Procurement teams shortlist STEP3-PS-1AC-5DC-3-PT-USB-A with SMPS Phoenix, Phoenixcontact Essential Ps 1Ac 24Dc 240W Ee and Selec Power Supply, aligning budget approvals, warranty terms, and multisite availability for smoother rollout across plants.
Phoenix STEP3-PS/1AC/5DC/3/PT/USB-A Power Supply
The Phoenix STEP3-PS/1AC/5DC/3/PT/USB-A Power Supply (Item No: 1335699 ) offers a 110 V DC ... 250 V DC -20 % ... +10 % input voltage range, > 81.5 % (120 V AC) efficiency, 5 V DC nominal output voltage, 3 A nominal output current. Manufactured by Phoenix under the Phoenix Power Supply category, this model belongs to the Phoenix STEP Series.
| Brand | Phoenix Contact |
| Product Type | Power Supply |
| Model Number | STEP3-PS/1AC/5DC/3/PT/USB-A |
Phoenix STEP3-PS/1AC/5DC/3/PT/USB-A Power Supply – Technical Specifications
| Specification | Value |
|---|---|
| Input voltage range | 110 V DC ... 250 V DC -20 % ... +10 % |
| Inrush current | typ. 30 A (25 °C) |
| Efficiency | > 81.5 % (120 V AC) |
| Nominal output voltage | 5 V DC |
| Nominal output current (IN) | 3 A |
| Residual ripple | typ. 80 mVPP |
| Short-circuit-proof | yes |
| Power loss nominal load max. | < 3.4 W (230 V AC) |
| Insulation voltage input/output | 4 kV AC (type test) |
| Mounting type | DIN rail or direct mounting |
| Degree of protection | IP20 |
| Ambient temperature (operation) | -10 °C ... 70 °C (Derating: > 50 °C; 2 %/K) |
| Frequency range (fN) | 50 Hz ... 60 Hz ±10 % |
Phoenix Contact delivers dependable performance with the STEP3-PS/1AC/5DC/3/PT/USB-A STEP Power Supply, Item No: 1335699. This unit is built to operate within a wide input voltage range of 110 V DC to 250 V DC, withstanding -20% to +10% tolerances to ensure global compatibility. With a high efficiency greater than 81.5% at 120 V AC, it ensures minimal power wastage even under full load. The output is a stable 5 V DC at 3 A, supported by low residual ripple (typ. 80 mVPP), ensuring reliable operation of sensitive electronics. It is also short-circuit-proof, backed by 4 kV AC insulation for safe isolation between input and output. The maximum power loss is just 3.4 W at nominal load (230 V AC), making it energy-efficient and thermally optimized. Designed for DIN rail or direct mounting, it fits cleanly into control panels with IP20 protection. It operates reliably in ambient temperatures from -10 °C to 70 °C, with derating above 50 °C at 2%/K, making it robust in a wide range of environments.
This Primary-switched STEP Power Supply is ideal for compact control cabinets, embedded systems, sensor nodes, and small PLC setups requiring consistent 5 V DC power with USB-A output compatibility. It’s particularly useful for engineers powering HMI devices, microcontrollers, USB-based sensors, and diagnostics equipment in the field. The high surge immunity and efficiency rating make it a trusted choice for both OEMs and system integrators working on space-constrained automation projects. Installation is fast, and its rugged design ensures long service life with minimal maintenance needs. The model is also valuable for technical education setups, giving engineering students hands-on access to real-world power delivery systems built to international standards.
If you're looking for a reliable, compact, and efficient USB-A 5V DC STEP Power Supply, the STEP3-PS/1AC/5DC/3/PT/USB-A (Item No: 1335699) is the ideal solution. Visit the official Phoenix Contact product page here. Secondary Keywords: USB-A Power Supply, 5V Industrial Power Supply, Phoenix STEP3 Power Supply, 1335699 DIN Rail PSU.
