sq4-15p/is-sd-415v chint 15kw metal clad star-delta starter 415v ip55 with isolator

Why Choose the Chint SQ4-15P/IS-SD-415V Star-Delta Starter with Isolator?

The Chint SQ4-15P/IS-SD-415V 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 environments, this enclosed starter helps reduce motor inrush current during startup while improving operational safety and extending motor lifespan.

Part of the trusted Chint SQ4 motor starter series, this model combines dependable motor control functionality with integrated local isolation for safer maintenance and servicing procedures. The robust IP55-rated enclosure protects internal components against dust and moisture ingress, making the unit suitable for industrial plants, workshops and automation systems.

With a motor rating of 15 kW and a 415 V AC control circuit, the SQ4-15P/IS-SD-415V is ideal for pumps, compressors, conveyors, fans and industrial machinery requiring smooth reduced-voltage motor starting and dependable long-term performance.

Key Advantages

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

Key Features

• Chint SQ4 enclosed star-delta starter series.
• 15 kW rated motor power.
• 415 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-415V
• Product type: Star-delta starter with isolator
• Motor rating: 15 kW
• Control voltage: 415 V AC
• Control frequency: 50 / 60 Hz
• Starter type: Reduced-voltage star-delta starter
• Enclosure type: Metal clad steel enclosure
• Protection rating: IP55
• Integrated isolator: Yes
• Mounting type: Surface mounting
• Motor supply: Three-phase AC motors
• Application: Industrial motor starting and protection
• Overload protection: Thermal overload relay compatible

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 minimise voltage dips, reduce mechanical stress and improve the reliability of industrial motor systems.

The integrated isolator on the SQ4-15P/IS-SD-415V provides secure local isolation during servicing and maintenance procedures, improving operational safety. Its rugged IP55 enclosure helps ensure dependable 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.