Phoenix Contact 2904598 DIN Rail Power Supply

Full Model: QUINT4-PS/1AC/24DC/2.5/SC

QUINT4 4th-Generation QUINT POWER DIN rail switching power supply, screw connection (SC = Screw Connection)

✅ Core Electrical Specifications

Input: Single-phase AC 100～240V; also compatible with DC 110～350V

Output: 24VDC, 2.5A, rated power 60W

Adjustable output range: 24～28V DC

Dynamic Boost: Temporary output up to 5A (2× rated current) for heavy-load and capacitive load startup

Signal: DC‑OK relay alarm output (predictive condition monitoring for early fault warning)

Protection class: IP20 (for cabinet installation only)

Operating temperature: -25℃ ~ +70℃

Dimensions: W32 mm × H99 mm × D90 mm, DIN rail mounting

Termination: Screw terminals (SC). Alternative push-in version in the same series: 2909576

✅ Product Features

1. 4th-generation QUINT POWER design, low power loss, high efficiency and low heat generation
2. Predictive condition monitoring to distinguish overload warning and hard fault
3. Wide temperature range, suitable for industrial control cabinets, automation equipment and building management systems
4. Certifications: UL/cULus, CE, EAC; partial versions with C1D2 explosion-proof certification
5. HS code: 85044083 / 85044095

✅ Typical Applications

24V DC power supply for PLCs, sensors, solenoid valves and small control cabinets; ideal for loads with high inrush current during startup.

✅ Alternative Model Reference

2909576: QUINT4-PS/1AC/24DC/24DC/2.5/PT, Push-in connection version. Electrical parameters are identical, only terminal type differs, direct interchangeable.

✅ Troubleshooting Guide

1. DC‑OK indicator off: Check input voltage and input fuse; output short-circuit / overcurrent protection activated and latched
2. Voltage drop at load startup: Verify Dynamic Boost requirement or insufficient power rating
3. Over-temperature alarm: Check cabinet ventilation, load rate and excessive ambient temperature
4. High output voltage: Fine-tune output potentiometer to calibrate to 24V

Phoenix Contact 2904598 (QUINT4-PS/1AC/24DC/2.5/SC) Similar Product Recommendations

Core matching criteria: Single-phase AC input, 24VDC 2.5A (60W), DIN rail mounted, industrial grade with overload and short-circuit protection. Classified into [Phoenix direct replacements], [European & American premium equivalents], [Japanese brands], [Taiwanese / domestic economy models]

Key advantages of original unit: Dynamic Boost with 2× temporary current, DC‑OK relay alarm, wide temperature range -25~+70℃, screw terminals

1. Phoenix Contact same-series direct replacements (preferred for projects requiring same brand)
2. 2909576 QUINT4-PS/1AC/24DC/2.5/PT

Fully identical electrical parameters, only changed to Push-in terminals, directly interchangeable; suitable for projects requiring fast wiring.

2. 2866747 QUINT-PS/1AC/24DC/3.5 (legacy QUINT model, larger power margin)

24V/3.5A, same QUINT platform with SFB selective fuse breaking, reserved capacity for future load expansion; slightly wider footprint.

1. Premium European & American counterparts (best performance match for QUINT4 in industrial replacement)

Weidmüller

1478160000 PRO MAX3 60W 24V 2.5A

Single-phase 100–240VAC, 24V/2.5A, DIN rail mount, Power Boost function, DC‑OK relay signal, wide temperature range, screw terminals. Same class as QUINT4, can be installed side-by-side in control cabinets.

SIEMENS SITOP

6EP1331-2BA01 SITOP PSU100C 24V/2.5A 60W

Input 120/230VAC, 24V 2.5A, DC OK indicator light, short-circuit and overload protection; standard DIN rail, suitable for Siemens PLC integrated cabinets. Slightly weaker transient peak capability compared with QUINT4.

PULS (high-end industrial power supply, excellent boost performance)

ML60.241 24V 2.5A 60W

Wide single-phase input, high-capacity Boost, -20~+70℃, relay status output; high-end industrial selection, reliability comparable to QUINT POWER, higher price.

III. Japanese Brands

OMRON

S8VS-06024A

60W, 24V 2.5A, DIN rail mount; built-in digital display for direct reading of output voltage and current; screw terminals; operating temperature -10~60℃. Inferior low-temperature performance vs Phoenix, suitable for standard indoor control cabinets.

1. Taiwanese / Domestic Economy Models (cost-down solution for non-demanding environments)

Mean Well

DR-60-24

DIN rail power supply, 24V 2.5A, 60W; cost-effective and readily available; basic DC OK indicator only. No relay alarm and no 2× Dynamic Boost. Use cautiously for loads with high inrush current; applicable for standard environments to power sensors and small PLCs.

Delta

DRM-24V60W1AZ

Single-phase input, 24V/2.5A, DIN rail mount; basic industrial protection, moderate price, widely adopted in domestic projects.

