Overview
The Allen-Bradley 1492-SP2B050 is a two-pole supplementary protector built on the proven 1492-SP platform. Designed for equipment protection in industrial and commercial applications, this Type C circuit breaker features a 50A current rating and delivers reliable overcurrent protection in control panels and machinery. The Type C trip curve provides magnetic trip activation at 5–10 times rated current, making it suitable for circuits with moderate inrush currents.
Key Features
- Current-limiting design reduces fault energy and protects downstream equipment
- Fast-break performance minimizes circuit disturbance and arc energy
- Dual terminals accept either two wires or wire with bus bar for flexible panel layout
- 40°C calibration temperature eliminates need to derate for high-density industrial control panels
- Superior vibration and shock resistance prevents nuisance tripping in harsh environments
- Reversible line/load connections simplify installation and troubleshooting
Technical Specifications
- Poles: 2-pole (simultaneous handle operation)
- Trip Curve: Type C
- Rated Current: 50A
- Terminal Size: Accepts #16–4 AWG (1.5–25 mm²) copper wire
- Calibration Temperature: 40°C per UL/CSA
- Reference Temperature (Thermal): 30°C
- Termination: Screw terminal (standard)
Typical Applications
- Machine tool control circuits
- Industrial automation panel protection
- Motor control and branch circuit protection
- Equipment protection in commercial HVAC and refrigeration systems
- OEM equipment protection in manufacturing environments
Compatibility & Replacements
Compatible With
- Allen-Bradley 1492-SP supplementary protector series
- Standard industrial control panel installations
- Circuits requiring Type C trip curve protection
- Equipment rated for UL 1077 and CSA C22.2 No. 235 protection devices
Replaces / Drop-In Replacement For
- Verify exact compatibility with original equipment documentation before replacement
- Commonly replaces similar two-pole, 50A Type C supplementary protectors from competing manufacturers (confirm before ordering)
Works With
- All UL 1077 and CSA C22.2 No. 235 compliant equipment
- IEC/EN 60898 and IEC 60947-2 rated systems
- Standard industrial control panels and enclosures
- Auxiliary contact accessories (bottom-mounted, DIN-rail compatible)
