PULS CT5.241 24V 5A 120W 3-Phase DIN Rail Power Supply

A compact 120 W supply for 380-480 V industrial networks

The PULS CT5.241 is a 24 V, 5 A (120 W) DIN rail supply from the cost-optimised CT-Series for 380 to 480 Vac. Its main feature, according to the datasheet, is that it uses only two legs of a three-phase system. That saves wiring and installation cost and lets PULS use a smaller housing, 40 mm wide, without shrinking the terminals. Input fuses are already included, an input-transient blanking circuit filters mains disturbances, electronic inrush limiting keeps the current surge small, and a 20 % PowerBoost reserve (6 A) may be used continuously up to +45 C.

The CT5.241 is a good fit for panels on 400 V or 480 V networks without a neutral, where single-phase supplies would need a transformer. For higher power on the same networks see the QT40.241 and XT40.241 on this site.

Technical specification

What two-phase operation means for the installation

The unit connects to two phases (L1 and L2), so a three-phase conductor set is not required for this device. Because it draws only 0.75 A at 400 Vac, the datasheet states that an unbalancing of the individual phases is not expected. The low power factor of 0.45 at 400 Vac is typical of a simple supply without PFC: the apparent current is higher than the active power suggests, so size upstream protection and wiring accordingly. Input fuses are included inside the unit.

Installation notes

• Snap the unit onto a standard top-hat rail with L1 and L2 terminals at the bottom; any other orientation requires derating.
• Pick copper conductors for 60 C, 75 C or 90 C insulation according to the ambient band; ferrules are advisable on stranded wire.
• Keep the PE connection; the supply is class of protection I.
• Accessories: ZM1.WALL wall bracket and ZM12.SIDE side bracket.
• Set the output voltage between 24 and 28 V with the front potentiometer to compensate cable drop.

Where it fits in GCC panels

Many drive, pump and compressor panels in Oman and the Gulf are fed from 400 V 3-phase boards and need only a small 24 V rail for relays, small PLCs and sensors. A 5 A unit that uses two phases avoids a control transformer and a dedicated single-phase circuit. For larger 24 V demand use one of the 3-phase DIMENSION supplies on this site. See the Power Modules category.

Selection and installation notes

A DIN-rail power supply is selected from the load current plus a margin of about twenty to thirty percent for start-up and ageing. Protect the input with the fuse or breaker the maker names, leave the clearances above and below for cooling, keep the output wiring short and check the output voltage under load.

Information needed for a quotation

Send the full model code, the quantity, the delivery location in Oman or the GCC, the intended use and any accessories needed, so that the complete package can be quoted together.

Documents and supply information

The manufacturer data sheet is attached to this page and should be read together with the project specification and the site risk assessment before a purchase is confirmed. Ratings, standards and dimensions are quoted as printed on that sheet. Lead time, stock position and certificates available with the shipment are confirmed in the quotation, and we supply to Oman and the wider GCC region for industrial, utility and building services projects.

Related PULS products: PULS CP10.241 24V 10A 240W Single-Phase DIN Rail Power Supply, PULS QT40.241 24V 40A 960W Three-Phase DIN Rail Power Supply, PULS QS20.241 24V 20A 480W Single-Phase DIN Rail Power Supply, PULS CS10.241 24V 10A 240W Auto-Select DIN Rail Power Supply, PULS XT40.241 24V 40A 960W Semi-Regulated 3-Phase Power Supply and PULS MLY10.241 12-48V 10A Dual Diode Redundancy Module.