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PRODUCT DESCRIPTION
6EP3331-6SB00-0AY0 supplies stabilized DC control power
Siemens 6EP3331-6SB00-0AY0 is a LOGO!POWER stabilized power supply rated 24 V DC and 1.3 A. It accepts a nominal 100 to 240 V AC input and supplies up to 31.2 W for compatible low-voltage control equipment. It is a power supply, not a programmable controller.
The output can be adjusted from 22.2 to 26.4 V. Cabinet design must account for the actual connected load, thermal derating and the documented mounting clearances. Siemens also describes engineered parallel and redundant supply arrangements; these require the specified wiring and protective measures.
The output can be adjusted from 22.2 to 26.4 V. Cabinet design must account for the actual connected load, thermal derating and the documented mounting clearances. Siemens also describes engineered parallel and redundant supply arrangements; these require the specified wiring and protective measures.
BEFORE YOU BUY
Confirm the cabinet power design
ACTUAL APPLICATIONS
6EP3331-6SB00-0AY0 supports engineered DC supply arrangements
The Siemens LOGO!Power manual describes stabilized load supply, increased-power parallel operation and diode-decoupled redundancy. Each arrangement needs a verified load budget, suitable protection and the specified wiring.
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01 · CONTROL POWER
Supply a low-voltage control circuit
Convert a compatible line supply to stabilized 24 V DC for the connected control load. Check the total continuous demand, startup behavior and cable voltage drop, and retain the ventilation space specified for the chosen mounting position. -
02 · LOAD SHARING
Increase the available DC capacity
Use two matching supplies in the documented parallel arrangement when one unit cannot cover the load. Match their output settings, use equal branch wiring and switch their inputs together; verify load sharing before releasing the circuit. -
03 · REDUNDANT SUPPLY
Maintain power after one supply fails
For a redundancy design, size the surviving supply for the complete required load and decouple the positive outputs with suitable diodes. Siemens recommends separate line-side fusing; evaluate the loss of either supply during commissioning.
Technical specifications for 6EP3331-6SB00-0AY0
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Product Model6EP3331-6SB00-0AY0
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Product ParametersStabilized DC Power Supply
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In stock1 unit
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ManufacturerSiemens
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Nominal input voltage100 to 240 V AC
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Permissible AC input85 to 264 V AC
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Permissible DC input110 to 300 V DC
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Input frequency47 to 63 Hz
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Rated DC output24 V DC
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Rated output current1.3 A
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Rated output power31.2 W
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Output adjustment range22.2 to 26.4 V
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Mains bufferingMinimum 40 ms at 187 V AC and rated load
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Maximum inrush current25 A at 25 degrees C
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Output rise timeTypical 100 ms
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Output connectionTwo positive and two negative screw terminals
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Protection classClass II; protective-earth connection not required
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Ingress protectionIP20
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Thermal output derating2% per kelvin from 55 to 70 degrees C
View all additional
Alternative Names
6EP3331-6SB00-0AY0
Siemens LOGO!POWER 24 V 1.3 A
LOGO!POWER Stabilized DC Supply
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
LOGO!POWER SUPPLY ARCHITECTURE
Match the supply to the load and cabinet conditions
Siemens 6EP3331-6SB00-0AY0 is a LOGO!POWER stabilized power supply rated 24 V DC and 1.3 A. It accepts a nominal 100 to 240 V AC input and supplies up to 31.2 W for compatible low-voltage control equipment. It is a power supply, not a programmable controller.
Reserve adequate current capacity for the connected loads and check the permitted mounting orientation. Above 55 degrees C the manual specifies output-current derating; raising output voltage above 24 V also requires a reduced current budget.
Use the documented terminal identification and upstream protection. Parallel operation for increased power and diode-decoupled redundancy are distinct engineered arrangements, not interchangeable wiring shortcuts.
Features:
- Rated output: 24 V DC, 1.3 A
- Verify load demand and ventilation
- Check input protection and terminal polarity
The Siemens 6EP3331-6SB00-0AY0 requires the load budget, input protection and mounting conditions to be checked during system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Match the complete 6EP3331-6SB00-0AY0 article number and the 24 V / 1.3 A rating before selecting a spare. A similar LOGO!POWER housing may contain a different output-voltage or current variant.
Record the output adjustment, branch wiring, protective devices and cabinet temperature. For parallel or redundant installations, preserve the intended current-sharing or diode-decoupling arrangement.
After a controlled, de-energized replacement, verify polarity and terminal security before energizing. Check the actual loaded output voltage and the behavior of the connected equipment; do not rely on a green LED alone.
Features:
- Match output voltage and current capacity
- Record the original voltage adjustment
- Verify loaded operation and protection
The Siemens 6EP3331-6SB00-0AY0 stabilized power supply requires replacement verification of output rating, adjustment, terminal connections and thermal load budget before return to service.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: These documents identify the exact LOGO!POWER article and provide applicable Siemens technical and installation extracts. Check the full official manual for the selected mounting and supply arrangement.
Features:
- Available Siemens document references are confirmed before order
- Check the selected mounting orientation and current derating
- Accessories are supplied only when listed in the quotation
Documentation for the Siemens 6EP3331-6SB00-0AY0 power supply documentation must match the output rating and installed supply arrangement; confirm manual availability in the written quotation.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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01
Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size6.70 × 9.60 × 5.60 cm
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Shipping weightApprox. 0.12 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8504401400
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OriginRomania
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
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Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 6EP3331-6SB00-0AY0
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Why must the load current be reduced when I raise the output above 24 V?
The voltage adjustment does not increase the rated active power. Siemens requires the output current to be reduced above 24 V so that the rated power is not exceeded. Check the resulting load budget at the selected voltage before commissioning. -
Does a green output LED prove that every downstream circuit has the correct voltage?
No. The green LED indicates that the power-supply output is OK. Voltage drop in cables and protective components can still affect the load. Measure at the intended load terminals under the actual operating conditions. -
What happens when a connected load exceeds the current limit?
The manual describes a constant-voltage output up to the current limit. During overload the output voltage and current are reduced; this is not a normal switched-off state. Check the load and any downstream protection before repeatedly restarting equipment. -
Can two units share a load simply by joining their output wires?
For increased power, Siemens requires the same type, matching no-load output voltages within 0.2%, equal cable lengths and cross-sections, and simultaneous line-side switching. Apply the complete parallel-connection instructions rather than assuming equal current sharing. -
How is a redundant pair different from a higher-current parallel pair?
Redundancy must leave enough capacity after one supply fails. Siemens requires diode decoupling of the positive outputs to prevent a secondary fault from loading the remaining supply. Account for diode losses and the surviving unit capacity in the design. -
Which upstream circuit-breaker characteristic does the manual recommend?
For this exact model, the manual recommends a B-characteristic breaker from 6 A or a C-characteristic breaker from 2 A. Final selection must also satisfy the installation wiring and applicable protection requirements; the internal fuse is not a substitute for the installation design. -
Does a DC-fed installation use different input terminals?
No. For the documented 110 to 300 V DC input range, Siemens instructs connecting the positive conductor to L1 and the negative conductor to N. Isolate the input and verify the device markings before wiring. -
What is the acceptance check for a spare installed in a hotter cabinet?
Check the actual load and installation temperature, not only the 1.3 A nameplate rating. The manual specifies output-current derating of 2% per kelvin from 55 to 70 degrees C. Confirm mounting orientation and clearances against the applicable derating diagram.
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