Overview
The ABB S282UC-K3 is a compact, 2-pole miniature circuit breaker from the System pro M S280UC series, specifically engineered for DC circuit protection. This UL 1077-recognized supplemental protector combines fixed thermal and magnetic tripping mechanisms with ABB’s distinctive permanent magnet UC technology to provide current-limiting protection and arc suppression during medium and high-level faults. The DIN rail mounting design and screw terminal connections ensure straightforward installation in industrial control panels.
Key Features
- Current-Limiting UC Technology: Permanent magnet design suppresses arcs during DC faults, improving safety and reliability
- Fixed Thermal/Magnetic Trip Unit: Delayed thermal response for overload protection; electromechanical short-circuit trip for fault response
- Type K Curve: Designed to tolerate higher inrush currents from DC loads such as motors and transformers
- High DC Voltage Rating: Rated to 500VDC at 4.5 kAIC (breaking capacity), suitable for photovoltaic, telecom, and industrial DC systems
- Compact DIN Rail Mount: Space-efficient design with finger-safe screw terminals for secure connections
- Line and Load Terminals Included: Ready for direct installation without additional components
