Description
Reliance Electric 1SU41003 is a compact, high-performance AC drive from the SP500 series, engineered for precise speed and torque control of 3-phase induction motors. Rated for 3HP at 460V, this drive is widely utilized in industrial environments for its reliability and simplicity. It features a user-friendly interface and advanced programmable logic, making it an excellent choice for regulating pumps, fans, and conveyor systems. Its robust design ensures consistent performance even in challenging industrial conditions, providing essential motor protection and energy savings through optimized frequency control.

📋 Technical Specifications
- Drive Series: SP500 High-performance AC Drive.
- Power Rating: 3 Horsepower (HP).
- Input Voltage: 460VAC, 3-Phase power supply compatibility.
- Current Rating: 4.2 Amps continuous output current.
- Control Method: Sensorless Vector or V/Hz control for versatile motor performance.
- Frequency Range: Programmable output frequency (0–400 Hz) for high-speed applications.
- Interface: Integrated keypad with digital display for local parameter monitoring and adjustments.
- Protection Features: Integrated electronic motor overload (I2t), over-voltage, under-voltage, and ground fault protection.
- Communication: Optional fieldbus communication modules for centralized control system integration.
- Mounting Style: Compact, panel-mount design optimized for standard electrical cabinets.
🚀 Recommended Related Reliance/Baldor/ABB Components
Reliance Electric products are now managed under the ABB/Baldor ecosystem. If you are maintaining legacy 1SU41003 units, the following components are often requested for system support:
- Reliance SP500 Remote Keypad Kit: For external control and parameter cloning.
- Reliance/Baldor Braking Resistor: Required for applications involving rapid stops or high-inertia loads.
- AC Line Reactor (460V/3HP): Essential for reducing harmonic distortion and protecting the drive input.
- ABB ACS310 Series: The modern, recommended replacement drive for HVAC and pump applications.
- ABB ACS355 Series: The high-performance replacement for advanced machine control needs.
- EMI/RFI Filter: Designed to meet stringent electromagnetic compatibility (EMC) standards.
- SP500 Communication Module: Adapter kits for Modbus or Profibus network integration.
- DIN Rail Mounting Kit: For flexible installation in space-constrained control panels.
- Standardized Cooling Fan Kit: Replacement fan modules for maintaining optimal drive temperature.
- Signal Isolation Module: Protects the drive’s low-voltage control inputs from ground loops and surges.

