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787-1602
Switched-mode power supply

Switched mode power supply; Classical; 1 phase; 24 VDC output voltage; 1 A output current; NEC Class 2; DC OK signalPrimary switched mode power supply unit Protection class II Natural convection cooling when mounted horizontally Enclosed for use in switchgear panels Switching signal with fixed contact tip (DC OK) Suitable for both parallel and serial operation Electrically isolated output voltage (SELV) according to EN 60950-1 / UL 60950-1

Switched mode power supply; Classical; 1 phase; 24 VDC output voltage; 1 A output current; NEC Class 2; DC OK signal


  • Primary switched mode power supply unit
  • Protection class II
  • Natural convection cooling when mounted horizontally
  • Enclosed for use in switchgear panels
  • Switching signal with fixed contact tip (DC OK)
  • Suitable for both parallel and serial operation
  • Electrically isolated output voltage (SELV) according to EN 60950-1 / UL 60950-1

Phases one
Nominal input voltage U i nom AC 100 … 240 V
Input voltage range AC 85 … 264 V; DC 120 … 372 V
Input voltage rating -2.5 %/V (< 95 VAC)
Nominal mains frequency range 44 … 66 Hz; 0 Hz
Input current I i ≤ 0.28 A (240 VAC); ≤ 0.49 A (100 VAC)
discharge current ≤ 0.25mA
inrush current ≤ 30 A
Power factor correction (PFC) passive
Mains failure hold-up time ≥ 120 ms (230 VAC); ≥ 20 ms (100 VAC)
Nominal output voltage U o nom DC 24V (SELV)
Output voltage range DC 23 … 28.5 V (adjustable)
Factory preset DC 24V
Rated output current I o nom 1A (24VDC); 1.2 A (< 40 °C)
Rated output power 24W
Adjustment accuracy ≤ 1%
Residual ripple ≤ 20 mV (peak-to-peak)
current limitation 1.1 x I a typical
Overload behavior constant current
Indicators 1 x LED DC OK (green)
1 x active signal output DC OK (24 VDC, 20 mA)
Operation indicator LED green (V o )
Power loss Pv ≤ 1 W (230 VAC; no load); ≤ 4 W (230 VAC; nominal load)
Max. power loss P v max. 5 W (100 VAC / 24 VDC; 1 A)
Efficiency 86%
internal fuse T 2 A / 250 V
External fuse (required) an external DC fuse required for DC input voltage
external fuse Circuit breakers 6 A, 10 A, 16 A, characteristic: B or C
Insulation voltage (PRI-SEC) DC 4.242 kV
Protection class II
Protection class IP20 (per EN 60529)
feedback voltage ≤ DC 35V
Overvoltage category II
Transient protection, primary Varistor
Overvoltage protection, secondary Internal protectiVDCe circuit
≤ 39 VDC (in case of an error)
Short circuit protection Yes
No-load safety Yes
parallel operation Yes
series connection Yes
MTBF >500000 hours
Connection type (1) Input/Output/Signaling
connection technology CAGE CLAMP®
WAGO terminal WAGO 721 Series
Single core lengths 0.08 … 2.5 mm² / 28 … 12 AWG
Fine twisted cables 0.08 … 2.5 mm² / 28 … 12 AWG
stripping length 8 … 9 mm / 0.31 … 0.35 inch
Width 22.5mm / 0.886inch
height 90 mm / 3.543 inches
Length from upper-edge of DIN-35 rail 107.5 mm / 4.232 inches
Mounting type DIN-35 rail (EN 60715)
Weight 128
Surrounding air (operating) temperature -25 … 70 °C (Device start at -40 °C type-tested)
Surrounding air (storage) temperature -25 … 85 °C
Relative humidity 5 … 96 % (no condensation permissible)
Capacity drop -3%/K (> 50 °C)
Degree of pollution 2
Climate category 3K3 (per EN 60721)
conformity mark CE
Standards/specifications EN 60950-1; EN 61204-3; EN 60335-1; UL 60950-1; UL 508; GL
Product Group 6 (Interface Electronics)
Packaging type from SAP BOX
country of origin ALSO
GTIN 4055143060417
Customs Tariff No. 85044082900

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