Weidmuller PRO MAX3 240W 24V 10A Three-Phase Power Supply

Overview of the Weidmuller PRO MAX3 240W Three-Phase Power Supply

Weidmuller PRO MAX3 240W (order number 1478180000, type PRO MAX3 240W 24V 10A) is a three-phase switch-mode DIN rail power supply that turns a 400 to 500 V AC industrial mains supply into a regulated 24 V DC output of 10 A at 60 degrees Celsius. Where single-phase units draw from L and N, this model connects directly to L1, L2, L3 and PE, which balances the load across phases and avoids the need for a separate control transformer in many panels. It is part of the Weidmüller PROmax range for demanding automation tasks.

Seven Star LLC supplies the Weidmuller PRO MAX3 240W on request from Muscat. Oman’s industrial sites, pump stations, substations and process plants commonly distribute 400 V three-phase power to their control rooms, so a wide-range three-phase input removes a conversion step and makes the 24 V supply for PLCs, instruments and valve actuators easier to engineer and easier to maintain.

Operating Principle of the Weidmuller PRO MAX3 240W

The Weidmuller PRO MAX3 240W accepts three-phase input from 320 to 575 V AC, or two-phase input from 360 to 575 V AC, with a rated input of 3 x 400 to 3 x 500 V AC at 45 to 65 Hz. It also accepts DC input from 450 to 800 V DC. Input current is only 0.4 A per phase at 400 V and 0.35 A at 500 V, and nominal power consumption is 262.3 VA with a typical power factor of 0.85 at 400 V. A varistor and an internal input fuse protect the front end, and inrush current is limited to a maximum of 15 A.

The output is regulated to 24 V DC plus or minus 1 percent with residual ripple below 50 mVss at full load, and it can be adjusted from 22.5 V to 29.5 V. Current limiting starts above 120 percent of nominal current. The supply can bridge an AC failure for at least 20 ms at nominal current, which keeps controllers running through short voltage dips on the grid or generator, and it reaches an efficiency of 91.5 percent.

Design and Installation of the Weidmuller PRO MAX3 240W

The metal, corrosion-resistant housing of the Weidmuller PRO MAX3 240W measures 60 mm wide, 130 mm high and 125 mm deep and weighs 1210 g. It snaps onto a TS 35 rail in horizontal orientation, needs 50 mm of free space above and below for convection cooling, and can be placed side by side with its neighbours with no gap. The input has four screw terminals for L1, L2, L3 and PE, and the output has eight screw terminals for the plus and minus outputs and the relay contact, with conductor sizes up to 4 mm2 flexible and 6 mm2 rigid.

A bicolour LED shows the output state, and a floating relay contact rated at 30 V DC and 1 A follows the DC voltage so that a PLC or alarm panel can monitor the supply. Up to five units can be connected in parallel according to the datasheet, which supports redundancy or extra power in a growing panel.

Sizing is straightforward: add up the 24 V current of the PLC, instruments and relays, keep a margin for inrush and future expansion, and remember that continuous output current falls from 12 A at 45 degrees Celsius to 7.5 A at 70 degrees Celsius. In a sealed cabinet in Oman summer conditions, that derating curve should be checked against the expected internal temperature before the order is placed.

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Key Features of the Weidmuller PRO MAX3 240W

The following characteristics are listed on the official datasheet for the Weidmuller PRO MAX3 240W.

• Three-phase wide-range input of 3 x 400 to 3 x 500 V AC with DC input of 450 to 800 V DC.
• 24 V DC output of 10 A at 60 degrees Celsius, with 12 A continuous at 45 degrees Celsius and 7.5 A at 70 degrees Celsius.
• Operation from minus 25 to plus 70 degrees Celsius with derating of 75 percent at 70 degrees Celsius.
• Full power up to 3000 m altitude, with derating up to 6000 m.
• Power loss of 4.8 W at idle and 22.3 W at nominal load.
• Insulation voltage of 4 kV between input and output, protection class I and surge voltage category III.
• Compliance with EN 55032 Class B emissions, EN 55024 immunity and EN 60204 machine electrical equipment.
• Approvals listed include cURus, cULus and cULusEX, with SELV, PELV and EN 61558-2-16 safety transformer compliance.

Industrial Applications in Oman and the GCC

The Weidmuller PRO MAX3 240W is a strong fit for motor control centres, packaged compressor and pump skids, water and wastewater plants, power substations and manufacturing lines in Oman, particularly where only three-phase power is available in the control cabinet. In free zones such as Sohar, Salalah and Duqm, plant owners often specify three-phase 24 V supplies to reduce current on the incoming cable and to keep the load balanced.

Related products from Seven Star LLC include the Phoenix Contact QUINT Power Supply 24 V 10 A, the ABB AC 800F Power Supply Module SA 811F, and the Weidmuller Klippon Connect SAK terminal block. Our team can propose a complete panel supply and wiring package.

Technical Specifications of the Weidmuller PRO MAX3 240W

The table gives values from the Weidmüller datasheet for order number 1478180000.

Request a Quote for the Weidmuller PRO MAX3 240W

To request the Weidmuller PRO MAX3 240W, share the quantity, supply voltage, load current and ambient temperature of the panel. Seven Star LLC will check availability and lead time, advise on accessories such as end brackets, and send a formal quotation for delivery across Oman and the GCC. The official Weidmüller datasheet is attached, and our engineers can discuss it with your design team.