PRODUCT DESCRIPTION
SIEMENS 8UC7222-3BB20 - Miniature Circuit Breaker
This component is a SIEMENS SIRIUS series Miniature Circuit Breaker (MCB) designed for reliable overcurrent and short-circuit protection in industrial electrical installations. It integrates thermal-magnetic trip technology to safeguard conductors and connected equipment against fault conditions, ensuring operational continuity and system integrity. Primary applications include power distribution circuits, control panels, and machinery protection within industrial automation environments.
Technical Specifications:
- SERIES/FAMILY: SIRIUS
- COMPONENT TYPE: Miniature Circuit Breaker (MCB)
- ELECTRICAL SPECS:
- NOMINAL VOLTAGE: 230/400VAC (Single/Three-Phase)
- NOMINAL CURRENT: 20A
- POLES: 3-Pole
- TRIPPING CHARACTERISTIC: B-Curve (Instantaneous trip between 3 and 5 times nominal current)
- NOMINAL FREQUENCY: 50/60 Hz
- SHORT-CIRCUIT BREAKING CAPACITY: 6kA (IEC 60898-1)
- MECHANICAL/PHYSICAL:
- MODULAR WIDTH: 3 Modules (54mm)
- TERMINAL TYPE: Screw terminals
- WIRE CROSS-SECTION: Up to 25 mm² (solid), 16 mm² (stranded)
- INTERFACE/CONTROL:
- TRIP UNIT: Thermal-magnetic
- INDICATOR: ON/OFF position indicator
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (Terminals), IP40 (Enclosure, when installed)
- COOLING METHOD: Natural convection
- MOUNTING STYLE: DIN rail (EN 60715)
- OPERATING TEMPERATURE: -25 to +55 degrees Celsius
- COMPATIBILITY/APPLICATION: Industrial power distribution, control circuits, machinery protection, general load protection.