Overview
The ABB S282UC-Z4H11 miniature circuit breaker is a compact, DIN rail-mounted protective device engineered for reliable branch circuit protection in industrial and commercial electrical systems. Part of ABB’s industry-standard S280 series, this 2-pole breaker combines thermal-magnetic trip protection with Z-curve trip characteristics, making it suitable for applications requiring protection against overloads and short circuits.
Key Features
- 2-Pole Configuration: Protects dual-phase circuits with synchronized pole operation
- Z Trip Characteristic: Sensitive trip curve ideal for semiconductor and electronic circuit protection
- Thermal-Magnetic Trip Functions: Dual protection mechanism against overloads and fault currents
- DIN Rail Mounting: Standard 35mm top-hat rail installation for quick integration into control panels
- Current Limiting: Reduces fault currents to minimize equipment damage
- Global Certifications: UL, CSA, and IEC approvals for worldwide deployment
Technical Specifications
The S282UC-Z4H11 delivers robust performance with verified ratings across DC and AC applications. All specifications conform to ABB’s S280 miniature circuit breaker family standards.
Typical Applications
- Industrial control panel branch protection
- Semiconductor equipment and automation circuits
- Electronic device overload and short-circuit protection
- Low-voltage distribution systems (DC 500V, AC applications)
- Machine tool and factory automation systems
Compatibility & Replacements
The S282UC-Z4H11 is part of ABB’s S280 series modular platform. Other variants in the S282UC-Z family use the same DIN rail footprint and trip mechanism, differing only in current ratings (0.5A through 63A). When replacing damaged breakers, verify pole count (S281UC for 1-pole, S282UC for 2-pole, S283UC for 3-pole) and trip curve (K, C, or Z) to ensure compatibility with your circuit protection scheme.
