Lovato YDSW30400 star-delta motor starter with integrated isolator rated for 30 kW three-phase motors with 60 A AC3 current rating and 400 V AC control voltage for reduced-current motor starting.
£918.34
The Lovato YDSW30400 is a heavy-duty 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 reduces motor inrush current during start-up, helping minimise electrical stress on the supply network while protecting motors and driven equipment from excessive mechanical wear.
Designed for demanding industrial environments, the YDSW30400 features a durable IP65 insulated polycarbonate enclosure complete with integrated start and stop push-buttons and a built-in rotary isolator for safe local isolation during servicing and maintenance. It is ideal for OEMs, machine builders and industrial maintenance engineers requiring dependable motor control with enhanced operational safety.
With a rated motor capacity of 30 kW (40 HP), a 60 A AC-3 operating current and a 400 V AC control coil, the Lovato YDSW30400 provides dependable reduced-voltage starting for pumps, compressors, conveyors, fans and industrial process machinery. A compatible RF38 thermal overload relay is selected separately to complete the installation.
Star delta starters reduce the electrical 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 process helps reduce voltage dips, minimise mechanical shock and improve the operating life of motors, gearboxes and driven equipment.
The integrated rotary isolator provides safe local isolation during maintenance and servicing, making the Lovato YDSW30400 an ideal choice for industrial installations where safety, reliability and ease of maintenance are essential.
| Power | 30 kW |
|---|---|
| Current | 60 A |
| Voltage | 400 V |
| Phase | Three Phase |
| IP Rating | IP65 |
| Series | L-Starter YDSW Series |
| Product type | Star-delta starter with isolator |
| Rated motor power | 30 kW |
| Horsepower rating | 40 HP |
| Maximum AC3 current | 60 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 |
| Starting method | Automatic star-delta transition |
| Isolation | Integrated rotary isolator |
| Suitable frequency | 50 / 60 Hz |
| Compliance | IEC/EN 60947-1, IEC/EN 60947-4-1 |
The YDSW30400 is a star delta starter with an integrated rotary isolator designed for reduced-current starting of large three-phase induction motors in industrial applications.
The starter is suitable for motors rated up to 30 kW (40 HP).
The Lovato YDSW30400 operates using a 400 V AC control coil.
No. A compatible Lovato RF38 thermal overload relay must be selected separately and adjusted to approximately 58% of the motor full-load current for star delta applications.
The built-in rotary isolator provides safe local disconnection during servicing and maintenance, improving operator safety while simplifying maintenance procedures.
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 industrial performance.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...