ST 500/44/23

Control- and isolating transformer

Version ST 500/44/23
Rated input voltage 440 Vac Rated output voltage 230 Vac Rated power VDE (DB cos phi=1) 500 VA
Version Rated input voltage Rated output voltage Rated power VDE (DB cos phi=1)
ST 20/11/24 115 Vac 24 Vac 20 VA
ST 20/11/11 115 Vac 115 Vac 20 VA
ST 20/23/12 230 Vac 12 Vac 20 VA
ST 20/11/23 115 Vac 230 Vac 20 VA
ST 20/23/24 230 Vac 24 Vac 20 VA
ST 20/23/23 230 Vac 230 Vac 20 VA
ST 20/4/23 400 Vac 230 Vac 20 VA
ST 63/11/24 115 Vac 24 Vac 63 VA
ST 63/23/12 230 Vac 12 Vac 63 VA
ST 63/23/24 230 Vac 24 Vac 63 VA
ST 63/11/11 115 Vac 115 Vac 63 VA
ST 63/23/23 230 Vac 230 Vac 63 VA
ST 63/11/23 115 Vac 230 Vac 63 VA
ST 63/4/24 400 Vac 24 Vac 63 VA
ST 63/4/42 400 Vac 42 Vac 63 VA
ST 63/4/23 400 Vac 230 Vac 63 VA
ST 63/44/23 440 Vac 230 Vac 63 VA
ST 63/69/23 690 Vac 230 Vac 63 VA
ST 100/23/12 230 Vac 12 Vac 100 VA
ST 100/23/24 230 Vac 24 Vac 100 VA
ST 100/23/23 230 Vac 230 Vac 100 VA
ST 100/4/24 400 Vac 24 Vac 100 VA
ST 100/11/24 115 Vac 24 Vac 100 VA
ST 100/4/23 400 Vac 230 Vac 100 VA
ST 100/11/11 115 Vac 115 Vac 100 VA
ST 100/69/23 690 Vac 230 Vac 100 VA
ST 100/11/23 115 Vac 230 Vac 100 VA
ST 130/11/23 115 Vac 230 Vac 130 VA
ST 130/23/24 230 Vac 24 Vac 130 VA
ST 130/23/11 230 Vac 110 Vac 130 VA
ST 130/4/23 400 Vac 230 Vac 130 VA
ST 130/69/23 690 Vac 230 Vac 130 VA
ST 160/23/24 230 Vac 24 Vac 160 VA
ST 160/23/23 230 Vac 230 Vac 160 VA
ST 130/11/24 115 Vac 24 Vac 130 VA
ST 160/4/24 400 Vac 24 Vac 160 VA
ST 130/11/11 115 Vac 115 Vac 130 VA
ST 160/4/23 400 Vac 230 Vac 160 VA
ST 160/69/23 690 Vac 230 Vac 160 VA
ST 250/11/24 115 Vac 24 Vac 250 VA
ST 250/23/12 230 Vac 12 Vac 250 VA
ST 250/23/24 230 Vac 24 Vac 250 VA
ST 250/23/42 230 Vac 42 Vac 250 VA
ST 160/11/24 115 Vac 24 Vac 160 VA
ST 250/23/23 230 Vac 230 Vac 250 VA
ST 160/11/11 115 Vac 115 Vac 160 VA
ST 250/4/23 400 Vac 230 Vac 250 VA
ST 250/4/24 400 Vac 24 Vac 250 VA
ST 160/11/23 115 Vac 230 Vac 160 VA
ST 250/44/23 440 Vac 230 Vac 250 VA
ST 250/69/23 690 Vac 230 Vac 250 VA
ST 320/23/24 230 Vac 24 Vac 320 VA
ST 320/23/23 230 Vac 230 Vac 320 VA
ST 320/4/23 400 Vac 230 Vac 320 VA
ST 250/11/11 115 Vac 115 Vac 250 VA
ST 320/69/23 690 Vac 230 Vac 320 VA
ST 400/11/23 115 Vac 230 Vac 400 VA
ST 250/11/23 115 Vac 230 Vac 250 VA
ST 400/23/24 230 Vac 24 Vac 400 VA
ST 320/11/24 115 Vac 24 Vac 320 VA
ST 320/11/11 115 Vac 115 Vac 320 VA
ST 320/11/23 115 Vac 230 Vac 320 VA
ST 400/11/24 115 Vac 24 Vac 400 VA
ST 400/11/11 115 Vac 115 Vac 400 VA
ST 400/23/23 230 Vac 230 Vac 400 VA
ST 400/4/24 400 Vac 24 Vac 400 VA
ST 400/4/23 400 Vac 230 Vac 400 VA
ST 400/69/23 690 Vac 230 Vac 400 VA
ST 500/11/23 115 Vac 230 Vac 500 VA
ST 500/23/23 230 Vac 230 Vac 500 VA
ST 500/23/24 230 Vac 24 Vac 500 VA
ST 500/23/42 230 Vac 42 Vac 500 VA
ST 500/4/23 400 Vac 230 Vac 500 VA
ST 500/44/23 440 Vac 230 Vac 500 VA
ST 500/69/23 690 Vac 230 Vac 500 VA
ST 630/23/23 230 Vac 230 Vac 630 VA
ST 630/23/42 230 Vac 42 Vac 500 VA
ST 630/4/23 400 Vac 230 Vac 630 VA
ST 630/69/23 690 Vac 230 Vac 630 VA
ST 800/11/11 115 Vac 115 Vac 800 VA
ST 800/23/23 230 Vac 230 Vac 800 VA
ST 800/4/23 400 Vac 230 Vac 800 VA
ST 800/44/23 440 Vac 230 Vac 800 VA
ST 800/69/23 690 Vac 230 Vac 800 VA
ST 1000/11/23 115 Vac 230 Vac 1,000 VA
ST 1000/23/23 230 Vac 230 Vac 1,000 VA
ST 1000/4/23 400 Vac 230 Vac 1,000 VA
ST 1000/44/23 440 Vac 230 Vac 1,000 VA
ST 500/11/11 115 Vac 115 Vac 500 VA
ST 1000/5/23 500 Vac 230 Vac 1,000 VA
ST 1000/69/23 690 Vac 230 Vac 1,000 VA
ST 1600/4/23 400 Vac 230 Vac 1,600 VA
ST 1600/69/23 690 Vac 230 Vac 1,600 VA
ST 2000/4/23 400 Vac 230 Vac 2,000 VA
ST 2000/69/23 690 Vac 230 Vac 2,000 VA
ST 2500/4/23 400 Vac 230 Vac 2,500 VA
ST 2500/69/23 690 Vac 230 Vac 2,500 VA
ST 630/11/11 115 Vac 115 Vac 630 VA
ST 630/11/23 115 Vac 230 Vac 630 VA
ST 800/11/23 115 Vac 230 Vac 800 VA
ST 1000/11/11 115 Vac 115 Vac 1,000 VA
Image of %s BLOCK Item: ST 500/44/23

