Overview
The Allen-Bradley 1492-SP2B050 is a 2-pole miniature supplementary protector designed for reliable overcurrent protection in industrial control panels, automation equipment, and electrical enclosures. This compact Type C circuit breaker provides thermal-magnetic protection with rated trip sensitivity at 5–10 times nominal current, making it ideal for applications with normal to moderate inrush currents.
Key Features
- 2-pole configuration with handle-coupled operation for simultaneous trip on both poles
- Type C thermal-magnetic tripping characteristic for balanced protection against overloads and short circuits
- Screw terminal connections accept #16–4 AWG (1.5–25 mm²) copper wire on both line and load sides
- Compact DIN-rail mount design (88 × 69 × 17.5 mm) for space-efficient panel layouts
- UL 1077, CSA C22.2 No. 235, IEC/EN 60898, and IEC 60947-2 certified for North American and international use
Technical Specifications
- Rated Current: 5 Amps
- Poles: 2
- Trip Characteristic: Type C (magnetic trip at 5–10× rated current)
- Protection Type: Thermal-magnetic
- Frequency: 50/60 Hz
- Reference Temperature: 30°C (thermal calibration)
- Terminal Type: Screw terminals
- Wire Range: #16–4 AWG (1.5–25 mm²)
- Mounting: DIN rail (35 mm standard)
- Dimensions: 88 mm (H) × 69 mm (W) × 17.5 mm (D)
- Standards: UL 1077, CSA C22.2 No. 235, IEC/EN 60898, IEC 60947-2
Typical Applications
The 1492-SP2B050 is commonly used in:
- Industrial control panels and motor starter enclosures
- PLC and drive cabinets requiring branch circuit protection
- Machinery control circuits with moderate inrush loads (lighting, solenoids, small motors)
- Power distribution modules and automation equipment
- Equipment requiring supplementary overcurrent protection per UL 1077 and IEC standards
Compatibility & Replacements
Compatible With
- DIN-rail mounted industrial control panels and enclosures
- Standard 35 mm top-hat rail systems
- Allen-Bradley bus bars and mounting accessories
- Left-, right-, and space-saving bottom-mount accessory modules
- Industrial automation systems requiring UL 1077 / CSA C22.2 No. 235 supplementary protection
Replaces / Drop-In Replacement For
Direct equivalent to other 5A, 2-pole Type C supplementary circuit breakers meeting UL 1077 and IEC 60947-2 standards. Verify model-specific compatibility with your system integrator before ordering.
Works With
- Rockwell Automation ControlLogix and CompactLogix systems
- Allen-Bradley distributed I/O and power distribution modules
- Standard industrial panel design tools and CAD systems
- EtherNet/IP and DeviceNet networked systems (as panel-level overcurrent protection)
- Industry-standard DIN-rail mounting infrastructure
