Overview
The Allen-Bradley 1492-SPM1C050 is a supplementary protector miniature circuit breaker (MCB) designed for equipment protection in industrial automation and control circuits. This single pole miniature supplementary circuit breaker is rated for 5 AMPS with a C trip curve rating for medium levels of inrush current. As a current-limiting device, it provides fast breaking time and exceptional protection against fault conditions.
Key Features
- Current-limiting with dual terminals for wiring and bus bar flexibility
- Screw terminals, IP20 finger safe, and DIN rail mounted
- 40 °C (104 °F) calibration temperature suitable for extreme ambient conditions
- Excellent shock and vibration resistance to prevent nuisance tripping
- Instantaneous trip is 5 to 10 x rating of device
Technical Specifications
The 1492-SPM1C050 delivers dependable electrical protection with the following verified specifications:
- Rated for 277VAC, 48VDC
- Interrupt rating 15 kAIC
- 10 kA breaking capacity
- Standards: CCC, CE, CSA, UL
Typical Applications
The Allen-Bradley 1492-SPM1C050 is suitable for:
- Control circuit protection in PLC systems
- Industrial machine tool control cabinets
- Equipment protection in automation panels
- Inductive load circuits with moderate inrush current
- DIN rail-mounted electrical enclosures
Compatibility & Replacements
Compatible With
- Allen-Bradley control panels and enclosures
- Standard DIN rail (35mm)
- Rockwell Automation industrial control systems
- Industrial automation PLC architectures
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1492-SPM series includes multiple amperage ratings; confirm your existing breaker specifications match before replacement.
Works With
- Rockwell Studio 5000 control architectures
- Allen-Bradley CompactLogix and ControlLogix systems
- Standard industrial electrical panels
- Dual-terminal and bus bar configurations












