The Block STU 160/24 is a versatile control, isolation, and safety transformer manufactured by Variac, offering outputs ranging from 210 V AC to 540 V AC and a 24 V AC, 160 VA specification. Its main attributes include a robust design for applications requiring voltage transformation and industrial automation. Commonly used in mains power systems, it ensures safety and reliability in machine control circuits.
| Connection |
Screw terminal |
| Design type |
open |
| Dim |
(L x W x H) 88 x 96 x 105 mm |
| Efficiency |
87% |
| Fitting method |
Base plate |
| Frequency |
50 - 60Hz |
| Height |
105mm |
| Input voltage (number x voltage) |
1 x 210 V AC, 230 V AC, 250 V AC, 380 V AC, 400 V AC, 420 V AC, 440 V AC, 460 V AC, 480 V AC, 500 V AC, 520 V AC, 540 V AC |
| Insulation class |
VDE = B, UL = class 105 |
| Length |
88mm |
| Max. ambient temperature |
+40°C |
| Misc Attribute |
STU 160/24 |
| Mounting Type |
L-piece |
| No. of inputs |
1 |
| No. of outputs |
1 |
| Output voltage |
24V AC |
| Output voltage (number x voltage) |
1 x 24 V AC |
| Power |
160VA |
| Primary Voltage |
210 / 230 / 250 / 380 / 400 / 420 / 440 / 460 / 480 / 500 / 520 / 540V |
| Protection class |
I |
| RoHS-compliant |
Yes |
| Standards |
VDE 0570 Part 2-4, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-4, UL 5085-1/-2, CSA 22.2 No.66 |
| Test mark |
cULus recognized |
| Type |
Control transformer |
| Weight |
2.80kg |
| Width |
96mm |
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