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Magnetic actuator ISM series vacuum circuit breakers offer increased reliability, reduced maintenance, and enhanced performance. With fewer moving parts, they provide superior mechanical endurance and faster operation. Energy-efficient and versatile, they are ideal for modern compact switchgear solutions.
The design features the compact vacuum interrupters with high interrupting performance and an extraordinarily long lifespan of up to 50,000 CO operations.
The use of robot welded steel discs as opposed to folded bellows eliminates the main failure point of conventional vacuum interrupter designs and maintains a high vacuum for its entire lifetime.
The close/open operations are performed by the opening and contact springs, which are parts of the magnetic actuator. The patented design of the actuator allows it to be installed directly underneath each pole. The design is optimal in terms of reliability, dimensions, weight and ease of installation.
The actuator is not dependent on the auxiliary power supply quality. The design enables both local and remote operation. It can be opened and closed with a handheld closing device operated either manually or with the AA battery pack. The trip push-button is provided to safely open the VCB in case of an emergency.
The energy for switching operations is stored in the CM16. This reduces the auxiliary power supply need to 1/10 of a conventional circuit breaker and enables significant savings on Substation UPS and auxiliary equipment.
The continuous self-supervision function monitors control switching modules, functional wiring and auxiliary power supply quiality. In the event of a malfunction, a notification will be sent to the operator and indicated by inbuilt LEDs.
The CM can be conveniently installed at a distance from the circuit breaker and connected by means of flexible leads. It significantly simplifies the installation and allows the CM to be installed in the LV compartment.