Overview
The Allen-Bradley 1492-CB3G030 is a Series C thermal-magnetic miniature circuit breaker engineered for reliable overcurrent protection in industrial control applications. This 3-pole, 3-amp DIN rail-mounted breaker combines thermal and magnetic trip functions to detect and interrupt both overload and fault conditions, making it suitable for protecting control circuits, solenoids, transformers, and instrumentation.
Key Features
- Thermal-Magnetic Protection: Combines thermal sensing for overload detection with magnetic trip for fast fault clearing
- IP2X Finger-Safe Design: Prevents accidental contact with live terminals, meeting safety standards for panel-mounted applications
- Energy-Limiting Technology: Reduces fault current and arc energy during short-circuit events, extending component life
- Trip-Free Mechanism: Ensures the breaker trips even if the handle is held in the ON position during a fault
- DIN Rail Mount: Snaps directly onto standard 35mm DIN rail for quick installation and replacement
- Melamine-Phenolic Body: Durable construction resists environmental stress and impact
Technical Specifications
- Part Number: 1492-CB3G030 /C
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Poles: 3
- Rated Current: 3A
- Trip Type: Thermal-Magnetic
- Mounting: DIN Rail (35mm)
- Certifications: UL 1077, CSA 22.2 No. 235, IEC/EN 60934
- Housing Material: Melamine-Phenolic
- Contact Configuration: Normal rated voltage operation
Typical Applications
- Solenoid and contactor coil protection
- Transformer and power supply circuits
- Control panel instrumentation and test equipment
- Relay and controller I/O point protection
- Industrial automation control circuits
- Automotive and medical equipment systems
Compatibility & Replacements
The 1492-CB3G030 is part of the Allen-Bradley 1492-CB Series C miniature circuit breaker family. It is compatible with standard 35mm DIN rail mounting systems common in industrial control panels. When replacing this breaker, ensure the replacement matches the 3-pole, 3-amp, Series C configuration to maintain circuit protection ratings and safety certifications. Other variants in the 1492-CB series are available with different pole configurations (1-pole, 2-pole) and current ratings (ranging from 1A to 50A) to suit varying application requirements.
