The Sinotimer 4P 125A automatic transfer switch ensures fast and reliable transition between the photovoltaic source and the conventional electrical grid, specially designed for three-phase + neutral applications (4 poles). It is ideal for modern photovoltaic systems, allowing continuous power supply to consumers with immediate switching between sources in case of outage or voltage drop.

Technical specifications:

• Number of poles: 4P (three-phase + neutral)
• Rated current: 125A
• Operating voltage: 220V AC
• Insulation voltage: 690V AC
• Impulse withstand voltage: 8kV
• Switching time: < 8 milliseconds
• Frequency: 50/60Hz
• Standard: IEC60947-6-1

Main features:

• Dedicated input for photovoltaic panels and inverter (PV and Inverter)
• Alternating sources: Source A solar energy / Source B public grid
• Operating modes: Automatic and Manual (rotary selector)
• LED indicators for status and active source
• Adjustable and clearly marked terminals for easy installation
• Compact and durable construction

Recommended applications:

• Residential and industrial photovoltaic systems
• Commercial buildings with on-grid or hybrid inverter
• Remote houses or standalone cabins
• UPS, backup systems, pumps, technical rooms, etc.

Main benefits:

• Extremely fast transition without visible interruption
• Protection for sensitive equipment
• Easy installation in existing panels
• Energy optimization prioritizing the solar source