Phoenix Contact STEP-PS/1AC/24DC/1.75 24 VDC Power Supply
A compact STEP POWER DIN-rail supply with single-phase input and a nominal 24 VDC/1.75 A output for control circuits.
Verified technical specifications, selection, installation and commissioning notes for Phoenix Contact STEP-PS/1AC/24DC/1.75, with Automation engineering and technical-service support.
Verified technical data
- Input: 100…240 VAC nominal; 85…264 VAC; 45…65 Hz; also 95…250 VDC
- Output: 24 VDC nominal; adjustable 22.5…29.5 VDC
- Nominal current: 1.75 A at -25…+55 °C; 1.9 A at -25…+40 °C continuous
- Imax: 3.75 A
- Output power: 42 W
- Efficiency: >89% at 230 VAC nominal
- Connection: Screw connection
- Mounting: NS 35 DIN rail, EN 60715
- Protection: IP20
Selection criteria
Verify 85…264 VAC or 95…250 VDC input suits the machine supply. Size continuous load below the verified output-current curve and account for >55 °C derating. Confirm 54×90×55 mm cabinet space and 30 mm top/bottom clearance. Check screw-terminal conductor sizes and upstream protection.
Installation, commissioning and maintenance
Mount on horizontal NS 35 DIN rail with official clearances. Wire only when isolated and observe input/output terminal torque. Verify input and polarity, then measure 24 VDC output under representative load. Confirm green DC OK indication and any required adjusted voltage remains within 22.5…29.5 VDC. Keep cabinet ventilation paths clear and inspect terminals during planned maintenance.
Source policy: Numeric technical claims are taken only from current official manufacturer sources. No price, stock, lead-time, warranty, distributor or partnership claim is included.
