Power surge protection

DACPOL offers a wide range of surge protection devices. Surge protectors have various applications: for photovoltaic protection, for vision systems, for power line protection, for Fieldbus networks, for LED protection, for RF...

DACPOL offers a wide range of surge protection devices. Surge protectors have various applications: for...

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Products that are marked "On Order" in the "Available Quantity" column are usually not in stock. Such products are available for purchase, however, due to their limited customer base, they usually have higher minimum quantities. DACPOL offers products that are not in stock for the following reasons: DACPOL currently has a large number of electronic components in stock and adds new products every day, however, tens of thousands of additional components and their various variants are available from our suppliers. Even though it is unreasonable to have all these products in stock due to the limited sales, we believe that it is in the best interest of our customers to make them available. Our goal is to inform customers about the maximum number of products available and enable them to make decisions based on specifications, prices, availability, required minimums and our technical advice. Please note that selecting the "In Stock" checkbox may limit the display to only products available for delivery straight from the shelf.
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picture_as_pdf 2 + 3 surge control (C + D) MSB10 series CITEL 2 + 3 surge control (C + D) MSB10 series SEE IT -- On Order
picture_as_pdf MA3350 - Limit switches for power lines MTL Instruments MA3350 - Limit switches for power lines SEE IT -- On Order
picture_as_pdf MA05 / 10 - Fasteners of power lines MTL Instruments MA05 / 10 - Fasteners of power lines SEE IT -- On Order
picture_as_pdf MTL CPAC - overvoltage limiter for video systems MTL Instruments MTL CPAC - overvoltage limiter for video systems SEE IT -- On Order
picture_as_pdf MTL Airguard - overvoltage stops for RF application MTL Instruments MTL Airguard - overvoltage stops for RF application SEE IT -- On Order
picture_as_pdf MTL LC30 - overvoltage limiter for weighing systems MTL Instruments MTL LC30 - overvoltage limiter for weighing systems SEE IT -- On Order
picture_as_pdf PV security boxes CITEL PV security boxes SEE IT -- On Order
picture_as_pdf Recessing limits to protect the Etitec-PV photovoltaic systems ETI Polam Recessing limits to protect the Etitec-PV photovoltaic systems SEE IT -- On Order
picture_as_pdf Recessing stops for IT devices for-12-IS CITEL Recessing stops for IT devices for-12-IS SEE IT -- On Order
picture_as_pdf Recessing stops for IT devices for-06-IS CITEL Recessing stops for IT devices for-06-IS SEE IT -- On Order
picture_as_pdf V-type cabling clamp for measuring limits KN T 1316i CITEL V-type cabling clamp for measuring limits KN T 1316i SEE IT -- On Order
picture_as_pdf DC 2 (C) DS50PVS-500 surge arresters CITEL DC 2 (C) DS50PVS-500 surge arresters SEE IT -- On Order
picture_as_pdf 3 (D) MSB6 and MSB10 surge arresters for LED protection in buildings CITEL 3 (D) MSB6 and MSB10 surge arresters for LED protection in buildings SEE IT -- On Order
picture_as_pdf 2 + 3 surge arresters (C + D) MLPX-XXX series for 1-phase installations CITEL 2 + 3 surge arresters (C + D) MLPX-XXX series for 1-phase installations SEE IT -- On Order
picture_as_pdf 2 + 3 surge arresters (C + D) MLPX-230X-X-2L series for 2-phase installations CITEL 2 + 3 surge arresters (C + D) MLPX-230X-X-2L series for 2-phase installations SEE IT -- On Order
picture_as_pdf Recessing stops with 2 + 3 type cabling (C + D) MLPX1-230L-W CITEL Recessing stops with 2 + 3 type cabling (C + D) MLPX1-230L-W SEE IT -- On Order
picture_as_pdf Recessing stops with 2 + 3 cabling (C + D) DSLP1-230L CITEL Recessing stops with 2 + 3 cabling (C + D) DSLP1-230L SEE IT -- On Order
picture_as_pdf 2 + 3 surge arresters (C + D) for LED lighting MLPC1-230L-R, MLPC1-230L-V CITEL 2 + 3 surge arresters (C + D) for LED lighting MLPC1-230L-R, MLPC1-230L-V SEE IT -- On Order
picture_as_pdf MTL MA15 - Recessing limits for Fieldbus bus MTL Instruments MTL MA15 - Recessing limits for Fieldbus bus SEE IT -- On Order
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DACPOL offers a wide range of surge protection devices. Surge protectors have various applications: for photovoltaic protection, for vision systems, for power line protection, for Fieldbus networks, for LED protection, for RF applications and for weighing systems. Our clients have known for many years that they can rely on the quality of our products. We constantly strive to make the ordering process from the semiconductors department as convenient as possible, which is why we allow orders to be placed via Internet and phone.

What is a surge protector?

A surge protector is a device designed to protect electrical equipment from overvoltage. The device limits the follow current. Overvoltages occur during lightning strikes into the power line or when switching on or off an unloaded overhead line. Overvoltages can lead to insulation damage or other component failures.

What are the main parameters of surge protectors?

- Impulse current Iimp – is a current with a 10/350 µs waveform, defined by the peak value and charge Q. Used to test type 1 surge protectors, corresponds to a lightning current
- Nominal discharge current In – is an impulse current with an 8/20 µs waveform. Used to test type 1 and type 2 surge protectors, corresponds to indirect lightning strike or switching overvoltages
- Maximum discharge current Imax – is the maximum 8/20 µs impulse current value that will not damage a type 2 surge protector
- Maximum continuous operating voltage Uc – the AC voltage value that can be permanently applied to the surge protector terminals
- Voltage protection level Up – parameter characterizing the operation of the surge protector, indicating the maximum voltage to which the overvoltage is limited
- Temporary overvoltage UT – the maximum overvoltage value which, if applied for a certain time, will not damage the surge protector
- Maximum back-up protection – the maximum fuse rating installed before the surge protector to protect against long-duration short-circuit currents.

What are the types and applications of surge protectors?

We distinguish the following types of surge protectors:

- Type 1 – protects against direct and nearby lightning strikes
- Type 2 – protects most equipment from switching overvoltages and overvoltages reduced by type 1 surge protectors
- Type 3 – protects especially sensitive/expensive electrical and electronic equipment
- Type 1+2 surge protector sets

Type 1 surge protectors are most often installed at the beginning of the installation, powered from a cable line or overhead network, e.g., in the main LV switchboard. Their task is to divert the lightning current, resulting from a direct lightning strike into the network, to the ground.

Hybrid type 1+2 surge protectors are installed before the meter, protecting it from potential overvoltages. These devices provide protection against atmospheric overvoltages caused by lightning strikes to objects near overhead lines, directly into the line, or at some distance from the surge protector installation.

Type 2 surge protectors protect the installation from potential overvoltage effects caused by atmospheric discharges or switching processes in the power network. Their task is to limit overvoltages resulting from the operation of protective devices. Used to protect motors, transformers, or welders.

Type 3 is used to protect audiovisual equipment or computers. Their purpose is to protect sensitive devices from overvoltages reduced at earlier protection stages. These devices are used when the impulse withstand capability of equipment is undefined or when the distance between the sensitive device and the last protection stage is several tens of meters.