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 standards EN 60947-5-1, EN 60079-0, EN 60079-15, EN 60079-31, EN ISO 13849-1, EN ISO 14119
Enclosure die-cast alloy
Switch type type 2
Coding level low coding
Degree of protection IP 67 to IEC/EN 60529
B10d (10 % load) 12 million
Mechanical life 1x106 operations
Ambient temperature –20 °C … +75 °C
Degree of pollution 3
Mounting position any
Actuating speed V max. 20 m/min
Extraction force (not locked) 30 N
Retention force 20 N
Actuating force max. 35 N
Operation cycles max. 1200/h
Switching system slow action
Contact material Silver, gold flashed
Cable entry 3 x M20 x 1.5
Clamping range 6,5 … 12 mm
Cable cross-section 0.34 … 1.5 mm² (flexible/fixed)
Rated insulation voltage Ui 50 V
Rated impulse withstand voltage Uimp 2.5 kV
Conditional short-circuit current 100 A
Switching voltage min. 12 V at 10 mA
Utilisation category AC-15; DC-13
Rated operating current/voltage Ie/Ue 4 A/50 VAC; 4 A/24 VDC
Switching current min. 1 mA at 24 V
Short-circuit protection 4 A gG fuse (IEC 60269-1)
Conventional thermal current Ithe 4 A
Solenoid operating voltage Us 24 VDC (+10%/–15%)
Power consumption 8 W
Switch-on time ED 100 %
Locking force Fmax Actuator straight: 3000 N
Actuator angled: 1500 N
Actuator flexible: 3000 N
Locking force FZh (FZh = Fmax/1.3) = 2300 N
Impact energy max. 7 J
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 1273831

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 1331263

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 1318692

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 1279434

Actuators

Type   Material no.  
Type    Material no.   
Straight actuator STM 298-B1 1266893
Type   Material no.  
Type    Material no.   
Angled actuator STM 298-B5 1409510
Type   Material no.  
Type    Material no.   
Flexible actuator STM 298-B2 1328236
Type   Material no.  
Type    Material no.   
Flexible actuator STM 298-B3 1368126