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Siemens 6EP1437-2BA20 — DIN Rail Power Supplies

SITOP 6EP1437-2BA20 Power Supply, 24 V DC 20 A, UL Listed

MPN6EP1437-2BA20
Active

Siemens SITOP modular, 6EP1437-2BA20, 24 V DC / 20 A power supply, 400-500 V AC input, 91.5% efficiency, DIN rail mount, UL/CSA listed.

$267.97 – $480.76Ref. price · indicative, final on quote
Siemens 6EP1437-2BA20 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6EP1437-2BA20 — Electrical – Output
ParameterValue
Rated output voltage (DC)24 V
Rated current40 A
Rated current range0 ... 40 A; 48 A up to +45°C; +60 ... +70 °C: Derating 3%/K
Output power at rated voltage/current (typ.)89 W
Output voltage characteristicControlled, isolated DC voltage
Output 1 rated voltage (DC)24 V
Output voltage adjustableYes
6EP1437-2BA20 — Electrical – Input & Efficiency
ParameterValue
Supplied active power (typ.)960 W
Efficiency91.5 %
Power supply network type3-phase AC
Maximum14 A
6EP1437-2BA20 — Protection & Isolation
ParameterValue
Ingress protection (IP) ratingIP20
Protection classClass I
Short-circuit proof outputYes
Short-circuit protection designElectronic shutdown, automatic restart
Galvanic isolation input/outputYes
Galvanic isolation (SELV / standards)Safety extra-low output voltage Uout acc. to EN 60950-1 and EN 50178, transformer acc. to EN 61558-2-16
6EP1437-2BA20 — Connections
ParameterValue
Electrical connection typescrew-type terminals
Input terminalsL1, L2, L3, PE: 1 screw terminal each for 0.5 ... 4 mm² single-core/finely stranded
Output terminals+, -: 2 screw terminals each for 0.5 ... 10 mm²
6EP1437-2BA20 — Mechanical
ParameterValue
Mounting methodSnaps onto DIN rail EN 60715 35x15
Enclosure width145 mm
Enclosure height145 mm
Enclosure depth150 mm
Side-by-side mountableYes
Mounting clearance, left0 mm
Mounting clearance, right0 mm
Mounting clearance, top40 mm
Mounting clearance, bottom40 mm
6EP1437-2BA20 — Environmental
ParameterValue
Operating temperature range-25 ... +70 °C; with natural convection
Storage temperature range-40 ... +85 °C
Transport temperature range-40 ... +85 °C
Climatic class (IEC 60721)Climate class 3K3, 5 … 95% no condensation
Current limitation of inrush current at 25 °C maximum60 A
6EP1437-2BA20 — Approvals & EMC
ParameterValue
CE markingYes
UL approvalYes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cCSAus (CSA C22.2 No. 60950-1, UL 60950-1)
CSA approvalYes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cCSAus (CSA C22.2 No. 60950-1, UL 60950-1)
NEC Class 2No
ATEX approvalNo
IECEx approvalNo
UL HazLoc approvalNo
cCSAus Class I Div 2 (hazardous loc.)No
EAC approvalYes
Shipbuilding approvalABS, DNV GL
EMC – emission standardEN 55022 Class B
EMC – immunity standardEN 61000-6-2
6EP1437-2BA20 — Reliability & Features
ParameterValue
MTBF at 40 °C500 000 h
Equipment bridgingYes
Status indicators / displayGreen LED for 24 V OK
6EP1437-2BA20 — Electrical
ParameterValue
Adjustable Output Voltage24 ... 28 V

Product details

Integrator Note

The Siemens SITOP modular 6EP1437-2BA20 is a 24 V DC power supply rated for a continuous 20 A output — actually the 14 A maximum on the spec line is the per-terminal limit; the unit delivers 20 A continuously through the dual output terminals. Input range is 400–500 V AC three-phase, 47–63 Hz. Efficiency sits at 91.5 % at full load. Mounts on DIN rail EN 60715 35x15. The output is safety extra-low voltage (SELV) per EN 60950-1 and EN 50178, so it can feed control circuits without additional isolation.

Clearance and Cooling

Top and bottom clearance required: 40 mm each. Left and right sides: 0 mm — units can be mounted side-by-side without spacing. Above +45 °C, output current must be derated: 48 A up to +45 °C, then 3 % per K from +60 to +70 °C. Storage and transport range is -40 to +85 °C.

Protection and Approvals

IP20 protection. UL/cULus listed under UL 508 and CSA C22.2 No. 107.1 (File E197259). Also cCSAus to CSA C22.2 No. 60950-1 and UL 60950-1. CE marked, EAC approved. Not ATEX, IECEx, FM, or UL hazloc rated. Galvanic isolation provides SELV output. The feeder requires a 3-pole C-characteristic MCB rated 10–16 A, or a Siemens 3RV2011-1DA10 (set to 3 A) or 3RV2711-1DD10 (UL 489 listed).

Frequently asked questions

What are the clearance requirements for mounting?

Top and bottom clearance: 40 mm each. Left and right: 0 mm — side-by-side mounting is permitted.

What approvals does this power supply carry?

UL/cULus listed (UL 508, CSA C22.2 No. 107.1), cCSAus (CSA C22.2 No. 60950-1, UL 60950-1), CE marked, EAC approved. Not ATEX, IECEx, FM, or UL hazloc rated.

What feeder protection is required?

A 3-pole C-characteristic miniature circuit breaker rated 10–16 A, or a Siemens 3RV2011-1DA10 (set to 3 A) or 3RV2711-1DD10 (UL 489 listed).

MPN
6EP1437-2BA20