Maintenance teams planning replacements for STEP-PS-1AC-24DC-4-2 frequently review SMPS Phoenix, Phoenixcontact Essential Ps 1Ac 24Dc 240W Ee and Selec Power Supply to prevent downtime, checking availability and compatibility with existing systems.
Phoenix STEP-PS/ 1AC/24DC/4.2 Power Supply
The Phoenix STEP-PS/ 1AC/24DC/4.2 Power Supply (Item No: 2868664 ) offers a 85 V AC ... 264 V AC input voltage range, > 88 % (for 230 V AC and nominal values) efficiency, 24 V DC nominal output voltage, 4.2 A (-25 °C ... 55 °C) 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 | STEP-PS/ 1AC/24DC/4.2 |
Phoenix STEP-PS/ 1AC/24DC/4.2 Power Supply – Technical Specifications
| Specification | Value |
|---|---|
| Nominal input voltage range | 100 V AC ... 240 V AC |
| Input voltage range | 85 V AC ... 264 V AC |
| Inrush current | < 15 A (typical) |
| Efficiency | > 88 % (for 230 V AC and nominal values) |
| Nominal output voltage | 24 V DC |
| Nominal output current (IN) | 4.2 A (-25 °C ... 55 °C) |
| Residual ripple | < 40 mVPP (20 MHz) |
| Power loss nominal load max. | 13.2 W |
| Insulation voltage input/output | 4 kV AC (type test) |
| Mounting type | DIN rail mounting |
| Degree of protection | IP20 |
| Ambient temperature (operation) | -25 °C ... 70 °C (> 55° C derating : 2.5%/K) |
| EMC requirements for noise emission | EN 61000-6-3 |
| EMC requirements for noise immunity | EN 61000-6-1 |
The Phoenix STEP-PS/1AC/24DC/4.2 (Item No: 2868664) is engineered to meet the demanding requirements of modern industrial systems. It supports a wide input voltage range of 85 V AC to 264 V AC, making it suitable for global applications and varying power grid conditions. With a nominal output voltage of 24 V DC and a maximum current of 4.2 A, it offers reliable power for sensitive control equipment. Its efficiency exceeds 88% at 230 V AC, reducing energy losses and minimizing heat generation inside enclosures. The unit is short-circuit-proof and includes reinforced 4 kV AC insulation (type tested) for added electrical safety in industrial setups. A residual ripple of less than 40 mVPP ensures smooth and noise-free DC output for stable operations of sensors and controllers. Designed with DIN rail mounting and IP20 protection, this model is ideal for space-constrained control panels. Its ability to perform within -25 °C to 70 °C ambient temperature, with derating beyond 55 °C at 2.5%/K, confirms its suitability in thermally variable environments.
In real-world automation, the STEP-PS/1AC/24DC/4.2 is an excellent choice for powering HMI terminals, signal conditioners, digital relays, and small industrial computers. Junior engineers will find its plug-and-play design easy to install on DIN rails, while senior maintenance teams will appreciate the stable voltage and robust build under continuous load. The high insulation and EMC compliance (EN 61000-6-1 and EN 61000-6-3) make it dependable in noisy industrial zones. Students and educators can also study this model as an example of modern power supply design with high power density and protection features. Every feature of this Phoenix Contact STEP Power Supply is aimed at enhancing control system uptime, energy savings, and operational safety.
For detailed technical documents, refer to the official Phoenix Contact product page here: STEP-PS/1AC/24DC/4.2 – Item No: 2868664.
