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YDSW15400 Lovato star delta starter with isolator 400V 15KW 20HP 28Amp
Lovato YDSW15400 star-delta motor starter with integrated isolator rated for 15 kW three-phase motors with 28 A AC3 current rating and 400 V AC control voltage for reduced-current motor starting.
£406.67
Why Choose the Lovato YDSW15400 Star Delta Starter with Isolator?
The Lovato YDSW15400 is a premium enclosed star delta starter with integrated rotary isolator designed to provide reliable reduced-voltage starting for three-phase induction motors. Manufactured by Lovato Electric, this industrial motor starter helps reduce motor inrush current during start-up, minimising electrical and mechanical stress while extending the service life of motors and connected equipment.
Designed for demanding industrial environments, the YDSW15400 features a durable IP65 insulated enclosure with integrated start and stop push-buttons together with a built-in rotary isolator for safe local isolation during servicing and maintenance. It is an ideal solution for OEMs, machine builders and industrial maintenance engineers requiring dependable motor control and enhanced operational safety.
With a rated motor capacity of 15 kW (20 HP), a 28 A AC-3 operating current and a 400 V AC control coil, the Lovato YDSW15400 delivers efficient reduced-voltage motor starting for pumps, compressors, conveyors, fans and a wide range of industrial machinery. A compatible thermal overload relay is selected separately to complete the installation.
Key Advantages
- Complete star delta starter with integrated rotary isolator.
- 15 kW (20 HP) motor capacity.
- 28 A AC-3 rated operating current.
- 400 V AC control coil.
- IP65 insulated enclosure for demanding industrial environments.
- Reduces motor starting current and mechanical stress compared with direct-on-line starting.
Key Features
- Lovato Electric L-Starter series.
- Automatic star delta reduced-voltage motor starting.
- Integrated rotary isolator.
- 15 kW (20 HP) motor rating.
- 28 A AC-3 current rating.
- 400 V AC control voltage.
- IP65 insulated enclosure with integrated start and stop controls.
- Compatible with separately selected thermal overload relays.
Reliable Reduced Voltage Motor Starting
Star delta starters reduce the current drawn during motor start-up by initially connecting the motor windings in a star configuration before automatically switching to delta operation. This controlled starting method helps reduce voltage dips, minimise mechanical shock and improve the longevity of motors and driven equipment.
The integrated rotary isolator provides a convenient means of safely disconnecting the starter during maintenance, making the Lovato YDSW15400 an excellent choice for industrial installations where reliability, safety and ease of servicing are essential.
Typical Applications
- Industrial pumps.
- Air compressors.
- Conveyor and material handling systems.
- Ventilation and extraction equipment.
- Manufacturing and processing machinery.
- General industrial motor control.
Technical Specifications
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| With Isolator | Yes | |
|---|---|---|
| Starter Type | Star Delta | |
| Power | 15 kW | |
| Current | 28 A | |
| Voltage | 400 V | |
| Phase | Three Phase | |
| IP Rating | IP65 | |
| Coil / Supply Voltage | 400 V AC | |
| Series | L-Starter YDSW Series | |
| Product type | Star-delta starter with isolator | |
| Rated motor power | 15 kW | |
| Horsepower rating | 20 HP | |
| Maximum AC3 current | 28 A | |
| Control voltage | 400 V AC | |
| Input phases | 3-phase | |
| Protection rating | IP65 enclosure | |
| Enclosure material | Insulated polycarbonate | |
| Mounting type | Surface mounting | |
| Dimensions (H × W × D) | approx. 220 × 280 × 170 mm | |
| Overload relay compatibility | RF38 series | |
| Starting method | Automatic star-delta transition | |
| Compliance | IEC/EN 60947-1, IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the Lovato YDSW15400 used for?
The YDSW15400 is a star delta starter with an integrated isolator designed to reduce the starting current of three-phase induction motors in industrial applications.
What motor size is supported?
The starter is suitable for motors rated up to 15 kW (20 HP).
What control voltage does the starter require?
The Lovato YDSW15400 operates using a 400 V AC control coil.
Does the starter include overload protection?
No. A compatible thermal overload relay must be selected separately and should be set to approximately 58% of the motor full-load current for star delta applications.
What is the benefit of the integrated isolator?
The built-in rotary isolator provides safe local isolation during maintenance, improving operator safety and simplifying servicing procedures.
Trusted for Industrial Motor Control
Lovato Electric star delta starters with integrated isolators are trusted by OEMs, panel builders and industrial maintenance engineers for dependable reduced-voltage motor starting, enhanced safety and reliable long-term operation.
