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Siemens 6AG1961-3BA01-7AA0 — PLCs (Programmable Logic Controllers)

Siemens 6AG1961-3BA01-7AA0 SIPLUS 40 A Buffer

MPN6AG1961-3BA01-7AA0
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Siemens SIPLUS PS 6AG1961-3BA01-7AA0 buffer module for DC UPS, 40 A rated, conformal coating, -25…+70 °C.

Siemens 6AG1961-3BA01-7AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6AG1961-3BA01-7AA0 key specifications
ParameterValue
Type of electrical connectionscrew-type terminals
Input voltage range24 ... 28.8 V DC
Voltage curve at inputDC
Formula for output voltageVin - approx. 1 V
Supply voltage at DC rated value24 V
Design of the mains power cut Bridging-ConnectionBackup time: with 40 A load current: 200 ms; with 20 A load current: 400 ms; with 10 A load current: 800 ms; with 5 A load current: 1.6 s. Reduces the backup time by 100 ms in combination with 6EP1 437-3BA10. Maximum backup time 100 ms in combination with 6EP1 336-2BA10 (load current 20 A).
Depth of the enclosure121 mm
Width of the enclosure70 mm
Height of the enclosure125 mm
Product feature of the enclosure housing can be lined upYes
Design of the interfacewithout
Product component PC interfaceNo

All specifications

6AG1961-3BA01-7AA0 additional specifications
ParameterValue
Installation altitude at height above sea level maximum6 000 m
Ambient temperature in horizontal mounting position during operation-25 ... +70; with natural convection
Ambient condition relating to ambient temperature - air pressure - installation altitudeIn 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
Ambient temperature during storage and transport-40 ... +85
MTBF at 40 °C2 538 071 h
CE markingYes
Reference code according to IEC 81346-2RB
Top50 mm
Left0 mm
Right0 mm
Bottom50 mm
At input+: 1 screw terminal for 0.5 ... 10 mm²
At output-: 1 screw terminal for 0.5 ... 10 mm²
Rated value40 A
MountingSnaps onto DIN rail EN 60715 35x7.5/15
Other informationSpecifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)
Protection class IPIP20
For normal operationGreen LED for "supply voltage > 20.5 V"
For emitted interferenceEN 55022 Class B
For interference immunityEN 61000-6-2
Operating resource protection classClass III
Galvanic isolation between input and outputYes
Chemical resistance to commercially available cooling lubricantsYes; 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-830AYes; Conformal Coating, Class A

Product details

The 6AG1961-3BA01-7AA0: SIPLUS PS modular buffer module, conformal coated variant of the 6EP1961-3BA01, rated 40 A continuous, holds output at Vin – approx. 1 V for backup times from 100 ms to 10 s depending on load current. Designed for extended environment use: ambient temperature –25 to +70 °C with natural convection, chemical resistance to cooling lubricants and oil droplets, and derating above 2000 m altitude. Input voltage range 24...28.8 V DC; output voltage tracks input minus approx. 1 V. Galvanic isolation between input and output. MTBF at 40 °C: 2 538 071 h.

Housing snaps onto DIN rail EN 60715 35×7.5/15. Screw terminals at input and output accept 0.5…10 mm² solid or stranded. Enclosure 70 mm wide, 125 mm high, 121 mm deep; IP20. Clearance top 50 mm, bottom 50 mm, sides 0 mm — aligns with standard SIPLUS PS mounting rules.

Frequently asked questions

What are the physical clearance dimensions around this module?

Top clearance 50 mm, bottom 50 mm, sides 0 mm. Housing itself is 70 mm wide, 125 mm high, 121 mm deep.

What compliance documentation does this buffer module carry?

CE marking, emission per EN 55022 Class B, immunity per EN 61000-6-2. Protection class III.

MPN
6AG1961-3BA01-7AA0