Technical data for ST 500/44/23

Input
Rated input voltage 440 Vac
Tappings Input ±5 %
Rated frequency 50 - 60 Hz
Output
Rated output voltage 230 Vac
Rated power VDE (DB cos phi=1) 500 VA
Rated power VDE (KB cos phi=0.5) 1,370 VA
No-load voltage (app. x factor) 1.05
Efficiency 91.0 %
UL Derating 400 VA
Standards
Classification Control- and isolating transformer
Approvals
Approvals cURus, VDE
Environment
Ambient temperature max. 40 °C
Type of cooling self-cooling
Safety and protection
Type Open type
Insulation class VDE=B, UL=class 105
Protection index IP 00
Safety class (prepared) I
Short circuit strength non-short-circuit proof
PRI Fusing recommendation by circuit breaker with tripping characteristic type 20 x Irated related to set)
Setting range 1.00 - 1.60 A
Setting value 1.20 A
Terminal and mounting
Terminals Screw-type terminals, PE 6.3 x 0.8
Fixing method Base plate
Fixing screws M5
Measures and weights
Width 120 mm
Height 123 mm
Depth 122 mm
Weight 6.60 kg

Info on ST series

General Data
  • Insulation class B
  • Rated input voltage 115 - 690 Vac
  • Rated output voltage 12 - 230 Vac
  • Rated power 20 - 2,500 VA
  • Degree of protection IP 00
  • Efficiency up to 96 %
  • Maximum ambient temperature 40 °C
Benefits
  • Primary side ±5 % tappings for voltage adjustment
  • High power density due to a compact construction design
  • Very good switch-on behaviour thanks to reduced starting currents
  • Very good corrosion protection and low noise thanks to vacuum impregnation
  • Contact protected screw connection terminals complying with UVV BGV A3
  • Simple mounting thanks to robust metal footplate with oval slots

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