STU 400/24

Universal control- safety isolating and isolating transformer STU

Version STU 400/24

Rated input voltage 210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac Rated output voltage 24 Vac Rated power VDE (DB cos phi=1) 400 VA

Display options

Version	Rated input voltage	Rated output voltage	Rated power VDE (DB cos phi=1)
STU 63/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	63 VA
STU 63/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	63 VA
STU 100/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	100 VA
STU 100/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	100 VA
STU 130/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	130 VA
STU 130/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	130 VA
STU 160/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	160 VA
STU 160/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	160 VA
STU 250/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	250 VA
STU 250/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	250 VA
STU 400/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	400 VA
STU 400/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	400 VA
STU 500/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	500 VA
STU 500/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	500 VA
STU 630/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	630 VA
STU 630/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	630 VA
STU 800/24	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	24 Vac	800 VA
STU 800/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	800 VA
STU 1000/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	1,000 VA
STU 1600/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	1,600 VA
STU 2000/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	2,000 VA
STU 2500/2x115	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac	2 x 115 Vac	2,500 VA

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Technical Data for STU 400/24

Input
Rated input voltage	210 Vac/230 Vac/250 Vac/ 380 Vac/400 Vac/420 Vac/ 440 Vac/460 Vac/480 Vac/ 500 Vac/520 Vac/540 Vac
Rated frequency	50 - 60 Hz

Output
Rated output voltage	24 Vac
Rated power VDE (DB cos phi=1)	400 VA
Rated power VDE (KB cos phi=0.5)	1,020 VA
No-load voltage (app. x factor)	1.06
Efficiency	91 %
UL Derating	320 VA

Approvals
Approvals	cURus, VDE

Environment
Ambient temperature max.	104.0 °F
Type of cooling	by 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 230 ±20 Vac	1.60 - 2.50 A
Setting value 230 ±20 Vac	1.9 A
Setting range 400 ±20 Vac	1.00 - 1.60 A
Setting value 400 ±20 Vac	1.1 A
Setting range 460 ±20 Vac	1.00 - 1.60 A
Setting value 460 ±20 Vac	1 A
Setting range 520 ±20 Vac	0.63 - 1.00 A
Setting value 520 ±20 Vac	0.9 A

Terminal and mounting
Fixing method	Base plate
Fixing screws	M5
Terminals Input	Screw clamp, 4 mm²
Terminals Output	Screw clamp, 4 mm²
Connection type	Tab connector, 6.3 x 0.8 mm

Measures and weights
Depth	4.02 inch
Height	4.84 inch
Width	4.72 inch
Weight	11.90 lbs

Information for STU series

General Data

Rated input voltage 210 - 540 Vac
Degree of protection IP 00
Efficiency up to 95 %
Maximum ambient temperature 104 °F / 40 °C
Insulation class B
Rated power 63 - 2,500 VA
Rated output voltage 24 - 2 x 115 Vac

Benefits

Reduced inrush current
Very good corrosion protection and low noise due to BLOCK IMPEX vacuum impregnation
Contact protected screw connection terminals complying with UVV BGV A3
Simple mounting due to robust metal footplate with oval slots
High power density due to a compact construction design
Universal input voltages 210 to 540 Vac

Standards

Control transformer
to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,
UL 5085-1/-2, CSA 22.2 No.66
Safety isolating transformer
to: VDE 0570 Teil 2-6, DIN EN 61558-2-6, EN 61558-2-6, IEC 61558-2-6, UL 5085-1/-2, CSA 22.2 No.66
Isolating transformer
to: VDE 0570 Part2-4, DIN EN 61558-2-4, EN 61558-2-4, IEC 61558-2-4, UL 5085-1/-2, CSA 22.2 No.66

Approvals

VDE, UL 5085-1/-2, CSA 22.2 No.66

Applications

As a control transformer for the electrical isolation of the input and output sides.The construction of the transformer is designed to supply control systems according to EN 60204.
As an isolating transformer for the safe electrical isolation of the input and output sides. The transformer may be used to set up protective separation as a protective measure in accordance with VDE 0100.
As a safety isolating transformer for the safe electrical isolation of the input and output sides. The transformer is suitable for creating SELV and PELV circuits because of the limit on the output voltage.

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STU 400/24

Universal control- safety isolating and isolating transformer STU

DOWNLOADS

Technical Data for STU 400/24

Information for STU series

General Data

Benefits

Standards

Approvals

Applications

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