Phoenix Contact QUINT4-PS/1AC/24DC/40 Power Supply 24 V 40 A

QUINT4-PS/1AC/24DC/40 power supply, 24 V DC 40 A (960 W)

The QUINT4-PS/1AC/24DC/40 (item number 2904603) is the largest single-phase unit of the QUINT4 POWER line: 24 V DC at 40 A, or 960 W, from a wide-range 100 to 240 V AC input. It carries the same SFB technology and preventive monitoring as its smaller siblings but with the extra headroom needed for large control panels, I/O-intensive racks and groups of valve actuators. Seven Star LLC supplies the QUINT4-PS/1AC/24DC/40 in Oman and the GCC as an independent supplier in Muscat, and this page summarises the data sheet to help with sizing and RFQ preparation.

QUINT4-PS/1AC/24DC/40 type code and power ladder

The code reads QUINT4-PS (fourth-generation QUINT POWER), 1AC (single-phase input), 24DC (24 V DC output) and 40 (40 A). On the single-phase ladder the 40 A unit follows the 20 A type, which delivers 480 W, and doubles it. It is physically wider: 120 x 130 x 140 mm and 2.6 kg, against 70 mm width and 1.3 kg for the 20 A type, so cabinet space should be planned in advance.

QUINT4-PS/1AC/24DC/40 technical specifications

Power reserves of the 40 A unit

The QUINT4-PS/1AC/24DC/40 supplies 45 A as a static boost, which is 125 % of nominal, and 60 A for five seconds as a dynamic boost, which equals 200 %. The SFB pulse is 215 A for 15 ms. In practice this means that a 40 A bus can protect many 6 A or 10 A branch breakers selectively: a short on one branch forces the unit to deliver enough current for the breaker to trip magnetically, while the remaining branches stay at voltage. The data sheet quotes control deviation of under 0.5 % for static load change and under 1 % for dynamic load change from 10 to 90 %, so the voltage stays stable during switching of large groups of loads.

Efficiency, losses and cabinet heat

A QUINT4-PS/1AC/24DC/40 at nominal load dissipates at most 50 W, according to the data sheet, at both 120 V AC and 230 V AC. With efficiency of 94.8 to 95.9 % this is among the lower-loss options in this power class, which helps in cabinets without active cooling. Even so, the unit should be mounted with free air space above and below, and the ambient temperature around it should be checked against the 60 °C derating threshold, above which output current falls by 2.5 % per kelvin.

System fit and related types

The QUINT4-PS/1AC/24DC/40 is the main supply for large PLC cabinets and instrument marshalling panels. Smaller loads suit the QUINT4-PS/1AC/24DC/10 or QUINT4-PS/1AC/24DC/20, and a three-phase source is better served by the QUINT4-PS/3AC/24DC/40/CO. Parallel operation for redundancy or capacity increase is permitted by the data sheet, and the output terminals take conductors up to 16 mm² flexible, which suits the high current. Downstream, multi-channel electronic circuit breakers and surge protection plugs from the accessory list are commonly paired with the unit.

Selection checklist

• Calculate the real 24 V load and verify that the 40 A rating, plus margin, covers it.
• Check that the AC upstream breaker is sized for the 16 A internal fuse and the input current at the lowest mains voltage (11.6 A at 100 V AC).
• Allocate 120 mm of DIN rail width and 140 mm depth.
• Plan output wiring up to 16 mm² and the cable length to hold voltage drop within limits.
• Check the approvals required by the project (marine, hazardous location).

Installation and maintenance

For the QUINT4-PS/1AC/24DC/40, follow the data sheet torque values, set the output voltage after the load is connected, and configure the signal outputs to suit the PLC. A periodic review should confirm the LED bar graph does not show persistent boost operation, which would indicate an undersized supply, and should keep the ventilation slots clear of dust. Keep a spare unit or at least plan lead time for critical plants.

Typical applications in Oman and the GCC

The QUINT4-PS/1AC/24DC/40 class suits gas compression and metering skids, pumping stations, desalination RO control cabinets, power-plant auxiliary panels and large I/O cabinets in petrochemical units. Hot cabinets in coastal and desert sites make the efficiency figure and the 70 °C operating limit relevant, while a wide AC input allows the same type to be used at 230 V sites and at some 110 V sources.

Information to send with an RFQ

• Full type designation or item number, and quantity
• Mains voltage and frequency at site, and whether the supply is AC, DC or three-phase
• Total load current including inrush and motor starting, plus any redundancy or parallel-operation requirement
• Ambient temperature range, altitude and cabinet ventilation
• Required approvals such as marine, hazardous-area or UL, and any project specification references
• Delivery location and required documents

Documents and quotation

The manufacturer data sheet for the QUINT4-PS/1AC/24DC/40 is attached to this page.

Send item number 2904603, quantity and delivery location to Seven Star LLC and request a quotation.