Overview
The Square D LE1UI1846FC is an integral self-protected motor starter designed for three-phase AC motor control. This reduced voltage soft starter combines overload protection and motor acceleration control in a compact, integrated package. Manufactured by Square D—a Schneider Electric brand—the LE1UI1846FC is engineered for industrial and commercial applications where smooth motor start-up and overload protection are essential.
Key Features
- Integral Self-Protected Design: Built-in overload protection eliminates need for separate thermal overload relays
- Reduced Voltage Soft Start: Smooth acceleration reduces mechanical stress on motors, drive systems, and load equipment
- Three-Phase Operation: Rated for 3-phase AC motors across multiple voltage classes
- Compact Form Factor: Self-contained unit simplifies installation and panel integration
- IEC Standards Compliance: Built to international electrical control standards for industrial reliability
Technical Specifications
- Part Number: LE1UI1846FC
- Manufacturer: Square D / Schneider Electric
- Product Type: Integral Self-Protected Reduced Voltage Starter
- Phase: 3-Phase AC
- Maximum Voltage Rating: 600 VAC
- Power Ratings (575 V): 15 HP
- Power Ratings (460 V): 10 HP
- Power Ratings (230 V): 5 HP
- Frequency: 60 Hz
- Certification: UL Listed, IEC Compliant
- Protection Type: Integral Overload Protection
Typical Applications
The LE1UI1846FC soft starter is ideal for:
- Centrifugal pump motors requiring smooth start-up
- HVAC systems and air handling unit motors
- Conveyor and material handling systems
- Fan and blower motor control
- Process equipment requiring reduced inrush current
- Industrial machinery where electrical and mechanical stress reduction is critical
Compatibility & Replacements
Compatible With
- Square D IEC control enclosures
- Three-phase 50/60 Hz AC motor circuits
- NEMA and IEC-rated motor starters
- Standard industrial motor control systems
- Direct-on-line (DOL) starter replacement applications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The LE1UI1846FC serves as a reduced voltage alternative to fixed full-voltage starters in soft-start applications. Consult manufacturer cross-reference documentation for specific legacy model compatibility.
Works With
- Three-phase AC motor circuits (NEMA and IEC motors)
- Standard industrial control panels and enclosures
- Soft starter control and monitoring systems
- PLC and automation control networks (with appropriate interfaces)
