sq4-15p/is-sd-240v chint 15kw metal clad star-delta starter 240v ip55 with isolator

Why Choose the Chint SQ4-15P/IS-SD-240V Star-Delta Starter with Isolator?

The Chint SQ4-15P/IS-SD-240V is a heavy-duty metal clad star-delta starter with integrated isolator designed for reliable reduced-current starting of three-phase industrial motors. Engineered for demanding industrial applications, this enclosed starter helps minimise motor inrush current during startup while improving operational safety and extending motor service life.

Part of the dependable Chint SQ4 motor starter series, this model combines durable enclosure protection with integrated motor control and safe local isolation functionality. The built-in isolator switch allows secure electrical disconnection during maintenance procedures, while the IP55-rated enclosure protects internal components against dust and moisture ingress.

With a motor rating of 15 kW and a 240 V AC control circuit, the SQ4-15P/IS-SD-240V is suitable for pumps, compressors, conveyors, fans and industrial machinery requiring smooth reduced-voltage motor starting and dependable long-term operation.

Key Advantages

• Reliable star-delta motor starter with integrated isolator.
• 15 kW motor rating suitable for industrial machinery.
• 240 V AC control voltage for industrial motor systems.
• Heavy-duty metal clad enclosure for enhanced durability.
• IP55 protection rating suitable for harsh industrial environments.
• Integrated isolator improves maintenance safety and operational control.

Key Features

• Chint SQ4 enclosed star-delta starter series.
• 15 kW rated motor power.
• 240 V AC control circuit.
• Reduced-voltage star-delta motor starting.
• Integrated isolator switch for safe local disconnection.
• IP55 metal clad enclosure.
• Suitable for industrial three-phase motor applications.
• Surface mounting design for industrial installations.
• Compatible with thermal overload relay protection.

Technical Specifications

• Manufacturer: Chint
• Series: SQ4 Motor Starters
• Model: SQ4-15P/IS-SD-240V
• Product type: Star-delta starter with isolator
• Motor rating: 15 kW
• Control voltage: 240 V AC
• Starter type: Reduced-voltage star-delta starter
• Enclosure type: Metal clad steel enclosure
• Protection rating: IP55
• Integrated isolator: Yes
• Motor supply: Three-phase AC motors
• Mounting type: Surface mounting
• Frequency: 50 / 60 Hz
• Application: Industrial motor starting and protection

Reduced Current Motor Starting for Industrial Systems

Star-delta starters reduce motor starting current by initially connecting the motor windings in a star configuration before automatically switching to delta operation once the motor reaches operating speed. This helps reduce voltage dips, minimise mechanical stress and improve motor longevity in industrial motor systems.

The integrated isolator on the SQ4-15P/IS-SD-240V provides additional operational safety by allowing secure local isolation during servicing and maintenance procedures. Its durable IP55 enclosure helps ensure reliable operation in demanding industrial environments where protection against dust and moisture is essential.

Typical Applications

• Industrial pumps and compressors.
• Ventilation systems and industrial fans.
• Conveyor and material handling equipment.
• Production and processing machinery.
• Water treatment and utility systems.
• General industrial motor control applications.

Trusted by Industrial Engineers Worldwide

Chint SQ4 star-delta starters with integrated isolators are widely used across industrial motor control systems where reliable reduced-current starting, safe maintenance isolation and durable enclosure protection are essential.