Overview
The Allen-Bradley 1489-M2C500 is a thermal-magnetic miniature circuit breaker designed for branch circuit protection in industrial control panels and distribution systems. This 2-pole breaker delivers reliable overcurrent and short-circuit protection with a 50-amp capacity and Type C trip characteristic, suitable for both AC and DC applications. As part of the proven Bulletin 1489-M family, it is UL 489 and CSA certified for use in the United States and Canada, with additional IEC compliance for global applications.
Key Features
- 50 Amp Rating: Handles standard industrial branch circuit loads with thermal-magnetic protection
- Type C Trip Curve: Moderate surge tolerance for inductive loads; nuisance trip resistance without compromising fault response
- Dual Voltage Support: Operates at 480Y/277VAC or 96VDC, accommodating multiple panel configurations
- 15 kAIC Interrupt Rating: Tested short-circuit withstand for typical industrial fault levels
- Accessory Compatibility: Compatible with auxiliary contacts, signal contacts, shunt trips, and lockout devices for panel flexibility
- Compact Form Factor: Space-efficient design integrates easily into existing switchgear and panel layouts
Technical Specifications
| Amperage Rating | 50 A |
| Pole Configuration | 2 Pole |
| Voltage Rating (AC) | 480Y/277 VAC |
| Voltage Rating (DC) | 96 VDC |
| Trip Type | Type C (Thermal-Magnetic) |
| Interrupt Rating | 15 kAIC |
| Protection Type | Branch Circuit Protector |
| Standards & Certifications | UL 489, CSA, CE, CCC, CUL, Taiwan BSMI, EEC |
| Bulletin | 1489-M |
| Manufacturer | Rockwell Automation / Allen-Bradley |
Typical Applications
- Machine tool and CNC equipment branch protection
- Motor control centers and distribution panels
- Industrial automation and control systems
- Process control equipment protection
- OEM panel assembly and switchgear integration
- Service upgrades and panel maintenance replacements
Compatibility & Replacements
The 1489-M2C500 is the latest generation in Rockwell’s 1489-M thermal-magnetic breaker line and maintains backward compatibility with earlier 50A 2-pole configurations in the same bulletin. It accepts standard DIN rail mounting and works with all listed 1489-M accessories (UL 508 bus bars, auxiliary contacts, signal contacts, and shunt trip modules). Used units in good condition offer cost-effective branch circuit replacement when upgrading existing panels or stocking spares for maintenance operations.
