DC rolling stock circuit breaker DCBreak. Image credit: ABB
ABB increases its market coverage in metro and light rail applications primarily operating at 1500 V with a new version of its high-speed bi-directional direct current (DC) circuit breaker. The 1500 V DCBreak design adopts many features from the existing 750 V version, such as a small footprint, reduced weight and ease of maintenance. The DCBreak is a ‘plug and play’ solution for simple replacement of the majority of circuit breakers currently available on the market, both for installation in the undercarriage as well as overhead, without the need for specific adaption.
The use of cadmium-free contacts allows the new product to be RoHS compliant, while remaining on par with the lightest comparable circuit breakers on the market.
With the extended DCBreak range, ABB has confirmed its willingness to provide to the rolling stock industry first-class products that are fully type-tested according to the latest IEC 60077-3 and IEC 61373 standards, with ratings that meet customer requirements.
The optional protective metallic enclosure is fit for operation in highly aggressive and polluted environments. The design prevents severe damage in case of shock and risk of hazardous voltages on its external surfaces, while offering multiple customization possibilities with regards to fixing points, glanding plates, low-voltage plugs or paint colors.
