Properties
| Version | Buffer module, 24 V |
| Order No. | 2786250000 |
| Type | PRO DC BUFFER 24V 40A |
| GTIN (EAN) | 4064675063490 |
| Qty. | 1 items |
| Depth | 130 mm |
| Depth (inches) | 5.118 inch |
| Height | 125 mm |
| Height (inches) | 4.921 inch |
| Width | 65 mm |
| Width (inches) | 2.559 inch |
| Net weight | 1,142 g |
| Storage temperature | -40 °C...85 °C |
| Operating temperature | -25 °C...70 °C |
| Humidity | 5...95 %, no condensation |
| RoHS Compliance Status | Compliant with exemption |
| RoHS Exemption (if applicable/known) | 7a, 7cI |
| REACH SVHC | Lead 7439-92-1 |
| SCIP | 0ffa7f6e-dcfd-414c-a39f-eb67653cea98 |
| Connection system | Screw connection |
| DC current consumption |
<0.2 A @ no load
<1 A @ charging process for typ. 10s |
| DC input voltage range | 22.5 - 30 V DC |
| Input current | 0...41 A |
| Input fuse (internal) | Yes |
| Rated input voltage | 24 V DC |
| Connection system | Screw connection |
| Mains failure bridge-over time |
|
| Output current at 40 °C | 25 A |
| Output voltage | 22.2 ± 0.4 V DC / Vin-1 V(± 0.4 V) |
| Output voltage, note | Corresponds to the input voltage |
| Overload and short circuit protection | Yes |
| Overload protection | Yes |
| Parallel connection option | Yes |
| Protection against inverse voltage | Yes |
| Rated current | 40 A |
| Surge protection | 33 V…35 V |
| Degree of efficiency | ≥ 98% buffer mode |
| Housing version | Metal, corrosion resistant |
| Humidity | 5...95 %, no condensation |
| Mounting position, installation notice | Horizontal on DIN rail TS 35, top and bottom 50 mm clearance for free air flow, 10 mm clearance to neighbouring subassemblies. |
| MTBF |
|
| Protection degree | IP20 |
| Short-circuit protection |
Yes
internal |
| Storage medium | Internal condenser |
| Weight | 1,142 g |
| Interference immunity test acc. to | EN 61000-4-2, -3, -4, -5, -6 |
| Noise emission in accordance with EN55032 | Class B |
| Shock resistance IEC 60068-2-27 | 30 g in all directions |
| Vibration resistance IEC 60068-2-6 | 2.3 g (on DIN rail) |
| Insulation voltage input / earth | 0.5 kV |
| Insulation voltage output / earth | 0.5 kV |
| Pollution severity | 2 |
| Protection class | III, with no ground connection, for SELV |
| Electrical machine equipment | Acc. to EN60204 |
| Safety extra-low voltage |
SELV acc. to IEC 60950-1
PELV according to EN 60204-1 |
| Conductor cross-section, AWG/kcmil , max. | 8 |
| Conductor cross-section, AWG/kcmil , min. | 22 |
| Conductor cross-section, flexible , min. | 0.5 mm² |
| Conductor cross-section, rigid , max. | 16 mm² |
| Conductor cross-section, rigid , min. | 0.5 mm² |
| Connection system | Screw connection |
| Number of terminals | 4 (++--) |
| Reverse polarity protection | Yes, ≤31 V DC |
| Tightening torque, max. | 0.6 Nm |
| Tightening torque, min. | 0.5 Nm |
| Wire connection cross section, flexible (input), max. | 16 mm² |
| Conductor cross-section, AWG/kcmil , max. | 8 |
| Conductor cross-section, AWG/kcmil , min. | 22 |
| Conductor cross-section, flexible , max. | 16 mm² |
| Conductor cross-section, flexible , min. | 0.5 mm² |
| Conductor cross-section, rigid , max. | 16 mm² |
| Conductor cross-section, rigid , min. | 0.5 mm² |
| Connection system | Screw connection |
| Number of terminals | 4 (++ / --) |
| Reverse polarity protection | Yes, ≤31 V DC |
| Tightening torque, max. | 0.6 Nm |
| Tightening torque, min. | 0.5 Nm |
| Number of terminals | 4 (Uin OK, Ready, Active, Sgnd) |
| Wire connection cross-section, flexible (signal), max. | 1.5 mm² |
| Wire connection cross-section, flexible (signal), min. | 0.2 mm² |
| Wire connection method | PUSH IN |
| Wire cross-section, AWG/kcmil , max. | 14 |
| Wire cross-section, AWG/kcmil , min. | 28 |
| Wire cross-section, solid , max. | 1.5 mm² |
| Wire cross-section, solid , min. | 0.2 mm² |
| Status indicator | Green LED |
| Approval/Certificate/Document of Conformity |
[UL 61010 Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_307904)
[IECEx Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_308055) [ATEX Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_308056) [Declaration of Conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_236770) |
| Engineering Data |
[Quick start guide -- QSG0009 PS-Selection Guide AC Backup Guide for AC backup for power supplies](https://mdcop.weidmueller.com/mediadelivery/asset/900_246228)
[CAD data -- STEP](https://mdcop.weidmueller.com/mediadelivery/asset/900_246558) [CAD data -- STEP](https://mdcop.weidmueller.com/mediadelivery/asset/900_304988) |
| Eplan Data Portal | [Eplan data](https://dataportal.eplan.com/part-details/WEI.2786250000) |
| CADENAS eCATALOG | [CAX data](https://weidmueller-embedded.partcommunity.com?catalog=weidmueller_qs&part=2786250000) |
| WSCAD Universe | [WSCAD data](https://wscaduniverse.com/part-detail?manufacturerId=88&type=0&partNumber=2786250000&norm=0) |
| User Documentation | [Instruction sheet](https://mdcop.weidmueller.com/mediadelivery/asset/900_236699) |
| Catalogues | [Catalogues in PDF-format](LINK/Catalog.html) |
| ETIM 6.0 | EC002850 |
| ETIM 7.0 | EC002850 |
| ETIM 8.0 | EC002850 |
| ETIM 9.0 | EC002850 |
| ECLASS 9.0 | 27-04-06-92 |
| ECLASS 9.1 | 27-04-92-01 |
| ECLASS 10.0 | 27-04-06-92 |
| ECLASS 11.0 | 27-04-06-92 |
| ECLASS 12.0 | 27-04-06-92 |
| ECLASS 13.0 | 27-04-06-92 |
| ECLASS 14.0 | 27-04-06-92 |
| Approvals |     |
| ROHS | Conform |
| UL File Number Search | [UL Website](LINK/UL_search.html) |
| Certificate no. (cULus) | E258476 |