Phoenix Contact QUINT-PS/1AC/24DC/40 Ruggedized Power Module

Product Overview

Phoenix Contact QUINT-PS/1AC/24DC/40: Industrial Resilience for Harsh-Environment Power Distribution

The Phoenix Contact QUINT-PS/1AC/24DC/40 is a premium-grade, single-phase DIN rail power supply engineered to deliver stable 24 VDC at 40 A continuous output in the most demanding industrial environments. Designed under Phoenix Contact’s renowned QUINT Series philosophy — where reliability is non-negotiable — this unit integrates active power boost, selective fuse tripping, and preventive function monitoring to ensure uninterrupted power delivery across critical control architectures.

Whether deployed in a high-temperature steel mill, a moisture-laden water treatment facility, a vibration-intensive mining conveyor system, or an EMI-saturated substation switchgear cabinet, the QUINT-PS/1AC/24DC/40 maintains output stability without derating. Its wide-range AC input (85–264 VAC) accommodates global grid fluctuations, while its active power boost capability — delivering up to 200% rated current for 12 ms — ensures reliable startup of capacitive and inductive loads such as motor starters, solenoid valves, and large I/O racks.

In modern industrial control cabinets, the QUINT-PS/1AC/24DC/40 serves as the backbone power source for Siemens SIMATIC S7-300/S7-400 PLC backplanes, Rockwell Allen-Bradley ControlLogix chassis, and Schneider Electric Modicon M340 racks. It reliably powers Phoenix Contact’s own AXIOLINE F and INLINE I/O terminal blocks, as well as TRIO-PS series redundancy modules when configured in parallel N+1 architectures. System integrators routinely pair it with Phoenix Contact QUINT-DIODE/40 redundancy modules to achieve fault-tolerant 24 VDC bus architectures in continuous process lines.

The unit’s SFB (Selective Fuse Breaking) technology generates a targeted current pulse to blow downstream branch fuses selectively, isolating faults without tripping the entire bus — a critical feature in multi-zone control panels where a single fault must not cascade into a full system shutdown. This makes it particularly well-suited for safety-instrumented systems (SIS) where IEC 61511 compliance demands fault isolation and continued operation of unaffected safety loops.

For communication-intensive architectures, the QUINT-PS/1AC/24DC/40 provides clean, low-ripple DC power to PROFIBUS DP repeaters, PROFINET managed switches such as the Phoenix Contact FL SWITCH series, and serial communication gateways. Stable power is essential for deterministic fieldbus timing — voltage sags or ripple on the 24 VDC bus can introduce latency or frame errors in time-sensitive PROFINET IRT or EtherNet/IP networks.

In oil and gas upstream and midstream facilities, this power supply is deployed inside Ex e increased-safety enclosures to power intrinsically safe barriers, Zener barriers, and galvanic isolators feeding field instruments in Zone 1 and Zone 2 hazardous areas. Its stable output ensures that HART-enabled transmitters, pressure sensors, and flow meters receive clean power free from interference that could corrupt 4–20 mA analog signals or HART digital overlays.

For preventive maintenance, the QUINT-PS/1AC/24DC/40 features a DC OK relay output and a visual LED status indicator, enabling integration with SCADA systems or PLC diagnostic routines via Phoenix Contact PSR safety relay modules or standard digital input cards. Operators receive early warning of output voltage drift before a fault condition develops — reducing unplanned downtime in continuous production environments such as automotive assembly lines, pharmaceutical batch reactors, and pulp and paper mills.

TOPNLMS maintains verified stock of the QUINT-PS/1AC/24DC/40 sourced through authorized distribution channels. Each unit undergoes incoming inspection including output voltage verification, load regulation testing, and visual inspection prior to dispatch. All units are shipped with original Phoenix Contact packaging and documentation.

Rugged Specifications Table

Comprehensive Protection Solutions

The QUINT-PS/1AC/24DC/40 is rarely deployed in isolation — it forms the power foundation of a layered protection architecture. In a typical heavy-industry control cabinet, it feeds 24 VDC to a Phoenix Contact QUINT-DIODE/40 redundancy module, enabling seamless N+1 parallel operation where a second QUINT power supply takes over instantaneously upon primary failure. Downstream, Phoenix Contact CLIPLINE complete terminal blocks distribute power to field devices, while PSR-SCP- series safety relay modules monitor E-stop circuits and light curtain signals.

