The Allen-Bradley 1489-M3D050 is a 3-pole, D-curve, thermal-magnetic circuit breaker designed for reliable branch circuit protection in both industrial and commercial applications.
Key Features
- Current Rating: 5 Amperes
- Voltage Rating: Up to 480Y/277V AC (UL/CSA) and 400V AC (IEC/EN)
- Trip Curve: D-curve, suitable for highly inductive loads with inrush currents between 10 to 20 times the rated current
- Interrupting Capacity: 10 kA at 480Y/277V AC
- Mounting: DIN rail compatible for easy installation
- Certifications: UL 489 Listed, CSA Certified, CE Marked, VDE Certified, CCC Certified, RoHS Compliant
Design and Performance
Engineered to perform under extreme ambient conditions, the 1489-M3D050 features a fast breaking time and superior resistance to shock and vibration. Its thermal-magnetic mechanism ensures precise protection against both overloads and short circuits. The D-curve trip characteristic is particularly effective for circuits with high inrush currents, such as those found in motor and transformer applications.
Installation and Compatibility
This circuit breaker offers dual terminals to accommodate various wiring and busbar configurations, enhancing flexibility during installation. Reversible line and load connections further simplify the setup process. Additionally, it is compatible with a range of accessories, including auxiliary contacts, signal contacts, and shunt trips, allowing for tailored solutions to meet specific application requirements.
Applications
The 1489-M3D050 is ideal for protecting circuits in environments where high inrush currents are common, such as:
- Industrial machinery
- HVAC systems
- Pumps and compressors
- Transformers
Its robust design and comprehensive certifications make it a reliable choice for ensuring electrical safety and equipment protection.
