PRO DC BUFFER 24V 40A
PRO DC BUFFER 24V 40A
Derating curve
Temperature Derating
PRO DC BUFFER 24V 40A
Block diagram
Block Diagram
PRO DC BUFFER 24V 40A
Block diagram
Single Operation
PRO DC BUFFER 24V 40A
Block diagram
Parallel Operation

PRO DC BUFFER 24V 40A

Buffer module, 24 V

Produkt ID 2786250000
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Approvals General ordering data Dimensions and weights Temperatures Environmental Product Compliance Input Output General data EMC / shock / vibration Insulation coordination Electrical safety (applied standards) Connection data (input) Connection data (output) Connection data (signal) Signalling Product images Classifications

Approvals

Approvals
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319222/-S800/-T1z1mm-S80) 
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319227/-S800/-T1z1mm-S80) 
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319228/-S800/-T1z1mm-S80) 
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319258/-S800/-T1z1mm-S80) 
ROHS
Conform 
UL File Number Search
[UL Website](https://database.ul.com/cgi-bin/XYV/cgifind/LISEXT/1FRAME/gfilenbr.html) 
Certificate no. (cULus)
E258476 

General ordering data

Version
Buffer module, 24 V 
Order No.
2786250000 
Type
PRO DC BUFFER 24V 40A 
GTIN (EAN)
4064675063490 
Qty.
1 Styk

Dimensions and weights

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

Temperatures

Storage temperature
-40 °C...85 °C 
Operating temperature
-25 °C...70 °C 
Humidity
5...95 %, no condensation 

Environmental Product Compliance

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 

Input

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 

Output

Connection system
Screw connection 
Mains failure bridge-over time
  • Mains failure bridge-over time, min.:
    200 ms
  • Input voltage type:
    DC
  • Input voltage:
    24 V
  • Output current:
    40 A
  • Output voltage:
    22,2 V
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 

General data

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
  • According to Standard:
    SN 29500
  • Operating time (hours), min.:
    2.500.000 h
  • Ambient temperature:
    25 °C
  • Input voltage:
    24 V
  • Output power:
    960 W
  • Duty cycle:
    100 %
Protection degree
IP20 
Short-circuit protection
Yes 
internal 
Storage medium
Internal condenser 
Weight
1.142 g

EMC / shock / vibration

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 coordination

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 safety (applied standards)

Electrical machine equipment
Acc. to EN60204 
Safety extra-low voltage
SELV acc. to IEC 60950-1 
PELV according to EN 60204-1 

Connection data (input)

Conductor cross-section, AWG/kcmil , max.
8 AWG
Conductor cross-section, AWG/kcmil , min.
22 AWG
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

Connection data (output)

Conductor cross-section, AWG/kcmil , max.
8 AWG
Conductor cross-section, AWG/kcmil , min.
22 AWG
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

Connection data (signal)

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 mm²
Wire cross-section, solid , max.
1,5 mm²
Wire cross-section, solid , min.
0,2 mm²

Signalling

Status indicator
Green LED 

Product images

Classifications

ETIM 6.0
EC002850 
ETIM 7.0
EC002850 
ETIM 8.0
EC002850 
ETIM 9.0
EC002850 
ETIM 10.0
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 
ECLASS 15.0
27-04-06-92