ISOLATORS
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Isolator is a manually-operated device used to isolate / break the circuit with the power supply. They serve as perfect companion to ensure the complete de-energisation of the electrical circuits in residential buildings and business premises.
They are typically used to interrupt the power supply for repair and maintenance work. Visually they look very similar to a MCB, but technically they are different. MCB is an automatically-operated circuit breaker for overload and short circuit protection, while Isolator is a manually-operated device for simply breaking off the circuit.
Pressfit’s Isolators come with current ratings: 40A, 63A, 100A, and 125A and rated Impulse Voltage (Uimp) of 6 kV. They are manufactured adhering to the IS/IEC 60947-3 norms.
DP Isolator
TP ISOLATOR
FP ISOLATOR
EXCEPTIONAL FEATURES
IP20 Class Protection
Pressfit’s Isolators are equipped with IP20 protection, which eliminates the risk of accidental contact with the live parts. It denotes the penetration protection level against solid objects of up to 12 mm, e.g. a person’s fingers. All live parts are shrouded to avoid direct contact with the internal parts, ensuring the safety of the installers.
High-Speed Breaking Mechanism
SFT1-MCB has a high-speed breaking mechanism which employs electrodynamic forces generated by the strong current due to a short circuit. The contacts get separated much faster before they can peak, which suppresses the high current.
Better Air Circulation
When two or more poles are placed side by side, the breathing channels are contoured to allow air to circulate around each pole, resulting in cooler operations.
Energy Efficient
SFT1 Isolators comply with IS/IEC 60947-3 standards and offer lower power dissipation compared to IS / IEC benchmarks. Less power outage makes it energy efficient and saves money by lowering your electricity bills.
APPLICATION OF ISOLATOR
An isolator is devised to operate under off-load conditions when the circuit is not drawing any appreciable current from the power source. They are used to isolate part of or complete the circuit with the power source to perform maintenance work. It ensures that no current flows on the load side, even if impulse voltage appears in the circuit.
They are usually connected to the main power supply to break the circuit when needed. If an MCB is connected instead, it will trip even if one of the MCBs in the circuit trips. An isolator ensures that the power supply is not interrupted due to a malfunction in a certain part of the circuit.