Y13mm DC MCB up to 600VDC 0,5-50A

High DC voltages, like 300-600VDC, is more and more common in power distributions as a way to reduce the amount of copper in cables and busbar systems. Up to now there has been a challenge to find a MCB that in a safe way can handle such high DC voltages. Now the solution to this is the new development from CBI, the Y-series. It is a revolutionary product that is build on the same proven Hydraulic-Magnetic principle like the rest of the CBI products. Meaning that no de-rating is needed due to the ambient temperature. Y-series can handle 300VDC in one 13 mm module and for applications that require 400 or 600 VDC they can be delivered serial connected from factory and is the 2×13 mm wide. If you need to break both plus and minus in your application, the Y-frame can be delivered as a real electrical 2 pole circuit breaker. In that case up to 300 VDC is 2x13mm wide and 301-600 VDC is 2×13 +2x13mm. I.e. total width 52 mm (4×13).

Y-series in the 300VDC (and above) version has a permanent magnet to help extinguish the arc which is created inside the circuit breaker when switching a DC voltage.  In cases where the application calls for a product which is not polarity sensitive there is a range (YB) without the magnets. Then it operates with 150 VDC in one module and 300VDC with 2 modules in series.

Just as the rest of the rail mounted MCBs, Y series can be delivered in both grey version with 45 mm front escutcheon and black version with 57 mm front escutcheon.

Y-series can be delivered with factory fitted auxilliary contact.

Y series has different approval profiles depending on what the application area is:

• YA = Tele/Datacom
• YB = Alternative energy/Energy storage (unpolarized product)
• YR = Rolling stock and railway signaling
• YS = Switch version without overload protection.