2025/10/29 6EP1437-2BA20, Sales records with pictures and video

2025년 10월 31일

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What is the Siemens SITOP PSU300S (6EP1437-2BA20)?

The 6EP1437-2BA20 is the Siemens SITOP PSU300S — a 40 A / 24 V DC industrial power supply (960 W) that takes three-phase 400–500 V AC at 50/60 Hz (2.0–1.7 A input) and holds the 24 V rail from −25 °C up to 70 °C ambient, derated above 60 °C. The units photographed here are Romanian-built originals in their sealed Siemens cartons, a set of five (about 3.5 kg each), every label reading SITOP PSU300S / Power Supply 电源 / 1P 6EP1437-2BA20 / S YSU/R7A8L98UC with TESTED and the Product State box checked. The label carries the full approval row — cULus Listed 31UB, UKCA, CE, EAC (DNV·GL), India BIS IS 13252 — with Siemens AG Österreich, AT-1210 Vienna as the importer line and Made in Romania 罗马尼亚制造 at the base. They passed through the Koeed warehouse on 29 October 2025 as new original stock with a one-year warranty; the thirteen photos and video below show them as received.

3 min readContent reviewed 6 October 2026

Part details

Siemens SITOP PSU300S 6EP1437-2BA20, per nameplate and record
Field	Value
Manufacturer	Siemens — made in Romania; importer line Siemens AG Österreich, AT-1210 Vienna
Product	SITOP PSU300S power supply, Power Supply 电源
Ordering data	1P 6EP1437-2BA20; S YSU/R7A8L98UC
Input	3 AC 400–500 V, 2.0–1.7 A, 50–60 Hz
Output	DC 24 V, 40 A (960 W), pluggable terminal blocks
Ambient	−25 … 70 °C (output derated above 60 °C)
Front panel	OUTPUT DC 24V/40A terminal row, DC OK indicator window, INPUT 3AC 400-500V 50/60Hz marking; top-side rail-release handle
Build / test	Product State X4 5 6 (box checked); TESTED; QR code
Certification	cULus Listed 31UB (IND. CONT. EQ.); UKCA (Importer UK: Siemens plc, Manchester M20 2UR); CE; EAC (DNV·GL); IS 13252, BIS R-41183539; WEEE mark
Packaging	Five Siemens cartons with Original Packaging seals
Quantity / weight	5 units, about 3.5 kg each (record)
Condition	New in original packaging (per intake record); one-year warranty
Intake recorded	29 October 2025

Scroll sideways to see the full table.

Why the PSU300S 40 A

The PSU300S line is Siemens' mid-range 24 V workhorse: wide three-phase input tolerance (400–500 V AC, so the same unit serves 400 V and 500 V networks), a stiff 40 A rail for dense I/O and drive-peripheral panels, and the extended −25…70 °C window that keeps cabinet designs simple in hot plants. The pluggable output blocks mean a swap takes minutes — pull the terminal plugs, release the rail handle, lift the unit out — and the DC OK window gives the panel a quick health read at a glance. With the Product State box and TESTED mark on the label, these five are one consistent build (YSU/R7A8L98UC across the set), which matters when paralleling or stocking spares: five identical units behave like five identical units.

Photos and video

All images below are original warehouse photos of the exact units covered by this record, taken before dispatch. Click any photo to view it full size.

PSU300S with nameplate — First unit: galvanised steel body, grey top, side grille, and the full nameplate — SITOP PSU300S, 1P 6EP1437-2BA20, Made in Romania, TESTED.

Front grille close-up — Front grille: the two-piece ventilation screen over the electronics — you can see the fan-free heatsink design through it.

Five cartons in a row — All five cartons: identical Siemens labels — SITOP PSU300S, 6EP1437-2BA20, Made in Romania — one box per unit.

Carton corner — Carton detail: sharp corners and the top label intact — factory-fresh packaging.

Side with PSU300S band — Side view: the blue SITOP PSU300S band along the top edge, steel case and grille, release handle at the top.

Front face with terminals — Front face: SITOP PSU300S band and SIEMENS print, OUTPUT terminal row and DC OK window at the bottom, rail-release handle on top.

Output terminals on top — Top edge: the pluggable OUTPUT DC 24V/40A terminal blocks seated in their sockets, INPUT 3AC 400-500V 50/60Hz printed beside.

Rear grille — Rear face: the matched grille and the lower connector row seen through it.

Original Packaging seal — Carton with the ORIGINAL PACKING seal across the flap — box unopened until this photo session.

INPUT marking and nameplate — INPUT 3AC 400-500V 50/60Hz marking above the input terminal blocks; nameplate beside with the full data block.

Nameplate in full: SIEMENS, SITOP PSU300S, Power Supply 电源, 1P 6EP1437-2BA20, S YSU/R7A8L98UC, Input 3AC 400-500V | 2,0-1,7A | 50-60Hz, Output DC 24V | 40A, Temp −25…70°C, Product State X4 5 6 TESTED, cULus 31UB, UKCA, CE, EAC DNV·GL, BIS R-41183539, Siemens AG Österreich AT-1210 Vienna, Made in Romania.

Rear with DIN clip — Rear: the 35 mm DIN-rail clip and mounting keyholes — rail or panel, both options from the same back plate.

Nameplate full panel — The nameplate panel in place: every field legible at arm's length — the identity of the unit in one photo.

Inspection video of this PSU300S set, recorded at the Koeed warehouse on 29 October 2025.

For the Siemens board side of the same cabinet, see the 6RY1803-1DA02 power interface boards — new in original Siemens boxes, documented the same way.