SP4401 – Nidec Control Techniques Unidrive SP AC/Servo Drive, 50HP, Size 4, In Stock
Buy the Nidec Control Techniques SP4401, a Unidrive SP AC/servo drive, Size 4, 50 HP, three-phase 460 VAC, 68A max. continuous output (Normal Duty). In stock and available for fast shipping. Get a quote today.
Key Technical Specifications
- Product Type: AC variable speed/servo drive, Unidrive SP series
- Part Number: SP4401
- Manufacturer: Nidec Control Techniques
- Frame Size: 4 (Size 4)
- Power Rating (Normal Duty): 50 HP, 68 A max. continuous
- Power Rating (Heavy Duty): 50 HP, 60 A max. continuous
- Input Voltage: 3-phase, 460 VAC (380-480VAC range)
- Weight: 66.1 lb
- Dimensions: 21.5 x 12.2 x 11.7 in.
- Braking Resistor Group (SP4401-SP4402): Min. 11 Ω, 55.3 kW instantaneous power
- Control Modes: Open loop V/F or vector, RFC sensorless, closed loop vector, Servo, Regen
- Product Status: Discontinued by manufacturer (Unidrive SP series declared obsolete)
Design and Performance
Robust, Versatile Motor Control for Demanding Applications
As part of the renowned Unidrive SP series, the SP4401 offers a reliable and efficient means of controlling motor operations in environments requiring precise speed, torque, and position control, ideal for industries needing consistent, accurate, and energy-efficient motor control.
Obsolete Platform Still Widely Supported for Maintenance
Nidec has officially declared the entire Unidrive SP series obsolete, but the SP4401 remains actively sourced new, refurbished, and via repair-exchange programs for maintenance and like-for-like replacement, avoiding the complications of a full drive system retrofit.
Flexible Upgrade Path Without Extensive System Modification
This flexibility is particularly beneficial for industries looking to upgrade their motor control systems without extensive modifications to their existing setups, simplifying like-for-like replacement in established production lines.
Shared Braking Resistor Group with SP4402
Rated for a minimum 11 Ω braking resistor with 55.3 kW instantaneous power capability (shared with the higher-power SP4402), this drive simplifies braking resistor sourcing and standardization across the SP440x sub-range.
Consistent Platform Across the Unidrive SP Range
Sharing the same flexible control interface and software parameters as other Unidrive SP sizes (from the compact SP0202 up through SP6402), the SP4401 lets engineers standardize commissioning knowledge across projects using multiple drive frame sizes.
Why Buy the SP4401 From Us
- In stock and ready for immediate dispatch
- Fast shipping on every order
- Commercial advisory support to help you confirm compatibility with your motor application and braking resistor sizing, or explore modern replacement options if you’re upgrading away from this obsolete platform
- Competitive pricing — get a quote in minutes
