An isolator is used alongside a circuit breaker to provide additional safety and convenience during maintenance or servicing of electrical equipment. By using both devices, it ensures that the circuit can be completely isolated from the power supply before any work is carried out, reducing the risk of electrical shock or damage to the equipment.
A double break isolating switch is designed to interrupt the circuit at two points simultaneously when in the open position.
This ensures a reliable and secure isolation of the electrical circuit, minimizing the chances of accidental contact with live parts during maintenance or repair activities.
The primary difference between a single break isolator and a double break isolator lies in how they interrupt the electrical circuit.
A single break isolator interrupts the circuit at one point, whereas a double break isolator interrupts the circuit at two points simultaneously, providing enhanced safety and reliability.
The isolator is typically placed before the circuit breaker in an electrical system to ensure that the circuit can be isolated from the power supply before any protective devices (such as circuit breakers) are operated or serviced.
This sequence helps in preventing potential electrical hazards and ensures safe working conditions for maintenance personnel.
Generally, the isolator comes before the circuit breaker in the sequence of electrical components.
This arrangement allows for the safe isolation of the electrical circuit from the power supply before any protective or control devices (like circuit breakers) are operated or serviced, ensuring proper safety measures are followed during maintenance activities.