/A
Bottom SizeN/A
Bottom DiameterN/A

RTEK (USA) is an international company which provide comprehensive protection solution against lightning hazards. Our products technology and related engineering service involve in the field of lightning strike protection, surge protection and electrical grounding.
Powered by U.S. derived technology, RTEK possesses the cutting-edge surge protection technology in the world. We are the specialized manufacturer who are able to offer comprehensive surge protection solutions for Solar project, Wind power projects, Industrial solutions, etc.
Damage from electrical transients or surges, is one of the leading causes of electrical/electronic equipment failure. An electrical transient is a short duration, high-energy impulse that is imparted on the normal electrical power system whenever there is a sudden change in the electrical circuit. They can originate from a variety of sources, both internal and external to a facility. Power surges are short duration voltage and current impulses that occur continuously in electrical distribution systems. Lightning, utility activities such as load or capacity bank switching and surges from motor drivers are all examples of power surges. 
A surge protection device (SPD) is designed to divert high-current surges to ground and bypass your equipment, thereby limiting the voltage that is impressed on the equipment. The best means of protecting your electrical equipment from high-energy electrical surges is to install SPDs strategically throughout your facility. Considering that surges can originate from both internal and external sources, SPDs should be installed to provide maximum protection regardless of the source location.

DIN Rail, combined Type 1+2/Class B+C SPD for use in AC Power Supply system at boundaries from LPZ 0B -1 and higher.


 Reliable thermo disconnect device  No follow current High discharge capacity Capable of protection terminal equipment Smaller size Visual and remote status indication Multifunctional terminal for connecting conductors and busbars DIN rail installation

Additional Information:

  • Production Capacity: 5000
  • Delivery Time: Ex stock
Yes! I am Interested

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Rajakumar (General Manager)
Kirkas Tech Ventures Private Limited
Sf No 453/6b, Kavimani Nagar, Puthery, Nagercoil, Kanniyakumari, Vadheswaram, Nagercoil - 629001, Kanyakumari, Tamil Nadu, India
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