The Siemens 6EP1331-1SH02 is a stabilized 24 V DC power supply engineered for industrial control and automation systems. It converts wide-range AC or DC mains input into controlled, isolated 24 V DC output at up to 1.3 A, delivering 31 W rated power. The unit mounts directly to standard DIN rail, enabling compact integration into control panels and distribution cabinets without external buffering components.
Technical Specifications
Input Characteristics
• AC input: 85–264 V, 47–63 Hz (50/60 Hz rated)
• DC input capability: 110–300 V DC
• Input current: 0.7 A @ 120 V AC; 0.35 A @ 230 V AC
• Switch-on current limiting: 15 A maximum @ +25 °C
• Mains buffering: 40 ms minimum @ rated output and Vin = 187 V
Output Characteristics
• Output voltage: 24 V DC controlled, isolated
• Adjustment range: 22.2–26.4 V DC (potentiometer-adjustable)
• Rated output current: 1.3 A (0–1.3 A range)
• Output power: 31 W
• Residual ripple: 10 mV typical, 200 mV peak-peak maximum
• Voltage spikes: 20 mV typical, 300 mV peak-peak maximum (20 MHz bandwidth)
• Static tolerance: ±3%
• Mains compensation: 0.1% typical
• Load regulation: 1.5% typical
Performance
• Efficiency: >83% at rated conditions
• Power loss: 7 W @ rated voltage and current
• Startup delay: 0.5 s maximum
• Voltage rise time: 15 ms typical
• Soft-start operation with no output overshoot
• Power reserve: 1.5× rated current for capacitive loads
– Key Features
• Green LED status indicator for output voltage OK
• Internal incoming fuse protection
• Constant-current short-circuit protection with typical 2 A current limit
• Overload protection per EN 60950-1
• Compact DIN-rail form factor
• Low no-load power dissipation
• Wide operating temperature range
– Typical Applications
LOGO! control systems, building automation, industrial PLCs, I/O modules, field sensors, and distributed control circuits requiring stable 24 V DC in continuous operation.
– Compatibility & Integration
Designed for LOGO!Power and SITOP system architectures. Operates with recommended miniature circuit breaker protection: 16 A characteristic B or 10 A characteristic C (IEC 898).
