Surge protector - measur./control | Electrical material

Modern sensors, measuring devices and probes monitor and control complex and interdependent processes. Protect these operations from power surge failures. We will introduce you to different MSR surge arresters and support you in your purchase decision.

Automated processes intervene deeply in a building management system or in production processes. As a result, a very high degree of availability of the determined and transmitted measurement data and control signals is required. Surge protection devices make a significant contribution to safeguarding the function of this technology in the event of voltage peaks of all kinds. Depending on the risk potential and the level of protection required, select the surge protection devices that are right for you and combine them with other protective circuits if necessary.

Source: eibabo®, Dehn DPA-M-CLE-RJ45B-48 surge arrester Image: Dehn DPA-M-CLE-RJ45B-48 surge arrester

What are MSR surge arresters?

MSR stands for measurement technology, control technology and regulation technology. MSR technology is used in particular within modern bus systems and telecommunications systems. Private and industrial areas of application are:

air conditioning and refrigeration systems
heating systems and ventilation systems
the field of water technology and waste water technology
the electronics sector and smart home

The MSR overvoltage protection devices are used in electrical engineering to limit and divert overvoltages in electrical lines. Particularly sensitive measuring devices and control devices can be damaged by overvoltages, incorrect measurement data can be determined and incorrect control signals can be sent. But how does the overvoltage come about? Lightning strikes, short circuits, electrostatic discharges or switching operations by the network operator generate mains voltages which are well above the normal value of 230V in Germany. The consequences of such an event depend on the level and duration of the overvoltage and the speed of the voltage pulse.

The MSR surge arresters (Surge Protective Devices SPD) are usually installed directly in front of the signal inputs of the measuring devices and control devices to be protected. In the context of a three-stage overvoltage protection, these represent the so-called fine protection (type 3).

What is measurement technology, control technology and regulation technology?

MSR technology records a wide variety of situations and states within automated processes. Depending on the type and area of application, individual parameters are determined using different measurement methods. Typical measured variables are temperature, pressure, speed, humidity or chemical composition. These measured variables are converted into electrical signals such as current, voltage or resistance and serve as the basis for triggering logical actions.

How is an MSR surge protection constructed?

A general overvoltage protection is usually structured in three stages and is part of the internal lightning protection of a building. There are different requirement classes for overvoltage protection devices. We distinguish between type 1 (rough protection), type 2 (medium protection) or type 3 (fine protection). When selecting suitable protective devices, the type of possible fault and the type of device to be protected are considered. This results in a combination of different surge arresters adapted to the respective needs, which together ensure coarse, medium and fine protection.

Type 1 coarse protection devices are used to divert high lightning currents. These reduce the residual voltage of an overvoltage to a level between 6000 volts and 1300 volts. Type 1 devices are usually switched before the house installation. This means that the high lightning current cannot even reach the house distribution system.

Type 2 devices provide medium protection. They reduce the residual lightning voltage to values between 2000 volts and 600 volts. They are installed, for example, in the sub-distributors of individual apartments or parts of buildings. Medium protection devices also limit dangerous transient overvoltages. These are caused by the switching of transformers, circuit breakers, motors or inductive loads.

Already knew?

Surge arresters are not disposable fuses. The devices can ensure reliable protection over a long period of time and do not need to be replaced after they have been triggered.

The Type 3 overvoltage protection further reduces the remaining overvoltage. These devices provide fine protection and protect against voltages up to a level of 1000 volts AC or 1500 volts DC. The MSR surge arresters available in this eibabo® catalog belong to this category.

Are MSR Surge Arresters Really Necessary?

Whether special protective measures against overvoltage are required for your MSR devices must be considered individually for each installation. Estimate the risk objectively, taking into account the probability of overvoltages and overcurrents. Base this assessment on all existing parts of your protective measures against overvoltages. Include the risk of electromagnetic phenomena such as lightning discharges or earth potential rises in your considerations. Ultimately, you should achieve reliable protection for your entire system. Please consider the organizational and financial consequences that the failure of important measurement and control devices would have for your operational processes.

When should I choose an MSR surge arrester?

Power connections and data lines are an integral part of our everyday lives. Stable signal transmissions are essential for smooth business operations, and not just in industrial or commercial environments. Our high-tech lifestyle also demands reliable connectivity. If you recognize yourself in any of the following questions and answers, then MSR surge arresters are for you.

Do you value security?

Security devices such as alarm systems, door intercom systems, access controls and emergency call devices only offer complete protection if the power supply, the monitoring sensors and the data lines work permanently. MSR surge arresters protect those systems that ensure your protection.

You don't want to do without the amenities of modern living comfort?

A lot of planning, work and money goes into modern smart home installations. The automatic control of temperatures, shutters or multimedia applications enable a comfortable living environment. With MSR surge arresters, this convenience is maintained even in the event of an overvoltage.

TIP:

Investing in reliable surge protection is usually less expensive than replacing, repairing, and installing new equipment.

Would you like to secure your independence?

The production of your own electricity is becoming more important every year. Modern and environmentally friendly mobility solutions and heating systems rely on electricity from your own photovoltaic system. The efficient use and storage of electricity requires complex control devices. With an MSR surge arrester, you can protect this expensive technology from surge damage. You retain your independence from energy suppliers.

Do you want to protect investments and preserve property?

Real estate is an investment and provision in one. The technical equipment of a building has a significant influence on its value. By using MSR surge arresters, you not only get the building services, but also your old-age provision.

In our catalog you will always find the right surge arrester tailored to your requirements for your individual device variants. You get the best quality at low prices. Well-known manufacturers are ABB, Dehn, Hager, Phoenix, OBO, Kathrein, Weidmüller and many others.

Catalogue content:

In this eibabo® catalogue Earthing, lightning and surge protection > Surge protection device for data networks/MCR-technology you will find items from the following product groups: