Phoenix STEP-PS/ 1AC/12DC/1 Power Supply
The Phoenix STEP-PS/ 1AC/12DC/1 Power Supply (Item No: 2868538 ) offers a 85 V AC ... 264 V AC input voltage range, > 83 % (for 230 V AC and nominal values) efficiency, 12 V DC nominal output voltage, 1 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/12DC/1 |
Phoenix STEP-PS/ 1AC/12DC/1 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 |
| Efficiency | > 83 % (for 230 V AC and nominal values) |
| Nominal output voltage | 12 V DC |
| Nominal output current (IN) | 1 A (-25 °C ... 55 °C) |
| Residual ripple | < 20 mVPP (20 MHz) |
| Power loss nominal load max. | < 2.8 W |
| Insulation voltage input/output | 3.75 kV AC (routine 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 Power Supply STEP-PS/1AC/12DC/1 (Item No: 2868538) is engineered to meet the essential requirements of compact industrial panels and embedded control systems. It supports a wide input voltage range of 85 V AC to 264 V AC with a nominal rating of 100 V AC to 240 V AC, making it highly versatile across global power standards. The unit delivers a consistent 12 V DC output at 1 A, with excellent stability ensured by a residual ripple of less than 20 mVPP (20 MHz). Its efficiency exceeds 83% under nominal 230 V AC conditions, minimizing energy waste and heat generation. With an inrush current of less than 15 A and power loss below 2.8 W, this power supply balances compact design with energy-efficient performance. For safety, the device features a 3.75 kV AC insulation voltage between input and output and is compliant with EN 61000-6-1 and EN 61000-6-3 EMC standards, ensuring immunity from electrical noise and low emissions in sensitive environments.
Built for DIN rail mounting and protected with an IP20-rated enclosure, the STEP-PS/1AC/12DC/1 operates reliably in ambient temperatures from -25 °C to +70 °C, with derating above 55 °C. Its compact housing is ideal for installation in tight spaces within distribution boxes or control cabinets. Maintenance engineers value its robust voltage regulation and protection against ripple, while panel builders appreciate the straightforward integration and reduced heat load.
The Phoenix 12 V DC 1 A Step Power Supply STEP-PS/1AC/12DC/1 is commonly used in powering relays, signal transmitters, small sensors, and HMI backlights. Its low voltage DC output makes it suitable for sensitive devices that require clean, ripple-free power. In student labs and R&D environments, this model offers dependable performance for testing control logic or microcontroller-based circuits. For automation professionals seeking a compact and reliable power supply, this model offers German-engineered quality with global compatibility.
To explore more or download the datasheet, visit the official Phoenix Contact product page for STEP-PS/1AC/12DC/1. Brand: Phoenix Contact, Model: STEP-PS/1AC/12DC/1, Item No: 2868538. Secondary keywords: 12V DC DIN Rail Power Supply, Phoenix Contact Step Series, Industrial Control Power Supply 12V, Compact PSU for Automation.
