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WAGO
Interface Electronics
Power Supplies
787-3861/050-1000
WAGO
Power Supplies
787-3861/050-1000
Product Model
787-3861/050-1000
Product ID
47019
Stock on Request
Last updated: 8/29/2026
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Key Features
1
Feature
Space-saving design with one channel, ideal for compact installations.
2
Feature
Reliably trips in the event of an overload or short circuit on the secondary side, ensuring safety.
3
Feature
Supports time-delayed channel switching to prevent power supply overload due to total inrush current.
4
Feature
Features a status signal with adjustable single or group message and remote input for control.
5
Feature
High efficiency with minimal power loss (≤ 0.4 W) and a long MTBF of 1,168,394 hours.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Note
The device is designed for use in SELV circuits.
Isolation voltage (connectors housing)
DC 1.5 kV
Protection class
III
Protection type
IP20; per EN 60529
Reverse voltage protection
No
Transient suppression (primary)
Suppressor diode (33 V)
Parallel operation of single channels
Not permitted
Series operation
No
MTBF
1,168,394 h
Number of jumper slots
8
Connection technology
Push-in CAGE CLAMP®
WAGO connector
WAGO 857 Series
Solid conductor
0.08 … 2.5 mm2 / 26 14 AWG
Fine-stranded conductor
0.34 2.5 m㎡/ 22 14 AWG
Strip length
9 10 mm / 0.35 0.39 inches
Note (conductor cross-section)
Depending on the output current, use the conductor cross-sections tested and approved by UL:26 14 AWG (0.5 A)
Width
6 mm / 0.236 inches
Height
94 mm / 3.701 inches
Depth from upper-edge of DIN-rail
97.8 mm / 3.85 inches
Mounting type
DIN-35 rail
Fire load
0.631MJ
Weight
55.6g
Ambient temperature (operation)
-25 … +70 °C
Ambient temperature (storage)
-40 … 85 °C
Relative humidity
10 95 % (no condensation permissible)
Derating
No derating
Operating altitude
≤ 2000 m (a.s.l.)
Conformity marking
CE; UKCA
Standards/specifications
EN 61000-6-2
ETIM 9.0
EC001440
ETIM 8.0
EC001440
ECCN
NO US CLASSIFICATION
PU (SPU)
1 pcs
Packaging type
Bag
Country of origin
IN
Customs tariff number
85363010900
CAS-No.
11120-22-2
REACH Candidate List Substance
Diboron trioxide
RoHS Compliance Status
Compliant,With Exemption
RoHS Exemption
6(c)
SCIP notification number (Austria)
24e753d8-e92c-4dd1-8f44-291c22790dbe
SCIP notification number (Belgium)
a3a486a0-6aa9-4a6a-9f97-4c9ae50f4549
SCIP notification number (Bulgaria)
023fb22e-8ca1-4565-9012-b1e2845be79b
SCIP notification number (Czech Republic)
78145795-59ba-4765-a65d-2f15c896aac5
SCIP notification number (Denmark)
d2e8599d-0b42-469b-aa4b-8250887fd1e4
SCIP notification number (Finland)
a9415819-e0cb-41e7-b540-d66f134f87c2
SCIP notification number (France)
89f46946-4f4b-4ddf-8ae1-738ad2dfcfa3
SCIP notification number (Germany)
49c59e8f-764e-42d9-a6ef-b3c07542769a
SCIP notification number (Hungary)
410310e5-087e-4f84-9f6b-08a174f07839
SCIP notification number (Italy)
e2b26cb0-6785-4cf2-be42-2ad5402a0919
SCIP notification number (Netherlands)
aa967410-4dbf-40f9-b870-9162d2f25bf4
SCIP notification number (Poland)
6d76d5f7-7a40-4bc6-8975-88f3945ddbe3
SCIP notification number (Romania)
29ac3998-dfbb-4adb-bfa5-5b77641722e6
SCIP notification number (Sweden)
53913ed9-45a0-4bc6-8a8f-212e0d5dee32
Nominal input voltage [V]
DC 24 V
Input voltage range
DC 18 30 V
Number of Channels
1
Nominal output voltage [V]
1 x DC 24 V
Output voltage range
DC 18 30 V (Ue voltage drop)
Voltage drop
≤ 40 mV
Nominal output current Io nom
1 x 0.5 A (fixed setting)
Default setting
switched off
Trip time
4 ms 100 s (load-dependent)
Switch-on behavior
Time-delayed channel switching (load-dependent, min. 0 ms/max. 500 ms)
Current limitation
No
Signaling
1 x Status LED (green/yellow/red)
Operation status indicator
Green LED (channel OK)
Remote input
1 x Control input (15 30 VDC (active high); 0 5 VDC (active low); max. 0.015 A)
Power loss Pl
≤ 0.4 W (no load)
Efficiency (typ.)
96 %
Internal fuse
T 4 A
Overvoltage category
II
Pollution degree
2
WAGO 787-3861/050-1000 Electronic Circuit Breaker - 24VDC, 0.5A, NEC Class 2 | INDSLT
