Overview
The Airpax IEG666-1-63F-5.00-91-V is a single-pole magnetic circuit breaker from the IEG666 series manufactured by Airpax (Sensata Technologies). This breaker is engineered for reliable overcurrent protection and is widely used in industrial control panels, power distribution equipment, and OEM machinery where compact, dependable circuit protection is essential. The unit features a lever-operated toggle handle and is rated for 5A continuous current in both AC and DC applications.
Key Features
- Trip-Free Operation: Trips open on overload even if the handle is forcibly held in the ON position, ensuring fail-safe protection.
- Magnetic Trip Mechanism: Fast response to fault currents with precise trip point calibration.
- Dual Voltage/Frequency Rating: Operates at 50/60 Hz across a broad voltage range, supporting both AC and DC circuits.
- Compact Single-Pole Design: Space-efficient panel mounting for OEM applications and retrofit installations.
- Industry-Standard Configuration: Compatible with standard DIN rail and panel-mount enclosures.
Technical Specifications
The following specifications are derived from Airpax/Sensata IEG666 series documentation and field-verified configurations:
- Rated Current: 5A
- Number of Poles: 1
- Trip Type: Magnetic (instantaneous)
- Handle Type: Lever toggle
- Operating Frequency: 50/60 Hz
- Voltage Rating: Up to 250V AC/DC (per Airpax IEG series specifications)
- Mounting Style: Panel screw terminals with stud connectors
- Agency Approvals: Per IEC standards and Airpax/Sensata certification
- Dielectric Withstand: 3750VAC, 60Hz for 60 seconds between isolated terminals
Typical Applications
- Industrial control and automation panels
- Power distribution and motor control circuits
- OEM equipment protection and branch circuit isolation
- Retrofits and replacement applications in legacy machinery
- Laboratory and test equipment power management
Compatibility & Replacements
Compatible With
- Standard industrial control panel enclosures (NEMA 1, 3R, 4X)
- DIN rail and screw-mount busbar systems
- AC and DC power circuits rated up to 5A, 250V or lower
- Airpax/Sensata auxiliary switch modules (when equipped)
- IEC-compliant equipment and installations
Replaces / Drop-In Replacement For
The IEG666-1-63F-5.00-91-V is part of the Airpax IEG666 single-pole magnetic breaker family. Compatible equivalent ratings include other 5A, single-pole configurations in the IEG666 and related IAG/IUG series. Verify exact pin configuration and terminal style with your system integrator before ordering as a direct replacement.
Works With
- Airpax auxiliary switch assemblies (PGFM, relay modules)
- Standard panel-mounted indicator lamps and alarm circuits
- Industrial PLC and control system safety circuits
- Mechanical and electrical interlocking systems
- Power supply and distribution systems across 50/60 Hz utility frequencies
