Product Overview

This series of Star-Delta (Y-△) reduced voltage starter control panels is engineered for three-phase 380V AC three-wire circuits. Through time-controlled transition between star and delta winding configurations it enables soft starting of asynchronous motors reducing inrush current to 1/3 of direct-on starting values. This mitigates electrical stress on motors and power grids. Integrated with thermal overload protection current/voltage monitoring and certified components (standard or CHNT brand) the panels suit 11-55kW high-power motors widely applied in starting and protecting industrial equipment such as fans pumps and compressors.

Normal Working Conditions

ü Temperature: -5°C to +40°C (24-hour average ≤ +35°C)

ü Altitude: ≤ 2000m above sea level

ü Humidity: ≤ 50% at +40°C; up to 90% at 20°C (condensation prevention required)

ü Mounting: Vertical installation with ≤ ±5° inclination; vibration-free environment

Selection Guide

ü Power Matching Principle
For inductive loads (e.g. motors) specify one size up:

15kW motor → select 18.5kW panel

18.5kW motor → select 22kW panel

ü Series Recommendations

SJ-L Series: Intelligent integrated protection for high-reliability applications (comprehensive motor safeguards)

SJ-Z1 Series: CHNT-branded components with current/voltage monitoring and intelligent protection

SJ-Z2 Series: Cost-optimized CHNT solution (without meters ideal for budget projects)

Compliance & Warranty

ü Electrical Safety: CE certified compliant with IEC 60947-4-1

ü Warranty: 12-month manufacturer’s warranty

Customization Services

Designed to meet diverse project requirements, our customization options ensure optimal integration with global supply chains and application environments:

ü Alternative Component Brands
Optional substitution with internationally recognized brands including Siemens, Schneider, ABB, or Eaton components, ensuring compatibility with preferred vendor specifications and regional compliance.

ü Explosion-Proof Enclosure Upgrade
ATEX Zone 2 certified explosion-proof enclosures (compliant with IEC 60079-0/15 standards), ideal for hazardous environments such as petrochemical plants, gas stations, or explosive dust zones.

ü High-Power Expansion Solutions
Customizable systems for ≥37kW motors, including heavy-duty three-phase configurations and high-voltage adaptations , suitable for industrial pumps, large machine tools, or commercial HVAC systems with high-load requirements.

Core Component Configuration Table

AC380V ( 3-phase)

With integrated protector (featuring overload, short-circuit, phase loss (open phase), under/over voltage, locked rotor, earth leakage (ground fault, overheat protection, etc.), current and voltage meters. Standard electrical components are used.