Ex STM 295

Features/Options

  • Ex zone 1 and 21
  • Thermoplastic enclosure
  • Double insulated Schutzisoliert
  • Two Ex switch inserts in one enclosure
  • Spring-to-lock or power-to-lock principle
  • Holding force 1000 N
  • Wiring compartment
  • N.B.: Please state required approvals for Russia and North America with your order!

Note

The actuator is not included with the switches.

Product image

 

Technical data

Standards EN 60947-5-1; EN 1088;
EN 60079-0, EN 60079-1,
EN 60079-7, EN 60079-18;
EN 61241-0, EN 61241-1;
EN ISO 13849-1
Enclosure glass-fibre reinforced, shock-resistant thermoplastic,
self-extinguishing UL 94-V0
Actuator stainless steel 1.4301
Switch insert Ex 95
Degree of protection IP 64 to IEC/EN 60529
Contact material silver
Switching system slow action, positive break NC contact Zwangsöffnung
Switching elements 2 NC and 2 NO contacts with positive break, galvanically separated contact bridges
Connection M3 screw clamps
B10d(10% Load) 1 million
TM max. 20 years
Cable section max. 1.5 mm2 (incl. conductor ferrules)
Cable entries 2 x M20 x 1.5 for cable section 5 … 9 mm
Uimp 4 kV
Ui 250 V
Ithe 6 A
Ie/Ue 3 A/250 VAC; 0.25 A/230 VDC
Utilisation category AC-15, DC-13
Max. fuse rating 6 A gL/gG D-fuse
Ie/Ue solenoid 0.08 A / 24 VDC +10%/–15%
Power consumption max. 47 W (0,25s)
Ambient temperature –20 °C … +55 °C
Mechanical life > 500.000 operations
Ex marking EEx geprüft II 2G Ex demb IIC T4 Gb,
EEx geprüftII 2D Ex tD A21 IP64 T100°C
IECEx Ex demb IIC T4,
Ex tD A21 IP64 T100°C
Approvals BVS 10 ATEX E 053 X
IECEx BVS 11.0030X