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Siemens 6EP1933-2NC01 — Power Supplies

Siemens 6EP1933-2NC01 Buffer Module, 168 W, IP65

MPN6EP1933-2NC01

Siemens 6EP1933-2NC01 buffer module, 168 W active power, 24 V DC output, IP65 enclosure, screw mounting.

$873.00Ref. price · indicative, final on quote
Siemens 6EP1933-2NC01 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6EP1933-2NC01 key specifications
ParameterValue
Type of energy storagewith capacitors
Type of electrical connectionPlug-in connection
Input voltage range22.5 ... 29 V DC
Voltage curve at inputDC
Formula for output voltage24 V ± 3 %
Supply voltage at DC rated value24 V
Output voltage in buffering mode at DC24 ... 24.7 V
Voltage increase time of the output voltage typical25 ms
Input current at rated input voltage 24 v rated value7 A; + approx. 2 A with empty energy storage (capacitor)
Adjustable response value voltage for buffer connectionpermanently set
Adjustable response value voltage for buffer connection preset22.5 V
Reverse polarity protection against input voltage polarity reversalYes

All specifications

6EP1933-2NC01 additional specifications
ParameterValue
At rated output voltage for rated value of the output current typical5.2 W
Peak current22.5 A
Charging current2 A
Adjustable charging current maximum notepermanently set
Supplied active power typical168 W
Design of the mains power cut Bridging-Connection7 A for 49 s or 5 A for 68 s or 3 A for 108 s or 1 A for 351 s
Depth of the enclosure80 mm
Width of the enclosure400 mm
Height of the enclosure80 mm
Product feature of the enclosure housing can be lined upNo
Design of the interfaceUSB
Product component PC interfaceYes
MTBF at 40 °C500 000 h
CE markingYes
UL approvalNo
EAC approvalYes
Reference code according to IEC 81346-2RB
Environmental category according to IEC 60721Climate class 3K3, 5 … 95% no condensation
Left0 mm
Right0 mm
C-TickNo
DNV GLNo
At inputvia connector set
At outputvia connector set
Rated value7 A
During storage-40 ... +70 °C
During operation0 ... 55 °C; with natural convection
During transport-40 ... +70 °C
MountingScrew mounting
In buffering modeBuffered mode: LED yellow (BAT); Prewarning buffer end after expiry of 80% of the available buffer time: LED red (ALARM); Energy storage > 85%: LED green (CAP. > 85%)
Other informationSpecifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)
In normal operation0 ... 7 A
Protection class IPIP65
For normal operationNormal operation: LED green (OK); Lack of buffer standby: LED red (ALARM); Energy storage > 85%: LED green (CAP. > 85%)
Electrical accessoriesConnector set
For emitted interferenceEN 55022 Class B
For interference immunityEN 61000-6-2
Startup delay time typical0.6 s
Energy content of energy storage5 kW.s
Operating resource protection classClass III
In buffering mode at DC rated value24 V
In normal operation at DC rated value24 V
Galvanic isolation between input and outputNo
Reverse polarity protection against energy storage unit polarity reversalYes

Product details

What this buffer module does

The Siemens 6EP1933-2NC01 is a buffer module that sits between a 24 V DC power supply and the load. It provides 168 W of active power at a regulated 24 V ±3% output to ride through input voltage dips or short interruptions. The input accepts 22.5 to 29 V DC, and the module delivers up to 7 A continuous with a peak capability of 22.5 A.

IP65 and mounting for wet environments

The enclosure carries an IP65 rating, so the module withstands hose-down and dust ingress — it belongs in a washdown zone or a wet well, not a climate-controlled cabinet. Mounting is via screw fixing, not DIN rail, with a 400 mm wide, 80 mm deep, 80 mm high footprint. Connections are plug-in using the supplied connector set.

Frequently asked questions

What compliance documentation does Siemens provide for this module?

The module carries CE marking and EAC approval. It meets EN 55022 Class B for emitted interference and EN 61000-6-2 for interference immunity.

MPN
6EP1933-2NC01