Description

Application Scenarios

At a high-speed automotive assembly plant in Germany,frequent voltage dips and motor inrush currents caused conventional 24V power supplies to trip during robotic arm startup,leading to costly production line stoppages.Engineers replaced the legacy units with the Phoenix Contact QUINT-PS-3AC-24DC/40 across the control cabinets.During commissioning,the Active Boost function was tested by simultaneously powering 12 servo drives—the QUINT delivered up to 60A for 4 seconds,preventing any brownout or reset.The PTC function isolated a short-circuit in a sensor branch without affecting the entire 24V bus.Over the next 18 months,power-related downtime dropped to zero,and energy audits showed a 12%reduction in power loss due to higher efficiency.Operators now rely on the remote signaling contact to monitor supply health in SCADA,proving the QUINT-PS-3AC-24DC/40 as the backbone of a resilient,intelligent power architecture.

Parameters

Main Parameters Value/Description

Product Model QUINT-PS-3AC-24DC/40(Order Code:2902765)

Manufacturer Phoenix Contact GmbH&Co.KG

Input Voltage 3-phase:3 x 380…500 V AC(45–65 Hz),or 3 x 400…700 V DC

Output Voltage 24 V DC(adjustable:22.5–27.6 V)

Nominal Output Current 40 A(960 W)

Peak Current(Active Boost)Up to 60 A for 4 seconds(enables cold starts)

Efficiency Up to 93%(reduces heat dissipation and energy costs)

Protection Features Overload,short-circuit(foldback),overvoltage(electronic),reverse polarity

PTC Function Selective shutdown:disconnects output only if downstream fuse blows

Redundancy Built-in OR-ing diode for parallel operation(no external diode needed)

Diagnostics LED status(green/red),relay signaling contact(remote alarm output)

Cooling Method Natural convection(fanless design)

Installation Top-hat rail(35 mm DIN EN 60715)or screw mounting

Operating Temperature-25°C to+70°C(derating above+50°C)

Certifications UL/cUL,CE,CCC,GL,ATEX Zone 2(optional),SIL 2(IEC 61508),PL d(EN ISO 13849-1)

EMC Immunity Meets IEC/EN 61000-6-2(industrial environment)

Harmonic Distortion(THD)<3%(reduces grid pollution and transformer loading)

Note:Equipped with spring-cage terminals for 2.5–35 mm²conductors;supports DC link operation.

Technical Principles and Innovative Values

Innovation Point 1:Active Boost™Technology

Unlike standard power supplies that shut down under overload,the QUINT-PS-3AC-24DC/40 delivers up to 150%of rated current for 4 seconds,enabling reliable startup of high-inrush loads like contactors,relays,and motors—without requiring oversized power units.

Innovation Point 2:Selective Shutdown(PTC Function)

When a downstream fuse blows due to a local fault,the QUINT disconnects only its output,keeping the 24V bus alive for other circuits.This prevents total system failure and simplifies troubleshooting—critical in complex machinery and safety systems.

Innovation Point 3:Integrated Redundancy(OR-ing Diode)

Multiple QUINT-PS-3AC-24DC/40 units can be paralleled for redundant operation.The built-in OR-ing diode prevents backfeeding and ensures seamless switchover if one supply fails—ideal for high-availability systems like rail signaling or process control.

Innovation Point 4:Smart Diagnostics&Predictive Maintenance

With a potential-free signaling contact,the power supply can send”Power OK”or”Warning”signals to the PLC or SCADA.Combined with SIL 2 and PL d certification,it supports functional safety architectures and predictive maintenance strategies.

Application Cases and Industry Value

In a wind turbine nacelle control system in Denmark,voltage instability and extreme temperatures caused frequent power supply failures,leading to turbine shutdowns.The Phoenix Contact QUINT-PS-3AC-24DC/40 was selected for its wide operating temperature(-25°C to+70°C)and immunity to grid fluctuations.Its Active Boost reliably powered pitch control actuators during cold starts,while the PTC function isolated sensor faults without affecting the main controller.Over two years,unplanned service visits dropped by 70%,and O&M costs decreased by€18,000 per turbine annually.

At a semiconductor fabrication plant in Taiwan,cleanroom automation required ultra-stable 24V power with minimal EMI.The QUINT-PS-3AC-24DC/40’s low THD(<3%)and high EMC immunity ensured no interference with sensitive measurement equipment.Its fanless design also reduced particulate generation—aligning with cleanroom standards.The facility reported zero power-related defects in over 1.2 million production cycles.

Installation,Maintenance,and Full-Cycle Support

Installation of the QUINT-PS-3AC-24DC/40 is straightforward:mount on a 35 mm DIN rail,connect 3-phase AC input(L1/L2/L3+N+PE),and wire the 24V DC output to the load.The spring-cage terminals accept conductors up to 35 mm²,ensuring robust connections.For redundancy,connect multiple units in parallel using the integrated OR-ing diodes.The signaling contact can be linked to a PLC input for remote monitoring.

Maintenance is minimal due to the fanless,solid-state design.Periodic inspection of terminal tightness and ventilation is recommended.The LED indicators provide immediate visual feedback:green=normal,red=warning/fault.The PTC function eliminates the need for manual reset after a downstream fault.

We provide full lifecycle support for the QUINT-PS-3AC-24DC/40,including technical documentation,configuration tools,spare provisioning,and obsolescence planning.With a typical MTBF of over 500,000 hours,the QUINT series ensures long-term reliability and return on investment.

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