Ex STM 298 11/02 A-3G/D

Ex solenoid interlocks
Material number: 1279434
  • Ex zone 2 and 22
  • Metal enclosure
  • Power-to-lock principle
  • With auxiliary unlocking for service, maintenance, etc.
  • Wiring compartment
Notes
  • 1 ATEX cable gland is included in delivery
  • The actuator is not included in the delivery of the switches
In stock
Contact

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
Switching elements1 NC/1 NO contact + 2 NC
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

Contact diagram

Switching functions

Approach direction

Horizontal and vertical

Can be adjusted in 90° steps


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