Seven Star ST-1000

The Seven Star ST-1000 is a bidirectional step-up/step-down voltage transformer that converts AC power between 110-120V and 220-240V regions. Rated at 1000 W maximum capacity, it accommodates a broad range of portable electronics and small appliances across international voltage standards. The unit features a high-capacity shock-proof socket, fuse protection with spare fuses included, and an input voltage selector switch on the rear panel. Heavy-duty construction with industrial-grade cord ensures durability in varied deployment scenarios. CE and ISO certified for safety. Indoor use only.

– Technical Specifications

• Input voltage options: 110 V, 117 V, 120 V, 220 V, 230 V, 240 V AC
• Output voltage: Converts between 110-120 V AC and 220-240 V AC
• Maximum power capacity: 1000 W
• Dual-way conversion: Step-up and step-down functionality
• Dimensions: Approximately 9 × 6 × 6 inches
• Weight: 14.62 pounds (6.63 kg)
• Certifications: CE, ISO

– Key Features

• High-capacity shock-proof socket with at least one output; some models include two front outlets
• Rear-mounted input voltage selector switch for country-specific configuration
• ON/OFF power switch
• Fuse-protected circuit with two spare fuses provided
• Industrial-grade power cord
• Flat-pin adapter plug included

– Typical Applications

Suitable for appliances and portable electronics rated up to 1000 W. Recommended operational limit is 80% of maximum wattage for continuous use. Account for voltage spike multipliers of 2–5× the equipment’s rated wattage during initial startup to prevent nuisance trips.

– Compatibility & Integration

Users must verify device voltage rating and wattage consumption prior to connection. Designed for single appliance or sequential device operation rather than continuous high-demand commercial loads. The transformer bridges voltage differences between 110-120 V and 220-240 V regions, enabling operation of region-specific equipment without modification.