BOM / RFQ

Siemens 6AG1433-2BA20-7AA0 — Power Supplies

Siemens 6AG1433-2BA20-7AA0 Power Supply, 8 A Max

Name: 6AG1433-2BA20-7AA0
Brand: Siemens
SKU: 6AG1433-2BA20-7AA0
Availability: LimitedAvailability
Author: Sensor Sully

MPN6AG1433-2BA20-7AA0

Active

Siemens SITOP 6AG1433-2BA20-7AA0, 24 V DC switched-mode power supply, max 8 A, rated 5 A, adjustable output 24–28 V DC, DIN rail mount.

$365.76Ref. price · indicative, final on quote

Add to RFQ

Siemens 6AG1433-2BA20-7AA0 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6AG1433-2BA20-7AA0 key specifications
Parameter	Value
Type of signal at output	Relay contact (NO contact, rating 60 V DC/ 0.3 A) for "24 V OK"
Type of electrical connection	screw-type terminals
Type of output voltage setting	via potentiometer; max. 120 W
Type of the power supply network	3-phase AC
Voltage curve at output	Controlled, isolated DC voltage
Adjustable output voltage	24 ... 28 V
At rated input voltage 400	0.45 A
At rated input voltage 500	0.4 A
Output voltage at DC rated value	24 V
On slow fluctuation of input voltage	0.1 %
Relative overall tolerance of the voltage	3 %
Product function output voltage adjustable	Yes

All specifications

6AG1433-2BA20-7AA0 additional specifications
Parameter	Value
Behavior of the output voltage when switching on	Overshoot of Vout < 5 %
At rated output voltage for rated value of the output current typical	14 W
Relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical	1 %
Design of Short-Circuit protection	Constant current characteristic
Property of the output Short-Circuit proof	Yes
Current limitation of inrush current at 25 °C maximum	20 A
Buffering time for rated value of the output current in the event of power failure minimum	18 ms
Supplied active power typical	120 W
Number of Parallel-Switched equipment resources for increasing the power	2
Line frequency	47 ... 63 Hz
Depth of the enclosure	120 mm
Width of the enclosure	50 mm
Height of the enclosure	125 mm
Product feature of the enclosure housing can be lined up	Yes
In horizontal mounting position during operation	-40; Startup @ -25 °C ... +70 °C; with natural convection
Installation altitude at height above sea level maximum	6 000 m
Ambient condition relating to ambient temperature - air pressure - installation altitude	In case of operation at altitudes of 2000 - 6000 m above sea level: Output power derating of -7.5 %/1000 m or reduction of the ambient temperature by 5 K/1000 m
MTBF at 40 °C	500 000 h
CE marking	Yes
Typical	6.6 A
At input	L1, L2, L3, PE: 1 screw terminal each for 0.05 ... 2.5 mm² single-core/finely stranded
At output	+, -: 2 screw terminals each for 0.2 ... 2.5 mm²
Rated range	0 ... 5 A; 6 A up to +45°C; +60 ... +70 °C: Derating 5%/K
Rated value	5 A
1 rated value	50 Hz
2 rated value	60 Hz
In the feeder	Required: 3-pole connected miniature circuit breaker 3 ... 16 A characteristic C or circuit breaker 3RV2011-1DA10 (setting 3 A) or 3RV2711-1DD10 (UL 489-listed, DIVQ)
Initial value	340 V
Mounting	Snaps onto DIN rail EN 60715 35x7.5/15
Full-Scale value	550 V
I2t value maximum	0.5 A²·s
Other information	Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)
Galvanic isolation	Safety extra-low output voltage Uout acc. to EN 60950-1 and EN 50178, transformer acc. to EN 61558-2-16
Maximum rated value	500 V
Minimum rated value	400 V
Protection class IP	IP20
Bridging of equipment	Yes
Efficiency in percent	89.5 %
Electrical accessories	redundancy module, buffer module, selectivity module, DC UPS
For auxiliary contacts	13, 14 (alarm signal): 1 screw terminal each for 0.2 ... 2.5 mm²
Mechanical accessories	Device identification label 20 mm × 7 mm, pale turquoise 3RT1900-1SB20
Response delay maximum	1.5 s
For emitted interference	EN 55022 Class B
For interference immunity	EN 61000-6-2
Load step 10 to 90% typical	4 ms
Load step 90 to 10% typical	4 ms
During storage and transport	-40 ... +85 °C
Load step 100 to 50% typical	3 ms
Load step 50 to 100% typical	3 ms
At output 1 at DC rated value	24 V
For mains harmonics limitation	EN 61000-3-2
Design of input wide range input	Yes
On slow fluctuation of ohm loading	0.1 %
Operating resource protection class	Class I
Design of the overvoltage protection	protection against overvoltage in case of internal fault Vout < 35 V
Display version for normal operation	Green LED for 24 V OK
Operating condition of the mains buffering	at Vin = 400 V
Galvanic isolation between input and output	Yes
Overcurrent overload capability in normal operation	overload capability 150 % Iout rated up to 5 s/min
Chemical resistance to commercially available cooling lubricants	Yes; incl. diesel and oil droplets in the air
Product conformity of the coating qualification and performance of electrical insulating compound for printed board assemblies according to IPC-CC-830A	Yes; Conformal Coating, Class A

Product details

Power Supply Fit: Ratings and Derating

The Siemens 6AG1433-2BA20-7AA0 is a 24 V DC switched-mode power supply with a maximum output of 8 A and a typical load of 6.6 A. The continuous rated current is 5 A at 25 °C, but you can pull 6 A up to 45 °C without derating. Above 60 °C, reduce output by 5% per Kelvin—plan your panel thermal budget accordingly. Output voltage adjusts from 24 to 28 V DC. Load step recovery is 4 ms typical. The '24 V OK' relay (NO contact, 60 V DC / 0.3 A) signals status to controls. Isolation is safety extra-low voltage (SELV) per EN 60950-1 and EN 50178, with a transformer meeting EN 61558-2-16.

Feeder Protection Required

The input must be protected by a 3-pole connected miniature circuit breaker, 3–16 A, characteristic C, or a Siemens 3RV2011-1DA10 set at 3 A (or UL 489-listed 3RV2711-1DD10). Don't skip this—it's listed as required. Input connections:, L2, L3, and PE each take one screw terminal for 0.05–2.5 mm² single-core or finely stranded wire. Output (+/-) gets two terminals each for 0.2–2.5 mm². The alarm contact (13, 14) uses one terminal each for 0.2–2.5 mm².

Mounting and Accessories

Snaps onto DIN rail EN 60715 35×7.5/15. Enclosure is 125 mm high × 50 mm wide × 120 mm deep, IP20. For auxiliary functions, compatible redundancy, buffer, selectivity modules, and DC UPS are available. Optional identification label: Siemens 3RT1900-1SB20 (20 mm × 7 mm, pale turquoise).