The SMA Sunny Boy SB 3300-IT, branded by Leitner, is a robust single-phase string inverter with a rated output of 3.3 kW, designed for small to mid-size residential photovoltaic systems. Built on SMA’s proven technology, this OEM version maintains the same high standards of efficiency, reliability, and grid compliance, making it a solid choice for both new installations and system upgrades.

Thanks to its IP-certified outdoor housing, the SB 3300-IT is ideal for wall-mounting in external environments, offering years of trouble-free service with minimal maintenance. It supports wide MPPT voltage ranges, ensuring flexibility for different PV configurations.

⚙️ Technical Specifications (from nameplate):

• Model: SB 3300-IT
• Max DC Voltage (VDC max): 500 V
• MPPT Voltage Range (VMPP): 200–400 V
• Max DC Current (IDC): 20 A
• Nominal AC Voltage (VAC): 230 V
• Nominal Output Power (PAC): 3300 W
• Nominal Frequency: 50 / 60 Hz
• Nominal AC Current (IAC): 14.5 A
• Power Factor (cos φ): 1
• Installation Type: Outdoor-compatible
• Certifications: DK 5940 Ed. 2.1, CE, RAL, TÜV, and others

✅ Key Features:

• High efficiency and long-term reliability
• Outdoor-rated aluminum chassis (IP protection)
• Grid-compliant for EU markets
• Ideal for rooftop PV installations up to 3.3 kW
• Original SMA internals under Leitner OEM branding

🚀 A dependable and field-proven inverter for efficient solar energy conversion in residential PV systems. Trusted SMA technology with Leitner labeling — performance you can count on.