Product Description – PULS SL20-100 DIN-Rail Power Supply

The PULS SL20-100 delivers stable 24 V DC power for modern automation systems that require consistent output under demanding operating conditions. Its compact DIN-rail design allows efficient installation in crowded control panels, while the fanless construction ensures quiet and reliable long-term operation. Moreover, its high efficiency rating reduces heat buildup, therefore extending component life in sensitive electrical environments. Engineers appreciate its responsive overload behavior because it maintains system availability during sudden load changes. In addition, the adjustable voltage range supports diverse field requirements without compromising output stability.

Technical Specifications

Input Data
• AC Input Voltage: 200–240 V AC
• Input Range (extended): 100–240 V AC, auto-select
• Input Frequency: 50/60 Hz
• Input Current: 1.5 A at 230 V AC
• Inrush Current: <30 A at 230 V AC
• Power Factor: >0.95 (active PFC)

Output Data
• Nominal Output Voltage: 24 V DC
• Adjustment Range: 24–28 V
• Output Current: 20 A at 24 V, 17.1 A at 28 V
• Output Power: 480 W
• Ripple & Noise: <100 mVpp
• Efficiency: Up to 93%
• Hold-up Time: >20 ms at 230 V AC

Protection Features
• Overload Protection: Automatic power limiting
• Short Circuit Protection: Hiccup mode
• Overvoltage Protection: Yes
• Thermal Shutdown: Yes
• Isolation: Reinforced input-output isolation

Mechanical
• Dimensions: 220 × 124 × 102 mm
• Weight: 1800 g
• Mounting: DIN-rail
• Connection: Screw terminals
• Cooling: Natural convection, no fan

Environmental / Compliance
• Operating Temperature: −25 °C to +70 °C
• Storage Temperature: −40 °C to +85 °C
• Humidity: 5–95% non-condensing
• Certifications: CE, UL508, CSA, EN60950-1, EMC compliant
• Protection Rating: IP20

FAQ

Q1: Can the SL20-100 operate reliably in high-temperature environments?
Yes, it works from −25 °C to +70 °C, although derating applies above +60 °C.

Q2: Does the power supply support global voltage standards?
Yes, the wide 100–240 V AC input range supports international installations.

Q3: Is there built-in protection for overloaded circuits?
Yes, overload, short-circuit, overvoltage, and thermal protections are included.

Q4: Can the output voltage be adjusted?
Yes, technicians can set the voltage between 24 V and 28 V depending on system needs.

Q5: Does the module include a cooling fan?
No, it uses convection cooling, which increases reliability and reduces noise.