For PLC-based control, the QUINT-PS/1AC/24DC/40 powers Siemens ET 200SP distributed I/O stations over PROFINET, ensuring that analog input modules reading 4–20 mA signals from pressure transmitters and thermocouples receive stable, noise-free power. In Rockwell architectures, it supplies Allen-Bradley 1734 POINT I/O modules and 1756 ControlLogix chassis power supplies. Schneider Electric Modicon STB distributed I/O islands are equally well-served by this unit’s low-ripple output.

Communication infrastructure within the same cabinet — including Phoenix Contact FL SWITCH 2000 managed PROFINET switches, PROFIBUS DP/PA segment couplers, and Moxa NPort serial device servers — depends on the QUINT-PS/1AC/24DC/40 for deterministic, interference-free power. Any instability in the 24 VDC bus directly impacts network timing and can cause packet loss in time-critical control loops. The QUINT series’ active filtering and SFB technology eliminate this risk.

In safety-instrumented systems, the QUINT-PS/1AC/24DC/40 powers Phoenix Contact MACX MCR-EX intrinsic safety barriers and galvanic isolators, which interface with SIL 2-rated field instruments in hazardous areas. The clean DC output ensures that the 4–20 mA HART signals passing through these barriers are not corrupted by power-side noise — a critical requirement for SIS integrity under IEC 61511.

Application in Critical Infrastructure

In oil and gas upstream facilities, the QUINT-PS/1AC/24DC/40 is installed inside Ex e certified junction boxes and marshalling cabinets to power wellhead control panels, ESD (Emergency Shutdown) systems, and fire and gas detection controllers. Its wide operating temperature range and vibration resistance make it suitable for offshore platform environments where ambient conditions are extreme and maintenance access is limited.

In mining and mineral processing, this power supply drives conveyor belt PLC control panels, crusher automation systems, and ventilation fan variable frequency drive (VFD) control circuits. The SFB technology is particularly valued in these environments, where cable runs are long and downstream short-circuit faults are common — selective fuse tripping prevents a single cable fault from shutting down an entire conveyor line.

In power generation and electrical substations, the QUINT-PS/1AC/24DC/40 supplies protection relay panels, bay control units, and IEC 61850 communication gateways. Its EMC immunity to IEC 61000-6-2 ensures stable operation in high-voltage switchgear environments where electromagnetic interference levels are severe.

In water and wastewater treatment, it powers SCADA RTU panels, chemical dosing pump controllers, and level transmitter signal conditioning circuits. The unit’s ability to operate at high humidity without derating is essential in pump station environments where condensation is a persistent challenge.

In metallurgy and steel production, the QUINT-PS/1AC/24DC/40 is deployed in rolling mill automation panels, ladle furnace control systems, and continuous casting machine PLCs — environments characterized by extreme heat, vibration, and electromagnetic noise from large induction furnaces and arc furnaces.

Security & Quality FAQ

Q1: What warranty does TOPNLMS provide for the QUINT-PS/1AC/24DC/40?
All units sold by TOPNLMS carry a 12-month warranty covering manufacturing defects and functional failures under normal operating conditions. Warranty claims are processed with replacement or repair, and our technical team provides remote diagnostic support to minimize downtime during the claims process.

Q2: How is each unit tested before shipment?
Every QUINT-PS/1AC/24DC/40 unit undergoes incoming inspection at our Xiamen facility, including output voltage verification under load, visual inspection for physical damage, and verification of serial number against manufacturer records. Units are dispatched in original Phoenix Contact packaging with all original documentation and accessories.

Q3: Is this unit compatible with my existing Siemens, Rockwell, or Schneider PLC system?
Yes. The QUINT-PS/1AC/24DC/40 outputs standard 24 VDC compliant with IEC 61131-2, making it universally compatible with Siemens SIMATIC, Rockwell Allen-Bradley, Schneider Electric Modicon, Mitsubishi MELSEC, Omron SYSMAC, and all other major PLC platforms that accept 24 VDC auxiliary power. No special configuration is required.

Q4: Can TOPNLMS support long-term or repeat procurement of this model?
Yes. TOPNLMS maintains ongoing stock of the QUINT-PS/1AC/24DC/40 and can support scheduled blanket orders, emergency replacement procurement, and project-quantity sourcing. For large-volume inquiries or long-term supply agreements, contact our sales team directly for pricing and lead time confirmation.