sq4-11p/is-sd-415v chint 11kw metal clad star-delta starter 415v ip55 with isolator

Why Choose the Chint SQ4-11P/IS-SD-415V Star-Delta Starter with Isolator?

The Chint SQ4-11P/IS-SD-415V is a robust metal clad star-delta starter with integrated isolator engineered for reliable reduced-current starting of three-phase industrial motors. Designed for demanding industrial environments, this enclosed starter reduces motor inrush current during startup while providing dependable motor protection and safe local isolation functionality.

Part of the proven Chint SQ4 motor starter series, this model combines industrial-grade construction with integrated motor control and safety features. The built-in isolator switch allows secure electrical isolation during servicing and maintenance procedures, while the IP55 enclosure helps protect internal components against dust and water ingress.

With a motor rating of 11 kW and a 415 V AC control circuit, the SQ4-11P/IS-SD-415V is suitable for pumps, compressors, conveyors, ventilation systems and industrial machinery requiring smooth reduced-voltage motor starting and reliable long-term operation.

Key Advantages

• Reliable star-delta motor starter with integrated isolator.
• 11 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 industrial environments.
• Integrated isolator improves operational safety and maintenance procedures.

Key Features

• Chint SQ4 enclosed star-delta starter series.
• 11 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: SQ4-11P/IS-SD-415V
• Product type: Star-delta starter with isolator
• Motor rating: 11 kW
• Control voltage: 415 V AC
• Starter type: Reduced-voltage star-delta starter
• Enclosure type: Metal clad
• 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 are designed to reduce motor starting current by initially connecting the motor in a star configuration before automatically switching to delta operation once the motor reaches operating speed. This helps minimise electrical stress, reduce voltage dips and improve motor longevity.

The integrated isolator on the SQ4-11P/IS-SD-415V provides an additional level of safety by enabling secure local isolation during maintenance and servicing procedures. Its durable 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.