Overview
The Allen-Bradley 1492-CB2H100 is a supplementary protector miniature molded case circuit breaker designed for overcurrent protection in industrial control equipment and appliances. This 2-pole, 10A unit operates at 480V AC with a 10kA short-circuit current rating (SCCR) and features an H-type thermal-magnetic trip mechanism for reliable fault detection and load switching.
Key Features
- 2-Pole Configuration: Simultaneous operation via connected handle for balanced phase protection
- Thermal-Magnetic Trip: H-type characteristic combines thermal sensing for overload and magnetic sensing for short circuits
- High Short-Circuit Rating: 10kA SCCR at 480V ensures robust protection against transient fault conditions
- Screw Termination: Accepts 16–4 AWG (1.5–25 mm²) copper wire on both line and load sides
- UL/CSA Certified: Meets UL 1077, CSA 22.2 No. 235, IEC/EN 60898, and IEC 60947-2 safety standards
- DIN Rail Compatible: Integrates with standard industrial panel assemblies using compatible bus bars
Technical Specifications
Designed for safe integration into equipment control panels where supplementary overcurrent protection is required per North American safety standards.
Typical Applications
- Industrial control panels and machinery electrical protection
- Motor starter supplementary overcurrent protection
- Equipment and appliance internal wiring protection
- Single-phase 480V AC systems requiring compact protective devices
- Retrofit and maintenance of legacy automation systems
Compatibility & Replacements
Compatible With
- 1492-SP series supplementary protector framework
- Standard industrial DIN-rail mounted panel assemblies
- Allen-Bradley modular accessory contacts and auxiliary modules (mounted on opposite side)
- 480V AC single-phase or 2-phase industrial systems up to 10kA fault current
- Bus bar systems rated for 1492-CB2 series circuit breakers
Replaces / Drop-In Replacement For
This unit is a specific variant of the 1492-CB2 family. Verify exact replacement compatibility with your original equipment documentation, as pole count, amperage, and voltage ratings must match precisely. The /B Series C designation in the model number indicates a specific series revision; confirm with your system integrator before installation.
Works With
- Rockwell Automation CompactLogix and ControlLogix systems (as panel-level protection)
- Third-party PLCs and drives requiring supplementary overcurrent devices
- Manual and motor-driven load switching applications
- No software/firmware interaction; purely hardware-based protection
