Ex STM 295-3G/D

Features/Options

  • Ex zone 2 and 22
  • Thermoplastic enclosure
  • Wiring compartment
  • Spring-to-lock or power-to-lock principle
  • Double insulated
  • Holding force 1000 N
Note
  • The actuator is not included in the delivery of the switches

Technical data

StandardsEN 60947-5-1; EN 60079-0;
EN 60079-15; EN 60079-31;
EN ISO 13849-1; EN ISO 14119
Enclosureglass-fibre reinforced, shock-proof thermoplastic (PA 66), self-extinguishing UL 94-V0
Switch typetype 2
Coding levellow coding
Tightening torquecover screws 0.5 … 0.6 Nm, switch inserts M3 screw clamps min. 0.6 Nm, solenoid M3.5 screw clamps min. 0.8 Nm
Degree of protectionIP 67 to IEC/EN 60529
Contact materialsilver
Switching systemslow action, positive break NC contacts
Switching elements2 NC/2 NO, 3 NC/1 NO or 4 NC/2 NO contact, galvanically separated contact bridges
Connectionscrew connection terminals
Cable cross-sectionmax. 1.5 mm² (incl. conductor ferrules)
Cable entry2 x M20 x 1.5 for
cable section 5 … 9 mm
B10d (10 % Load)1 million
TMmax. 20 years
Uimp4 kV
Ui250 V
Ithe3 A
Ie/Ue3 A/250 VAC; 0.25 A/230 VDC
Utilisation categoryAC-15; DC-13
Max. fuse rating6 A gG/gN fuse
Ie/Ue magnet0.08 A / 24 VDC +10 %/–15 %
Power consumptionmax. 47 W (0.25 s)
Max. fuse rating magnet2 A (slow blow)
Ambient temperature–20 °C … +55 °C
Mechanical life> 500 000 operations
Holding force Fmax. 1000 N
Impact energymax. 7 J
Ex marking II 3G Ex nRc IIC T4 Gc
II 3D Ex tc IIIC T100°C Dc

Stock types

Ordering details
Type code

Spring-to-lock principle
2 NC/2 NO contacts

Type   Material no.
Ex STM 295 2Ö/2S-R-3G/D 1183008
Ex STM 295 2Ö/2S-R/90°-3G/D 1184334

Spring-to-lock principle
2 NC/2 NO contacts

with manual release FE

Type   Material no.
Ex STM 295 2Ö/2S-R-FE-3G/D 1183680
Ex STM 295 2Ö/2S-R/90°-FE-3G/D 1185098

Spring-to-lock principle
3 NC/1 NO contact

with manual release FE

Type   Material no.
Ex STM 295 3Ö/1S-R-FE-3G/D 1184175
Ex STM 295 3Ö/1S-R/90°-FE-3G/D 1186458

Spring-to-lock principle
4 NC/2 NO contacts

Type   Material no.
Ex STM 295 4Ö/2S-R-3G/D 1187919

Power-to-lock principle
2 NC/2 NO contacts

Type   Material no.
Ex STM 295 2Ö/2S-A-3G/D 1183007

Power-to-lock principle
3 NC/1 NO contact

Type   Material no.
Ex STM 295 3Ö/1S-A-3G/D 1187286
Actuators
Type   Material no.
Straight actuator STM 295-B1 1183481
Type   Material no.
Angled actuator STM 295-B5 1183470
Type   Material no.
Flexible actuator STM 295-B6 1435030
Accessories
Type   Material no.
M5 triangular key 1182300