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- - Allen‑Bradley 1489-A1C100 Miniature Circuit Breaker
    
    Product Overview
    
    Single-pole miniature circuit breaker from Bulletin 1489-A series, C trip curve with 10 A rated current. It delivers overload and short-circuit protection for medium-power branch circuits inside industrial control cabinets, widely used to protect control transformers, multiple solenoid valves, small auxiliary motors and inductive control loads.
    
    Core Specifications
    
    Poles: 1-pole
    
    Rated current: 10 A
    
    Trip characteristic: C curve, suitable for inductive loads with large startup inrush current
    
    Rated operational voltage: 240 VAC / 48 VDC
    
    Short-circuit breaking capacity: 10 kA @ 240 VAC
    
    Terminals: Screw terminals, wire range 24–12 AWG copper wires
    
    Mounting: Standard 35 mm DIN rail
    
    Operating temperature: -20 ℃ ~ +60 ℃
    
    Protection type: Thermal delayed overload trip + electromagnetic instantaneous short-circuit trip
    
    Status indicator: Mechanical flag to display ON / OFF / tripped status
    
    Certifications: UL, cUL, CE certified; IP20, only for indoor cabinet installation
    
    Main Functions
    
    Thermal overload protection: Automatically disconnect power under continuous overcurrent to prevent cable overheating and insulation aging
    
    Instant short-circuit protection: Rapidly cut off circuit during short-circuit faults to avoid equipment burnout and fire hazards
    
    Manual isolation function: Serve as a disconnect switch to cut branch power for safe maintenance and wiring adjustment
    
    Protect medium-power loads including control transformers, multi-valve solenoid groups and auxiliary cooling fans
    
    Key Advantages
    
    Slim compact housing saves cabinet installation space. C curve design prevents nuisance tripping caused by high inrush current of coils and transformers during startup. Visible mechanical trip indicator accelerates on-site fault troubleshooting. Plug-in DIN rail structure enables quick replacement without rewiring. Dual thermal-magnetic protection provides comprehensive safety protection for branch circuits.
    
    Typical Applications
    
    Control transformer power branch protection, multi-solenoid valve control loops, auxiliary fan and small pump load protection, secondary distribution circuits inside automation panels, medium-power auxiliary control circuits for packaging and conveying equipment