Siemens 6EP1332-2BA20 SITOP PSU100S 24V DC 2.5A Power Supply

Overview

SIEMENS SITOP PSU100S

6EP1332-2BA20 SITOP PSU100S 24V DC 2.5A Power Supply

A compact SITOP smart supply with automatic 120/230 V AC range selection, adjustable DC output and a 24 V OK signaling contact.

At a Glance

Brand	Siemens
Model	6EP1332-2BA20
Product Type	Stabilized single-phase power supply
Core Function	Converting AC mains to isolated DC power
Application	24 V DC industrial control circuits

Automatic AC range selection

Accepts 85–132 V AC or 170–264 V AC without a manual range selector.

DC reserve

Provides 2.5 A rated current and overload capability for temporary load demand.

Status contact

A green LED and normally open relay contact indicate 24 V OK.

Product Overview

6EP1332-2BA20 supplies regulated 24 V DC at 2.5 A from a single-phase AC mains connection, with automatic selection between the 120 V and 230 V input ranges.

The 32.5 mm-wide unit mounts on a standard DIN rail and includes an output-adjustment potentiometer, short-circuit protection and a relay contact for monitoring the DC supply.

Ordering focus: Size the continuous and temporary DC load, observe the input-voltage and temperature derating conditions, and reserve ventilation space above and below the supply.

Key Functions

Adjust the DC output for the control circuit

The front potentiometer adjusts the output from 22.8 to 28 V DC around the 24 V nominal value.

Support temporary load peaks

The supply provides 150% of rated output current for up to 5 seconds per minute, with the permitted continuous current depending on ambient temperature.

Monitor the 24 V rail

A green 24 V OK LED and a normally open relay contact provide local and wired status indication.

Official Specifications

Nominal AC Input	120/230 V AC; automatic range selection
AC Input Ranges	85–132 V AC and 170–264 V AC
Permissible Line Frequency	47–63 Hz
Rated Input Current	1.25 A at 120 V AC; 0.74 A at 230 V AC
Maximum Inrush Current	33 A at 25 °C
Minimum Mains Buffering	20 ms at rated output current and 93/187 V input
Rated DC Output	24 V DC; 2.5 A; 60 W
Output Adjustment Range	22.8–28 V DC via potentiometer
Temperature-Dependent Output Current	Up to 3 A at +45 °C; derating 3%/K from +60 to +70 °C
Temporary Overload Capability	150% of rated output current for up to 5 s/min
Maximum Residual Ripple and Voltage Peak	150 mV ripple; 240 mV peak
Typical Efficiency and Power Loss	85%; 10 W at rated output
DC OK Signaling Contact	Normally open relay; 60 V DC, 0.3 A rating
Output Protection	Constant-current short-circuit characteristic; overvoltage limited below 33 V for an internal fault
Input-to-Output Isolation and Protection Class	Galvanically isolated; Class I; IP20 enclosure
Operating Ambient Temperature	−25 to +70 °C with natural convection and applicable derating
Storage and Transport Temperature	−40 to +85 °C
Conductor Termination	Screw terminals for 0.5–2.5 mm² conductors
Enclosure Dimensions and Net Weight	32.5 × 125 × 120 mm; 0.32 kg
Installation Clearance	50 mm above and below; 0 mm left and right

Official source:Siemens Product Data Sheet

Frequently Asked Questions

Must I switch 6EP1332-2BA20 manually between 120 V and 230 V mains?

The supply automatically selects between its 85–132 V AC and 170–264 V AC input ranges.

Can I trim the output of 6EP1332-2BA20 above 24 V?

The front potentiometer adjusts the output between 22.8 and 28 V DC.

How much cooling space should I leave around 6EP1332-2BA20?

Leave 50 mm above and below the enclosure, while adjacent installation is permitted with no required side clearance.

Can 6EP1332-2BA20 continuously deliver 3 A at 70 °C?

Continuous 3 A operation is specified only up to +45 °C, and the output is derated by 3% per kelvin from +60 to +70 °C.

How can a PLC monitor the output condition of 6EP1332-2BA20?

Use the normally open 24 V OK relay contact within its 60 V DC and 0.3 A rating.

What reserve does 6EP1332-2BA20 provide for a brief load peak?

The supply permits 150% of rated output current for up to five seconds per minute.

Which mounting rail accepts 6EP1332-2BA20?

The enclosure snaps onto an EN 60715 DIN rail of 35 × 7.5 mm or 35 × 15 mm.

Compatibility & Ordering Notes

Before ordering 6EP1332-2BA20: Check the AC supply range, continuous DC current and transient demand, then include derating and ventilation clearances in the panel design.

Compatibility Checklist for 6EP1332-2BA20

• Connect the protective conductor with the AC input because the power supply is protection Class I.
• Use the specified 35 mm EN 60715 DIN rail and maintain 50 mm clearance above and below the unit.
• Keep the 24 V OK relay circuit within its 60 V DC and 0.3 A contact rating.
• Apply the stated temperature derating and additional output-voltage or low-input-voltage limitations when operating away from nominal conditions.
• If increasing output power by parallel operation, observe the manufacturer’s limit of two parallel supplies and use the supported arrangement.

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