WAGO 787-1644 Power Supply

USD 945.19

3-phase DIN-rail PSU, 24 VDC 40 A output, TopBoost, DC OK contact, IP20, 960 W nominal, adjustable 23–28.5 V

SKU Wago-787-1644 Category
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WAGO 787-1644 Power Supply

Model Identifier 787-1644
Official Part Number 787-1644
GTIN Standard 4055143259187

Technical Overview

EPSITRON Classic switched-mode DIN-rail power supply for 3-phase input with 24 VDC, 40 A output, TopBoost, and DC OK contact. Official WAGO data sheet confirms universal industrial input support, adjustable output voltage, 960 W nominal output power, IP20 enclosure protection, and integrated signaling/parallel-series capability. The unit is designed for control cabinets and secondary-side protection via circuit breakers.

Key Features

  • 3-phase switched-mode power supply
  • 24 VDC nominal output with 23–28.5 V adjustable range
  • 40 A nominal output current
  • 960 W nominal output power
  • TopBoost for secondary-side protection via circuit breakers
  • DC OK contact for status signaling
  • Natural convection cooling when horizontally mounted
  • Parallel operation supported
  • Series operation supported
  • IP20 protection type
  • DIN-35 rail mounting

24 VDC, 40 A output with TopBoost and DC OK contact for industrial control cabinets.

Technical Specification Matrix

ParameterValue
Input phase3-phase
Nominal output voltage24 VDC (SELV)
Output voltage range23–28.5 VDC adjustable
Nominal output current40 A
Nominal output power960 W
Efficiency (typ.)92%
Residual ripple≤ 30 mV peak-to-peak
Current limitation1.1 × nominal output current (typ.)
Overload behaviorConstant current
DC OK contact30 VAC/DC, 1 A
Isolation voltage (primary-secondary)4.242 kV DC
Isolation voltage (primary-PE)2.2 kV DC
Isolation voltage (secondary-PE)0.7 kV DC
Protection classI
Protection typeIP20 per EN 60529
Overvoltage categoryII
Pollution degree2
Reverse feed resistance≤ DC 35 V
Short-circuit protectionYes
Open-circuit proofYes
Parallel operationYes
Series operationYes
Ambient operating temperature-25 to +70 °C
Storage temperature-25 to +85 °C
Relative humidity5 to 96% non-condensing
Width126 mm
Height127 mm
Depth from upper-edge of DIN rail198 mm
Weight2800 g
Mounting typeDIN-35 rail
Country of originDE

Industrial Applications

1. 24 Vdc Control Cabinet Distribution

Provides regulated 24 VDC bus power for PLCs, relays, sensors, and industrial I/O in a cabinet fed from 3-phase mains.

Problem Solved

Converts industrial 3-phase supply into a stable 24 V control voltage with low ripple and high current capacity.

24 VDC40 A3-phase inputcontrol cabinetlow rippleDIN rail

2. High-Inrush Machine Subsystems

Suitable for machine sections that need short-duration overload handling and secondary-side branch protection through TopBoost.

Problem Solved

Prevents nuisance trips and improves selective protection for downstream loads under inrush conditions.

TopBoostconstant currentcircuit breaker protectionoverload behaviorindustrial automation

3. Redundant or Extended-Run DC Power Trunks

Supports parallel and series operation for architectures that require redundancy, voltage stacking, or extended DC distribution.

Problem Solved

Enables flexible power architecture without redesigning the supply topology.

parallel operationseries operation24 VDC trunkredundant powerindustrial power supply
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