
Siemens SITOP DC UPS Module/24VDC15A
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Product Description
Siemens 6EP1931-2EC21 — SITOP DC power supply. DIN-rail primary-switched regulated 24 VDC power supply for automation panels.
Technical Specifications
- Manufacturer part number (MPN)
- 6EP1931-2EC21
- EAN / GTIN
- 4025515151043
- Sales unit
- pcs
- Supply voltage at DC rated value
- 24 V
- Input voltage at DC
- 22 ... 29 V
- Adjustable response value voltage for buffer connection preset
- 22.5 V
- Adjustable response value voltage for buffer connection
- 22 ... 25.5 V; Adjustable in 0.5 V increments
- Input current at rated input voltage 24 V rated value
- 15 A; + approx. 1 A with empty battery
- Type of energy storage
- with batteries
- Design of the mains power cut bridging-connection
- Dependent on connected battery and load current, see selection table battery module and mains buffering times as well as the relevant important information notes!
- Output voltage — in normal operation at DC rated value
- 24 V
- Output voltage — in buffering mode at DC rated value
- 24 V
- Formula for output voltage
- Vin - approx. 0.5 V
- Startup delay time typical
- 1 s
- Voltage increase time of the output voltage typical
- 60 ms
- Output voltage in buffering mode at DC
- 19 ... 28.5 V
- Output current — rated value
- 15 A
- Output current — in normal operation
- 0 ... 15 A
- Output current — in buffering mode
- 0 ... 15 A
- Peak current
- 15.7 A
- Property of the output short-circuit proof
- Yes
- Charging current
- 0.35 A, 0.7 A
- Efficiency in percent — at rated output voltage for rated value of the output current typical
- 96.2 %
- Efficiency in percent — in case of operation on rechargeable battery typical
- 96 %
- Power loss [W] — at rated output voltage for rated value of the output current typical
- 14 W
- Power loss [W] — in case of operation on rechargeable battery typical
- 15 W
- Supplied active power typical
- 360 W
- Product function — reverse polarity protection against energy storage unit polarity reversal
- Yes
- Product function — reverse polarity protection against input voltage polarity reversal
- Yes
- Display version — for normal operation
- Normal operation: LED green (OK), floating changeover contact "Bat/OK" to setting "OK" ("OK" means: Voltage of the supplying power supply unit is greater than cut-in threshold set at the DC UPS module); Lack of buffer standby: LED red (a...
- Display version — in buffering mode
- Buffered mode: LED yellow (Bat), floating changeover contact "OK/Bat" to setting "Bat"; Prewarning battery voltage < 20.4 VDC: LED red (alarm), floating changeover contact "Alarm/Bat" to setting "Alarm"; Energy storage > 85%: LED green (...
- Product component PC interface
- No
- Product function communication function
- No
- Design of the interface
- without
- Galvanic isolation between input and output
- No
- Operating resource protection class
- Class III
- Protection class IP
- IP20
- Standard — for emitted interference
- EN 55022 Class B
- Standard — for interference immunity
- EN 61000-6-2
- Shipbuilding approval
- Yes
- Ambient temperature — during operation
- -25 ... +60 °C; with natural convection
- Ambient temperature — during transport
- -40 ... +85 °C
- Ambient temperature — during storage
- -40 ... +85 °C
- Type of electrical connection
- screw terminal
- Type of electrical connection — at input
- 24 V DC: 2 screw terminals for 1 ... 4 mm²/17 ... 11 AWG
- Type of electrical connection — at output
- 24 V DC: 4 screw terminals for 1 ... 4 mm²/17 ... 11 AWG
- Type of electrical connection — for rechargeable battery module
- 24 V DC: 2 screw terminals for 1 ... 4 mm²/17 ... 11 AWG
- Type of electrical connection — for control circuit and status message
- 10 screw terminals for 0.5 ... 2.5 mm²/20 ... 13 AWG
- Width × height × depth of the enclosure
- 50 × 125 × 125 mm
- Installation width × mounting height
- 50 mm × 225 mm
- Required spacing — top
- 50 mm
- Required spacing — bottom
- 50 mm
- Fastening method
- Snaps onto DIN rail EN 60715 35x7.5/15
- Fastening method — DIN-rail mounting
- Yes
- Fastening method — S7 rail mounting
- No
- Fastening method — wall mounting
- No
- Housing can be lined up
- Yes
- Mechanical data — net weight
- 0.4 kg
- Electrical accessories
- Battery module
- Other information
- Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)
- Country of origin
- Austria
Standards & Compliance
- HS Code
- 8504.90
Cross References
- EAN 4025515151043
- SAP 1000066699
- Code 8916467
Product Documentation
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Technical guides
Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 6EP1931-2EC21?
- 6EP1931-2EC21 can be ordered from cballast.com as a Siemens catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Siemens product?
- The manufacturer part number is 6EP1931-2EC21.
- What is the HS code for 6EP1931-2EC21?
- The customs tariff (HS) code for 6EP1931-2EC21 is 8504.90.
- Who manufactures 6EP1931-2EC21?
- 6EP1931-2EC21 is a Siemens product in the Electrical Components range.
- Is a datasheet available for 6EP1931-2EC21?
- Yes — the 6EP1931-2EC21 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 6EP1931-2EC21?
- The minimum order quantity is 1.
- Is 6EP1931-2EC21 available?
- Yes — 6EP1931-2EC21 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).
