Siemens Logo power Stabilized power supply, 12VDC, 1.9A Part number 6EP3321-6SB00-0AY0

Product Overview

The Siemens 6EP3321-6SB00-0AY0 is a LOGO!Power miniature DIN-rail switching power supply. It accepts a wide AC or DC input voltage (100-240 V AC or 110-300 V DC) and delivers a regulated 12 V DC output at up to 1.9 A (≈22.8 W). It is specifically designed for compact control panels, machine installations and smaller automation modules requiring a reliable low-voltage supply.

Key Features

• 12 V DC output at 1.9 A (22.8 W) for control-system and automation loads
• Wide input range: 100-240 V AC or 110-300 V DC for global compatibility
• High efficiency (~81 %) and low no-load loss making it energy-efficient
• Galvanic isolation between input and output for safety
• Soft-start behaviour with no output voltage overshoot on startup
• Standard DIN-rail mount (35 mm) and compact width (~36 mm) for space-efficient installation

Technical Specifications

• Article Number: 6EP3321-6SB00-0AY0
• Output Voltage: 12 V DC (factory set) – adjustable to ~10.5…16.1 V if required
• Output Current: Maximum 1.9 A
• Output Power: Approx. 22.8 W at full load
• Input Voltage (AC): 100 … 240 V AC (47…63 Hz)
• Input Voltage (DC): 110 … 300 V DC
• Efficiency: ~81% at full load
• Power Loss: ~5.3 W at rated output; <0.3 W no-load
• Protection / Features: Short-circuit proof, overload current limiting, internal fuse, green LED for output OK
• Operating Temperature Range: –25 °C … +70 °C (derating above +55 °C)

Compliance & Certifications

• Meets EN/IEC standards for low-voltage power supplies and SELV output
• Primary/secondary isolation tested for safe use in control panels
• Designed for industrial automation installations and DIN-rail panel mounting

Applications

The 6EP3321-6SB00-0AY0 is ideal for powering small automation modules, control relays, sensors, programmable logic controllers (e.g., LOGO! units), and compact machine-control panels. Its compact size and wide input range make it very suitable for international installations, retrofit panels or OEM modules where a stable 12 V supply is needed within constrained space.