Product Description

The Phoenix Contact STEP-PS/1AC/12DC/1 is a compact and efficient industrial power supply unit designed for converting single-phase AC or DC input to a stable 12 V DC output. It is particularly suitable for applications in building automation, machine automation, and process control environments.

Technical Specifications

• Input Voltage Range: 85 to 264 V AC and 95 to 250 V DC
• AC Frequency Range: 45 Hz to 65 Hz
• Nominal Output Voltage: 12 V DC
• Output Current: 1 Ampere (-25°C to +55°C); 1.1 Amperes (-25°C to +40°C, permanent); 1.8 Amperes (maximum)
• Output Power: 12 Watts
• Efficiency: Greater than 83% (for 230 V AC and nominal values)
• Voltage Isolation: 4 kV AC (type test)
• Operating Temperature: -25°C to +70°C (with derating above 55°C)
• Mounting: DIN rail NS 35 (EN 60715) or screw mounting on a flat surface
• Degree of Protection: IP20
• Dimensions (W x H x D): 18 mm x 90 mm x 61 mm
• Weight: Approximately 0.07 kg
• Safety Certifications: UL Recognized, cUL Recognized, UL Listed, cUL Listed, IECEE CB Scheme; compliant with UL 1310 NEC Class 2
• Features:
• High Reliability:
• Mean Time Between Failures (MTBF) exceeding 1,478,000 hours
• Long mains buffering times (>15 ms at 120 V AC; >90 ms at 230 V AC)
• Energy Efficiency:
• High efficiency with low standby losses, contributing to energy savings
• Flexible Installation:
• Can be mounted on DIN rail or directly onto a flat surface
• Parallel and Series Connections:
• Supports parallel connections for redundancy and increased capacity
• Supports series connections
• Comprehensive Protection:
• Protection against overvoltage at the output (OVP) below 25 V DC
• Control deviation less than 1% (change in load, static 10% to 90%)
• Residual ripple below 20 mV peak-to-peak (20 MHz)