Phoenix Contact STEP3-PS/1AC/48DC/2.5/PT Power Supply Unit 48 V DC 2.5 A 120 W Push-in DIN Rail 1285035

The STEP3-PS/1AC/48DC/2.5/PT from Phoenix Contact is a compact DIN-rail power supply that delivers a stable 48 V DC output at up to 2.5 A, making it a practical choice for industrial control panels and automation systems where reliable 48 V power is required. Its push-in connection technology simplifies wiring, while the wide input voltage range of 85 V AC to 264 V AC allows operation on standard single-phase mains supplies worldwide.

Highlights

• Nominal output voltage: 48 V DC, adjustable from 48 V DC to 56 V DC
• Output current: 2.5 A, output power: 120 W
• Wide input range: 85 V AC ... 264 V AC (nominal 100 V AC ... 240 V AC)
• Push-in connection technology for fast, tool-free wiring
• High efficiency: > 90% at 230 V AC and nominal load
• DIN rail mountable, protection class II, IP20
• Operating temperature: -25 °C ... 70 °C

In daily use

This power supply is designed for continuous operation in demanding environments. It provides overload protection with constant current characteristic and permanent short-circuit protection, ensuring the connected load is safeguarded. The residual ripple is less than 50 mV peak-to-peak, contributing to clean DC output for sensitive electronics. With an MTBF of over 1,000,000 hours at 25 °C and 230 V AC, it offers long-term reliability.

Full specifications

• Input voltage nominal: 100 V AC ... 240 V AC
• Input voltage range: 85 V AC ... 264 V AC
• Input frequency: 50 Hz / 60 Hz
• Output voltage nominal: 48 V DC
• Output voltage adjustable: 48 V DC ... 56 V DC
• Output current nominal: 2.5 A
• Output power: 120 W
• Efficiency: > 90% (at 230 V AC, nominal load)
• Mounting type: DIN rail
• Connection technology: Push-in
• Operating temperature: -25 °C ... 70 °C
• Protection class: II
• Degree of protection: IP20
• MTBF: > 1,000,000 h (at 25 °C, 230 V AC)
• Overload protection: Yes, constant current characteristic
• Short-circuit protection: Yes, permanent
• Residual ripple: < 50 mV PP
• Housing material: Polycarbonate

Final note

A reliable 48 V power supply with push-in connections and a wide input range, suitable for industrial automation and control applications.