✅ Selection Comparison Table

⚠️ Key Notes for Replacement

1. If loads include many solenoid valves or capacitive loads requiring high startup inrush current: Prioritize models with Boost + relay alarm: Weidmüller PRO MAX3, PULS ML60.241. Direct replacement with Mean Well DR-60-24 is not recommended.
2. Project specification requires DC‑OK dry contact signal to PLC for power fault diagnosis: Models with relay alarm must be selected; indicator-only versions cannot support remote fault reporting.
3. Low-temperature environments (below -10℃): Exclude OMRON and Mean Well. Select Phoenix / Weidmüller / PULS.
4. Mounting width: Original Phoenix unit width 32mm; some competitors are 40mm wide. Verify DIN rail space for cabinet retrofit.

Phoenix Contact 2904598 (QUINT4-PS/1AC/24DC/2.5/SC) Application Scenarios

Supported by core strengths: 2.5A rated, 5A/5s Dynamic Boost, DC‑OK relay dry contact early warning, wide temperature -25~+70℃, SFB selective fuse breaking, DIN rail mounting. Designed for 24V DC power supply in small control cabinets requiring high power supply reliability, fault early warning and tolerance to inrush startup current.

1. Factory Automation & Machinery (Most Common)
2. Small standalone machine control cabinets: Auxiliary control boxes for machine tools, packaging machines, inspection equipment, small conveyor control cabinets.

Powered loads: Medium/small PLC, remote IO modules, proximity sensors, photoelectric sensors, indicator lights, a small number of solenoid valves.

Selection rationale: Solenoid valves draw high inrush current at power-on. Dynamic Boost 2× short-time current prevents voltage drop and false protection triggering during startup. DC‑OK relay connected to PLC to implement remote power fault alarm.

2. Robot auxiliary control cabinets: Power supply for robot peripheral safety IO, sensor banks and safety relays.
3. Test fixtures / automated test benches: Laboratory and production line jigs. Wide temperature range accommodates large temperature fluctuations on the shop floor; predictive fault monitoring simplifies maintenance.
4. Water Treatment & Municipal Engineering
5. Small pump station and valve control boxes: Local on-site control cabinets powering RTUs, flow/pressure transmitters, electric valve actuators and signal acquisition modules.

Selection rationale: Severe grid fluctuation on site, wide input voltage + wide temperature range. DC‑OK signal uploaded to SCADA for early warning of power supply aging and anomalies.

2. Building Automation (BA), HVAC control cabinets: DDC controllers, temperature/humidity sensors, damper actuators.

Note: If many high-power damper actuators are present, current calculation is required. This 60W power supply is only suitable for small BA control cabinets.

III. Power & New Energy Auxiliary Control Cabinets

1. Secondary control of switchgear, local acquisition units in combiner boxes: Power monitoring modules, temperature acquisition, communication gateways and compact RTUs.

Advantages: SFB selective breaking, short-circuit on one branch will not shut down the entire 24V system. DC‑OK dry contact uploaded to back-end monitoring system, meeting power industry requirements for power status reporting.

2. Local measurement & control boxes for PV / energy storage systems (with properly temperature-controlled cabinet): -25℃ cold-start capability, suitable for northern winter cabinet low-temperature conditions.
3. Process Industry (Chemical, Oil & Gas, Pharmaceutical) Local Control Cabinets

Local control cabinets outside hazardous explosion zones, powering pressure/level transmitters, safety barriers and fieldbus modules;

Suitable for continuous process manufacturing. Predictive monitoring provides alarm before total failure, reducing unplanned downtime.

1. Rail Transit, Port & Logistics Auxiliary Equipment
2. Small port sorting equipment, access control, industrial field switches;
3. Local signal acquisition cabinets for rail transit auxiliary systems, robust against grid disturbance.
4. Non-standard Machinery & System Integrator Cabinets

Compact integrated control cabinets where total 24V load power ≤60W with inrush loads.

Typical load example: Medium-small PLC (15W) + 8-point remote IO + 6~10 sensors + 2~3 24V solenoid valves. Static current approx.1.8A, startup peak current up to 4~5A, which perfectly matches the Dynamic Boost capability of this power supply.

✅ Suitable / Unsuitable Scenarios Quick Reference

✅ Recommended Application

Loads contain solenoid valves or capacitive loads with high power-on inrush current

Power fault signal (DC‑OK dry contact) needs to be sent to upper PLC/SCADA for remote monitoring

Large cabinet temperature variation, ambient temperature can drop below -10℃ in winter

Process requirement: short-circuit on one branch must not cause total 24V power loss (SFB selective fuse breaking)

Project requires high-reliability industrial power supply with CE/UL/EAC certifications

❌ Not Recommended

Continuous static load current permanently higher than 2.2A (insufficient margin)

Large quantity of high-power solenoid valves and high-current actuators with sustained peak load

Non-enclosed cabinets with heavy moisture and corrosive atmosphere (coated version required)

Total 24V load power significantly exceeding 60W; higher-rated QUINT4 power supply shall be selected.

✅ Matching Expansion Options (Same Cabinet Layout)

1. Redundant power supply: Pair with Phoenix redundant module, two 2904598 units for redundancy to improve availability;
2. Backup power: Match with QUINT4 DC-UPS module to maintain power briefly during mains dropout, protecting PLC and communication data.