Ex STM 298-3G/D

  • Ex zone 2 and 22
  • Metal enclosure
  • Wiring compartment
  • Spring-to-lock or power-to-lock principle
Notes
  • 1 ATEX cable gland is included in delivery
  • The actuator is not included in the delivery of the switches

Technical data

Applied standardsEN 60947-5-1; EN 60079-0,
EN 60079-15, EN 60079-31;
EN ISO 13849-1; EN ISO 14119
Enclosuredie-cast alloy
Switch typetype 2
Coding levellow coding
Degree of protectionIP 67 to IEC/EN 60529
Mechanical life1x106 operations
Ambient temperature–20 °C … +75 °C
Degree of pollution3
Mounting positionany
Actuating speed Vmax. 20 m/min
Extraction force (not locked)30 N
Retention force20 N
Actuating forcemax. 35 N
Operation cyclesmax. 1200/h
Switching systemslow action
Contact materialSilver, gold flashed
Cable entry3 x M20 x 1.5 (incl. 1 cable gland)
Clamping range6,5 … 12 mm
Cable cross-section0.34 … 1.5 mm² (flexible/fixed)
Rated operating isolation voltage Ui50 V
Rated impulse withstand voltage Uimp2.5 kV
Conditional short-circuit current100 A
Switching voltagemin. 12 V at 10 mA
Utilisation categoryAC-15; DC-13
Rated operating current/voltage Ie/Ue4 A/50 VAC; 4 A/24 VDC
Switching currentmin. 1 mA at 24 V
Max. fuse rating4 A gG fuse (IEC 60269-1)
Conventional thermal current Ithe4 A
Solenoid operating voltage Us24 VDC (+10%/–15%)
Power consumption8 W
Switch-on time ED100 %
Locking force FmaxActuator straight: 3000 N
Actuator angled: 1500 N
Actuator flexible: 3000 N
Locking force FZh(FZh = Fmax/1.3) = 2300 N
B10d (10 % load)12 million
Ex marking II3G Ex nR IIB T4 Gc X
II3D Ex tc IIIC T110°C Dc X

Ordering details

Spring-to-lock principle, 1 NC + 2 NC/1 NO contacts

Type   Material no.  
Type    Material no.   
Ex STM 298 01/12 R-3G/D stock type Standard versions, in stock or available at short notice 1273831
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Spring-to-lock principle, 1 NC/1 NO + 2 NC contacts

Type   Material no.  
Type    Material no.   
Ex STM 298 11/02 R-3G/D stock type Standard versions, in stock or available at short notice 1331263
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Power-to-lock principle, 1 NC + 2 NC/1 NO contacts

Type   Material no.  
Type    Material no.   
Ex STM 298 01/12 A-3G/D stock type Standard versions, in stock or available at short notice 1318692
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Power-to-lock principle, 1 NC/1 NO + 2 NC contacts

Type   Material no.  
Type    Material no.   
Ex STM 298 11/02 A-3G/D stock type Standard versions, in stock or available at short notice 1279434
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Actuators

Type   Material no.  
Type    Material no.   
Straight actuator STM 298-B1 stock type Standard versions, in stock or available at short notice 1266893
Type   Material no.  
Type    Material no.   
Angled actuator STM 298-B5 stock type Standard versions, in stock or available at short notice 1409510
Type   Material no.  
Type    Material no.   
Flexible actuator STM 298-B2 stock type Standard versions, in stock or available at short notice 1328236
Type   Material no.  
Type    Material no.   
Flexible actuator STM 298-B3 stock type Standard versions, in stock or available at short notice 1368126