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- A-B 1489-M1C040 Miniature Circuit Breaker
  
  Product Overview
  - Brand: Allen-Bradley / Rockwell Automation
  - Model: 1489-M1C040
  - Product Type: Miniature Circuit Breaker (MCB)
  - Series: Bulletin 1489-M
  - Rated Current: 4 A
  - Poles: 1-Pole
  - Trip Curve: C
  - Protection Type: Thermal-Magnetic
  - Mounting: 35 mm DIN Rail
  Key Technical Specifications
  - Rated AC Voltage: Up to 277 VAC (UL/CSA); 230 VAC (IEC/EN)
  - Rated DC Voltage: Up to 48 VDC
  - Rated Frequency: 50/60 Hz
  - Trip Characteristic: C Curve (5–10 × rated current)
  - Interrupting Capacity: 10 kA at applicable UL/CSA ratings; ratings vary by voltage and standard
  - Protection Rating: IP20 at the front; IP00 at wire terminals
  - Electrical Life: Up to 20,000 cycles
  - Mechanical Life: Up to 20,000 cycles
  Advantages & Features
  - Compact design for industrial electrical panels
  - Thermal-magnetic overcurrent protection
  - C-curve tripping for suitable inductive loads
  - DIN-rail mounting for convenient installation
  - Current-limiting design
  - Suitable for branch-circuit protection
  Applications
  - Industrial automation systems
  - PLC and control circuits
  - Electrical control cabinets
  - Industrial machinery
  - Power distribution systems
  Important Notes
  - Verify the voltage, current rating, and interrupting capacity before installation.
  - Select the breaker according to the load and applicable electrical codes.
  - Installation should be performed by qualified personnel.