Phoenix Contact TRIO-PS-2G/3AC/24DC/20 3-Phase Power Supply

TRIO-PS-2G/3AC/24DC/20 three-phase power supply, 24 V DC 20 A

The TRIO-PS-2G/3AC/24DC/20 (item number 2903155) is the 480 W three-phase member of the TRIO POWER second-generation family. It converts 3 x 400 to 500 V AC (or 2 x 400 to 500 V AC) into 24 V DC at 20 A, with a dynamic boost to 30 A for five seconds and push-in terminals on input, output and signal. The manufacturer product page describes the TRIO POWER range with push-in connection as being tailored to machine building, with an electrically and mechanically robust design for challenging ambient conditions. Seven Star LLC supplies the TRIO-PS-2G/3AC/24DC/20 in Oman and the GCC as an independent supplier in Muscat, and the figures below come from the manufacturer product data page for this item.

Understanding the TRIO-PS-2G/3AC/24DC/20 name

TRIO-PS-2G is the second-generation TRIO POWER power supply, 3AC denotes the three-phase AC input, 24DC the 24 V DC output and 20 the nominal output current in amperes. The same code pattern gives the 5 A, 10 A and 40 A siblings of the three-phase TRIO line, and the single-phase TRIO-PS-2G/1AC types in parallel.

TRIO-PS-2G/3AC/24DC/20 technical specifications

Behaviour of the TRIO-PS-2G/3AC/24DC/20 under load

The TRIO-PS-2G/3AC/24DC/20 output characteristic is defined as a U/I curve with dynamic load reserve. The unit supports 30 A for five seconds, which is 150 % of nominal and corresponds to 720 W, enough to start contactors, magnetic valves or switched-mode loads with high inrush. Control deviation is under 1 % for a static load change from 10 to 90 %, under 3 % for a dynamic load change at 10 Hz and under 0.1 % for a mains change of ±10 %. The product is short-circuit proof and no-load proof, and the output overvoltage protection limits the output to 30 V DC.

Where it fits and sibling types

The TRIO-PS-2G/3AC/24DC/20 doubles the output of the TRIO-PS-2G/3AC/24DC/10 for panels with larger I/O or valve groups and sits below the QUINT4-PS/3AC/24DC/20 for those who want preventive monitoring and SFB. In the single-phase direction the TRIO-PS-2G/1AC/24DC/20 delivers the same 480 W. Parallel connection for redundancy or increased capacity, and series connection, are stated in the product data.

Selection and ordering checklist

• Confirm the network type: three-phase 400 to 500 V AC, or two-phase within the stated tolerance.
• Sum the 24 V load and leave reserve; plan below 20 A continuous.
• Check inrush and starting currents against the 30 A five-second reserve.
• Plan 65 mm of rail width, 160 mm depth and 50 mm free space above and below.
• Choose upstream breakers of 6 to 16 A with B, C, D or K characteristic.
• Check the altitude and temperature derating where relevant.

Installation and service

Mount the TRIO-PS-2G/3AC/24DC/20 horizontally on a 35 mm rail. The input accepts rigid conductors up to 4 mm² and flexible up to 2.5 mm² (10 mm strip length), the output accepts rigid up to 10 mm² and flexible up to 6 mm² (15 mm strip length), and the signal terminals take up to 1.5 mm² (8 mm strip length). Set the output with the potentiometer under real load, and wire the 13/14 contact to the PLC for DC OK monitoring. Missing-phase alarms and repeated DC OK drops should be investigated at the supply side before replacing the unit.

Typical applications in Oman and the GCC

Typical uses of the TRIO-PS-2G/3AC/24DC/20 are pumping and compressor packages, MCC control compartments, water and wastewater plant panels and process skids where a 400 V three-phase source is available. The extended temperature range and altitude rating suit hot cabinets and elevated sites, and the metal housing with a polycarbonate hood helps heat dissipation.

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

Send the part number TRIO-PS-2G/3AC/24DC/20 or item number 2903155 and Seven Star LLC will confirm the documents available for this item. Provide quantity and delivery location when you request a quotation.