sq4-15p-sd-240v chint 15kw metal clad star-delta starter 240v ip55

Why Choose the Chint SQ4-15P-SD-240V Star-Delta Starter?

The Chint SQ4-15P-SD-240V is a heavy-duty metal clad star-delta starter 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, minimising electrical stress and improving long-term motor performance.

Part of the dependable Chint SQ4 motor starter series, this model combines rugged industrial construction with efficient motor control functionality. The IP55-rated enclosure provides reliable protection against dust and moisture ingress, making the starter suitable for factories, workshops, process plants and industrial automation systems.

With a motor rating of 15 kW, a 240 V AC control circuit, and compatibility with Chint thermal overload relays, the SQ4-15P-SD-240V is ideal for pumps, compressors, conveyors, fans and industrial machinery requiring smooth reduced-voltage motor starting and dependable operation.

Key Advantages

• Reliable star-delta motor starter for industrial applications.
• 15 kW motor rating suitable for demanding machinery.
• 240 V AC control voltage for industrial motor systems.
• Heavy-duty metal clad enclosure for enhanced durability.
• IP55 protection rating suitable for harsh environments.
• Reduced starting current helps minimise electrical and mechanical stress.

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.
• IP55 metal clad enclosure.
• Suitable for industrial three-phase motor applications.
• Surface mounting design for industrial installations.
• Compatible with NR2-25-18 thermal overload relay.
• Robust industrial-grade construction for long service life.

Technical Specifications

• Manufacturer: Chint
• Series: SQ4 Motor Starters
• Model: SQ4-15P-SD-240V
• Product type: Star-delta starter
• Motor rating: 15 kW
• Motor full load current: 28 A
• Delta loop current: 16.2 A
• Recommended overload relay: NR2-25-18
• Control voltage: 240 V AC
• Control frequency: 50 / 60 Hz
• Starter type: Reduced-voltage star-delta starter
• Enclosure type: Metal clad steel enclosure
• Protection rating: IP55
• Mounting type: Surface mounting
• Motor supply: Three-phase AC motors

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 reduces voltage dips, minimises mechanical stress and improves the reliability of industrial motor systems.

The SQ4-15P-SD-240V is designed for industrial applications requiring dependable motor startup performance and durable enclosure protection. Its IP55 metal clad enclosure helps safeguard internal components in dusty and demanding environments while supporting long-term operational reliability.

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 are widely used across industrial motor control systems where reduced-current motor starting, durable enclosure protection and dependable long-term operation are essential.