XTO Transformers

Transformers of the XTO series designed for transformation to low voltage the requirements of SELV power supply. They can be placed in enclosures with I M2 resp. II 2G / II 2D declaration and installed in areas with the risk of explosion of flammable gases, vapours, dust and explosives. The transformer has both the primary and the secondary windings conductors are loosely brought out. They are terminated on terminals or directly connected to an Ex component terminals inside enclosure. The transformer is not designed as short circuit resistant, so the primary and secondary windings must be protected against overload and short circuit.

XTO 250 Transformer 250 VA
  • Size: 120 x 145 x 100 mm (a x b x c)
  • Fixing holes pitch: 105 x 125 mm (e1 x e2)
  • Fixed by 4 x M5 screws
  • Nominal power output 250 VA
  • Nominal voltage 230 / 24 V (prim./sec.)
  • Max. secondary current 6,3 A
XTO 500 Transformer 500 VA
  • Size: 150 x 185 x 120 mm (a x b x c)
  • Fixing hole spacing: 125 x 165 mm (e1 x e2)
  • Secured by screws sized 4 x M5
  • Nominal power output 500 VA
  • Nominal voltage 230 / 24 V (prim./sec.)
  • Max. secondary current 10 A
XTO 557 Transformer 557 VA
  • Size: 105 x 150 x 152 mm (a x b x c)
  • Fixing hole spacing: 85 x 105 mm (e1 x e2)
  • Secured by screws sized 4 x M6
  • Nominal power output 557 VA
  • Nominal voltage 230 / 3 x 24 V (prim./sec.)
  • Max. secondary current 3 x 6,3 A
Technical data

Basic overview

  • Explosion protection I M2 Ex eb I Mb / II 2G Ex eb II Gb
  • Zone 1, 2 - SNM 1, 2
  • Ambient temperature -55°C up to +110°C

Electrical data

  • Nominal voltage 230 / 24 V *
  • Rated power output 250, 500, 557 VA
  • Max. secondary current Acc. to specific make
  • * Other voltages upon request
Files to download

User manuals

User manual_XTO_CZ
Explosion-proof transformers
pdf 598 KB Download

Certificates

FTZÚ 07 ATEX 0033U_XTO_CZ
Explosion-proof transformers
pdf 635 KB Download
FTZÚ 07 ATEX 0033U_XTO_EN
Explosion-proof transformers
pdf 1222 KB Download
FTZÚ 07 ATEX 0033U_XTO_RU
Explosion-proof transformers
pdf 865 KB Download

Declarations of Conformity

Certificate of Conformity_XTO
Explosion-proof transformers
pdf 184 KB Download

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