Thermal overload relay, Easy TeSys Protect,12…18A,class 10A Schneider

Technical specifications:-

• Thermal overload relay, Easy TeSys Protect,12…18A,class 10A Schneider
• Code: LRE21
• Colours: black 
• Shape: rectangular
• Material: Plastic
• Description: Thermal overload
• Theory: Thermal
  protection against: overcurrent
• Current rating of electrical current: 12-18 A
• Operating voltage rating: 180 – 440 Volts AC
• Rated frequency: 50 Hz / 60 Hz
• Protection degree: IP20
• Age: long life

How the overload device works

The overload consists of three thermal coils that are connected in series with the motor terminals. It has a designated scale to adjust the value of the overload current to the same value as the motor current. When the motor is running, it will work normally. However, when the intensity of the current drawn by the motor rises above the value the overload indicator is set to, it expands. The thermal coils, as a result, alter or change the position of the auxiliary contact points as follows:

Types of overload

• A type that connects directly to the contactor, that is, it is designed to connect directly to the contactor output terminals.
• Integrated type, i.e. its main terminals (input and output) are connected via copper connecting wires.
• A special type of protection for large-capacity motors, which protects the motor using 5/100 current transformers.
• A type of electronic boards, such as boards that protect home refrigerators from surges and drops in current.

Uses of overload

• It is used to protect electric motors.
• It is used to protect household appliances.
• Used to protect coolers.
• In general, overload is used to protect electrical loads from high current only, but it does not protect them from short circuit current.

Any control circuit must contain one or more overloads… so that all motors to be controlled are protected.

There are types of overloads (there are many types of overloads)

• Thermal overload
• Electronic Overload
• Overload digital

Each of them has a different method in terms of installation and internal configuration, but they all perform the same function. The overload is adjusted in a number of ways depending on the type of circuit, control system, and method of operating the engine.

• A special type of protection for high power motors
• An electronic type that disconnects the motor when the current increases or decreases

Explanation of electronic overload

Overload is considered one of the most important components of power boards because it protects the motor from burning due to a high current value that exceeds the value specified for the motor windings, for a specific reason such as a drop in voltage, a falling fuses, a sudden load, mechanical failure, or an overload on the motor.

The electronic overload consists of feeding points called A1 and A2, with a voltage of 220 volts AC, and there is an indicator to determine the value of the motor current.

Overload is considered one of the most important components of the power boards because it protects the motor from burning due to the high current value that exceeds the value specified for the motor windings.

This is due to a specific reason, such as a drop in voltage, a valve falling out, a sudden load, a mechanical malfunction, or an overload on the engine.

We must also know what a contactor is and what it is used for in general?

It is the heart of electrical control circuits. You cannot design an electrical control circuit without a contactor

The contactor works mainly on the magnetic effect of the electric current, so that it uses a coil through which an electric current passes, generating a magnetic field that works to attract an iron core to which the terminals of the power circuit are connected. The contactor is mainly used in operating devices and equipment that are characterized by a high voltage difference as well as a large current when operating, such as factory machines. Air conditioning equipment, lighting and heating circuits, etc

The contactor is one of the most important elements of automatic control, and it is very important. It is a box that contains contacts, that is, switches. Some of these contacts are used in the power circuit to deliver a high current, and some are designated for contacting the control circuit through which a small current passes.

The contactor consists of two pieces of iron, one fixed and the other moving. A coil is wrapped around the fixed piece. If electricity is connected to this coil, it will turn the fixed piece of iron into a magnet that attracts the moving piece. Communication is established between the two pieces, meaning the contactor keys are closed. Disconnecting the current from the coil, the contactor returns to its original position via a “spring” or otherwise known as a “spring” or “bucket” that pushes the moving piece upward again.

Therefore, it is an automatic switch through which we control the disconnection and delivery of voltage to loads that operate at high voltages (3 PHASE), such as controlling the operation of pumps, high-load machines, air conditioning devices, and motors.

Contactor installation:

The contactor installation can be divided into three parts:

1. Iron heart.
2. Basic connection points.
3. Auxiliary connection points.

It is used to control electric motors, lighting, heating, capacitors, etc.

When it comes to the safety of your home and family, trust only the best.

• We ensure that your family is protected from electrical fluctuations.
• So you can enjoy the best times in your home with peace of mind
• Best choice! There is no need to worry about the details as it is necessary to achieve a perfect result.
• Made to last and make a lasting impression.
• Widely used to control electrical circuits for automatic control.
• This series of products can be used in all conditions.

High quality products to withstand the harshest conditions and maintain all electrical appliances.

These products are highly appreciated among our clients due to their features like ease of use, unmatched quality, high durability, sturdiness, dimensional accuracy and long life.

Materials used:

• Flame resistant plastic

the design

• The variety between devices and panels is endless, thanks to the complete range able to meet all design, function and installation requirements.
• The range includes commands, sockets, outlets, protection, indicators, connectors and devices for control, security and comfort in your home.
• Ideal for flush mount solutions (for rectangular or square boxes), surface mount solutions, and for special applications.
• The result is a logical, basic and clean design where every detail expresses quality.
• The personal touch is up to you, as you can choose from a wide range of new colors and materials available.

About the product:-

• Long Service Time: High performance fire and shock resistant plastic ensuring long service time.
• Processing, environmental protection electroplating, has good torsion tolerance and anti-oxidation effect.
• Compact Size: The weight of this earth leakage circuit breaker is approx.
• Small in size and light in weight, it has reliable performance, high breaking capacity and responsive action.

High Quality and Professional: We are confident in the quality of our products and have a professional after-sales team to serve you.

Made of unbreakable, shiny, polycarbonate thermoplastic material, flexible to withstand harsh shocks and extreme force.

Modern appearance with sleek and smooth design, greatly enhances the look and feel of your room.

Flammable materials

• High temperature resistant and flame retardant plastic

Superior protection:

• It is made of very safe materials, so it is environmentally friendly
• Provides flexibility and ease of installation.

Product benefits 

• Combines simplicity of installation, flexibility and durability.
• Meets the requirements of the majority of industrial applications.
• Simple structure and easy to install.
• The classic shape has a simple look and modern feel to reflect your personality.
• The strong and durable surface gives you many years of dependable service.
• Made of high quality thermoplastic material, smooth surface, flame resistant, flexible and durable, can withstand hard impacts and heavy force, long service life.

Benefits and products

• They provide a solution for industrial applications that require high resistance to chemical agents.
• Ease and comfort of choice
• The range is available in complete modular form.
• Push-buttons and plastic modular keys
• The modular design allows flexible and simple setup of complete products
• All products are equipped with terminals
• Allowing quick and easy connection