2P DC Mini Circuit Breaker with Transfer Switch, 6kA 440V, Size 25A Product overview This 2pole DC mini circuit breaker combines overcurrent protection with an integrated transfer switch function to enable smooth transition between main and backup power sources. It is a compact, nonsmart device designed for DC power circuits and available in multiple current ratings including the 25A model. Key benefits Continuous operation: automatically switches to backup power during outages and reverts to main power when restored, minimizing downtime for critical loads. Reliable protection: 6kA breaking capacity at 440V provides robust interruption capability for DC circuits. Long service life: enhanced conductive contacts and durable construction improve conductivity and reduce wear for extended product lifespan. Safe materials: flameretardant, temperature resistant housing and insulation support stable performance under demanding conditions. Easy integration: compact mini size is designed for straightforward installation in distribution boxes to save space and simplify wiring. Important attributes Type: Mini 2pole DC MCB with transfer switch Rated breaking capacity: 6kA Rated voltage: 440V DC Size shown: 25A model (other available ratings listed below) Available current ratings: 3A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A Device type: Nonsmart concern chemicals: None Materials: flameretardant and temperature resistant insulation; enhanced conductive components for improved durability Typical applications and scenarios Urban lighting systems: maintain street lighting operation by switching to battery backup or alternate feed during mains interruptions to avoid dark periods. Commercial buildings and malls: protect and maintain emergency circuits, signage, and critical lighting by transferring loads to backup supplies automatically. Airports and transport hubs: ensure continuity for selected DCpowered systems and emergency lighting during power transitions. Why choose this unit This mini 2pole DC circuit breaker with transfer switch is designed for installations that require reliable DC interruption and automatic source transfer in a compact footprint. Its range of current ratings allows selection for small control circuits up to larger DC distribution loads. The combination of breaking capacity, durable conductive parts, and flameretardant materials makes it suitable for demanding indoor distribution environments. Installation notes Designed for easy mounting and wiring in distribution boxes and control panels. Select the appropriate current rating for the intended load and follow standard electrical installation practices for DC circuits. This product delivers dependable DC overcurrent protection plus automatic transfer switching in a compact, durable package suitable for urban lighting, commercial installations, and transport facilities.