Working Principle

The operating theory of an electric isolator is straightforward because it can be operated manually, semi-automatically, or entirely automatically. These are also used as switches, referred to as electrical isolator switches. Depending on the case, this switch can be raised or lowered. However, in some cases, such as transformers, electricity distribution lines, and grid stations, these are positioned in a fixed location indefinitely to ensure isolation.

Types of Isolators

Electrical isolators are categorized according to the system’s specifications, which include the following:

• Double Break Type Isolator: Three loads of post insulators make up this form of the isolator. A flat male or tubular link is kept in the central insulator, which can be made straight by a middle post insulator rotation. The bottom of the post insulator has a lever that can rotate the middle post insulator. It is connected to the isolator’s manual control (operating handle) or motorised operation (using motor) through a rotating knot rod.
• Single Break Type Isolators: Arm interaction is divided into two components in this form of the isolator. Male contact is made with the first arm contact, while female contact is made with the second arm contact. The post insulator movement, on which the arm contacts are set, causes the arm contact to move. The post insulators’ rotation stacks are reversed, causing the isolator to close by closing the arm contact.
• Pantograph Type Isolator: The pantograph style isolator allows present switchgear to be installed and takes up the least amount of space. A post insulator and an operational insulator are also included in this type of insulator.

Electrical Isolator V/s Circuit Breaker

The key distinction between an isolator and a circuit breaker is that an isolator disconnects the circuit when it is not in use. The circuit breaker, on the other hand, disconnects the path when the load is ON.

However, these two work on the same principle as disconnection, i.e., to isolate portions of an electrical circuit from the rest of the device. This will not operate in an on-load case, as any flaw in the system will cause the circuit breaker to trip regularly.

Buying Isolators Online

The flame-retardant thermoplastic switch isolator is available in single pole, double pole, triple pole, and four-pole configurations. Ampkart has always provided energy-efficient and cost-effective switchgear to ensure maximum safety and security from fault conditions. In terms of scale, price, functionality, and technology, our circuit breakers are unmatched.

The MCB may trip in such situations, such as a short circuit or a power overload, to stop the flow of current into the circuit and save the appliances, but it is still dangerous to contact the MCB because it may be charged with a large amount of static charge. Isolators come to the rescue in this situation. When the isolator is closed, any residual charge in the circuit is grounded, making the circuit safe to operate and inspect for damage.

Types of Isolators

According to Their Application:

• Three loads of post insulators make up a double break form of the isolator. A tubular touch can be made straight by a spin on the middle insulator. The middle insulator’s rotation is regulated by a lever mechanism at the bottom of the insulator; it is also linked to the isolator’s manual operation (operating handle) by a mechanical knot rod.
• The arm interaction is divided into two components in a single break type isolator. Male contact is held by the first arm contact, while female contact is held by the second arm contact. Since the insulator on which the arm contacts are fixed rotates, the arm contacts change.

The rotations of the post insulators remain in reverse, allowing it to close the isolator by closing the arm contact. Insulators counter-rotate to open the arm link, and an isolator rotates into an off position. The motor-driven isolator is typically used in an emergency, but a manually operated isolator is also available.

• The pantograph-style isolator allows for current switchgear installation and takes up the least amount of space. There are post insulators and working insulators among these insulators.
• MCB Isolator– These are used in domestic scale wiring and low-power commercial establishments to provide security. As a result, they’re perfect for use in houses, small offices, and apartment complexes. MCB isolators are available in single-pole, double-pole, triple-pole, and four-pole configurations, much like MCBs.

Application of Isolators

Isolators Can be Used in the Following Ways:

• Transformers and high-voltage circuit breakers are examples of high-voltage devices.
• To avoid reckless use, these are shielded by a protection mechanism.
• When a substation fault occurs, the isolator isolates a section of the substation.
• For maintenance and protection, they are used to de-energize a circuit/part of a circuit.

Miniature Circuit Breakers and Isolators are somewhat similar and can be easily confused. The primary distinction between the two devices is that the MCB is an automatic switch that protects against overloads and short circuits.

Isolators are manually operated switches that are used to de-energize a section of a circuit for repair or operation.

BUYING ISOLATORS AND MCB

If you are looking to buy Isolators and MCBs, then browse Ampkart. Ampkart’s vast range of electrical product range and supply will meet all of your diverse requirements in the provided industry, whether you are a residential, commercial, or industrial setup. Only best-in-class brands like Siemens, RLF, Legrand, Schneider, Philips, Halonix, Crompton, Honeywell, Gloster, Electron, and others are featured in Ampkart’s curated array of best-in-class electrical products that cover all possible realms of the electrical industry.