sq4-11p/is-sd-240v chint 11kw metal clad star-delta starter 240v ip55 with isolator

Why Choose the Chint SQ4-11P/IS-SD-240V Star-Delta Starter with Isolator?

The Chint SQ4-11P/IS-SD-240V is a durable 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 service life.

Part of the trusted Chint SQ4 motor starter series, this model combines robust motor control functionality with a built-in isolator switch for safe maintenance isolation and improved operator protection. Its heavy-duty IP55 enclosure makes it suitable for factories, workshops, processing plants and industrial automation systems.

With a motor rating of 11 kW and a 240 V AC control circuit, the SQ4-11P/IS-SD-240V provides dependable reduced-voltage motor starting for pumps, compressors, fans, conveyors and industrial machinery requiring smooth startup performance and reliable protection.

Key Advantages

• Reliable star-delta motor starter with integrated isolator.
• 11 kW motor rating suitable for industrial machinery.
• 240 V AC control voltage for industrial motor systems.
• Heavy-duty metal clad enclosure for improved 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.
• 11 kW rated motor power.
• 240 V AC control circuit.
• Star-delta reduced-voltage motor starting.
• Integrated isolator switch for safe 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-240V
• Product type: Star-delta starter with isolator
• Motor rating: 11 kW
• Control voltage: 240 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 reduce motor starting current by initially connecting the motor windings in a star configuration before automatically switching to delta operation during normal running. This helps reduce electrical stress, voltage dips and mechanical wear during startup.

The integrated isolator on the SQ4-11P/IS-SD-240V provides an additional layer of operational safety by allowing safe local isolation during servicing or maintenance procedures. Its rugged IP55 enclosure helps protect internal components from dust and moisture ingress in demanding industrial environments.

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 safe maintenance isolation, reliable reduced-current starting and long-term durability are essential.