Phoenix Contact TRIO3-PS/1AC/24DC/5 Power Supply

Technical Overview

The Phoenix Contact 1159037 TRIO3-PS/1AC/24DC/5 is a reliable, primary-switched DIN rail power supply from the TRIO3 POWER series, designed for industrial automation environments. It operates on a wide 1-phase 100-240 V AC input range, delivering a highly stable 24 V DC output (adjustable up to 28 V DC) with a 5 A nominal current capacity and 120 W of output power. Engineered into an ultra-slim 35 mm wide polycarbonate housing, this power supply minimizes control cabinet footprint. It utilizes intuitive push-in connection technology for rapid, tool-free installation. A standout capability is its dynamic boost function, which safely provides up to 7.5 A for 5 seconds to initiate heavy or inductive loads without voltage dips. Furthermore, advanced smart diagnostics with multicolor LEDs and a collective relay alarm contact ensure accurate, real-time monitoring of DC OK, overload, and short-circuit conditions.

Key Features

Primary-switched power supply delivering 24 V DC, 5 A, and 120 W of continuous power
Universal 1-phase AC input range of 100 V AC to 240 V AC for global compatibility
Tool-free, rapid wiring via front-facing Push-in connection technology
Ultra-compact 35 mm width significantly minimizes DIN rail space requirements
Smart diagnostic system utilizing multicolor LEDs and a collective alarm relay contact
Dynamic boost functionality delivers up to 7.5 A for 5 seconds to start demanding loads
Robust IP20-rated polycarbonate housing built for industrial control cabinets

Technical Specification Matrix

Parameter	Value
Input Voltage	100 V AC - 240 V AC (1-Phase)
Output Voltage	24 V DC (Adjustable 24 - 28 V DC)
Output Current	5 A
Output Power	120 W
Dynamic Boost	7.5 A (for 5 seconds)
Mounting Type	DIN Rail Mounting
Connection Method	Push-in Connection
IP Rating	IP20
Operating Temperature	-20°C to +70°C

Industrial Applications

1. Control Cabinet Power Distribution

Industrial control cabinets rely on high-efficiency power supplies to drive PLCs, HMIs, and relay networks. The ultra-slim 35mm profile of this power supply minimizes footprint on the DIN rail while continuously outputting a clean, precise 24V DC signal to keep automation hardware fully operational.

Problem Solved

Eliminates space constraints in densely packed automation panels while ensuring continuous, stable voltage delivery to critical control components.

Control CabinetPLC PowerDIN Rail Mounting24V DC DistributionSpace Optimization

2. High-Inrush Motor and Actuator Starting

Many industrial setups use motorized valves, solenoids, or small DC motors that draw aggressive current spikes upon startup. The dynamic boost function safely delivers 7.5A for 5 seconds, accommodating initial startup currents without experiencing voltage dips or tripping overload protection.

Problem Solved

Prevents power supply faults, nuisance tripping, and system resets caused by the high starting inrush current of inductive loads.

Inductive LoadsDynamic BoostMotor StartupInrush CurrentOverload Protection

3. Remote Plant Condition Monitoring

For large-scale manufacturing operations, tracking component health is paramount. Integrating the collective alarm relay contact and smart LED diagnostic outputs directly into the main supervisory control allows maintenance engineers to immediately detect power drops or short-circuit conditions.

Problem Solved

Reduces diagnostic and troubleshooting time by actively communicating power faults (like overload or DC output failure) directly to the central supervisory system.

Smart DiagnosticsAlarm Relay ContactCondition MonitoringFault DetectionSCADA Integration