Ex STM 295 1Ö1S/1Ö1S-A/90°

Ex solenoid interlock
Material number: 1188542
(Material number old: 95353310)
  • Ex zone 1 and 21
  • Thermoplastic enclosure
  • Double insulated
  • Two Ex switch inserts in one enclosure
  • Power-to-lock principle
  • Locking force 1000 N
  • Wiring compartment
  • N.B.: Please state required international approvals with your order!
  • The actuator is not included in the delivery of the switches

Technical data

Applied standardsEN 60947-5-1; EN ISO 14119;
EN 60079-0, -1, -7, -18, -31;
EN ISO 13849-1
Enclosureglass-fibre reinforced, shock-proof thermoplastic, self-extinguishing UL 94 V-0
Switch typetype 2
Coding levellow coding
Tightening torquecover screws: 0.5 … 0.6 Nm
switch inserts M3 screw connection terminals: min. 0.6 Nm
solenoid M3.5 screw connection terminals: min. 0.8 Nm
Degree of protectionIP 64 to IEC/EN 60529
Contact materialsilver
Switching systemslow action, positive break NC contacts
Switching elements1 NC/1 NO contact + 1 NC/1 NO contact, type Zb
Connectionscrew connection terminals
Cable cross-sectionmax. 1.5 mm² (incl. conductor ferrules)
Cable entry2 x M20 x 1.5
Clamping range7 … 12 mm
B10d (10 % load)1 million
TMmax. 20 years
Rated operating isolation voltage Ui250 V
Rated impulse withstand voltage Uimp4 kV
Conventional thermal current Ithe3 A
Utilisation categoryAC-15; DC-13
Rated operating current/voltage Ie/Ueenabling/signalling contacts: 3 A/250 VAC; 0.25 A/230 VDC;
direct-current solenoid: 0.08 A / 24 VDC +10 %/–15 %
Short-circuit protection3 A gG/gN fuse;
direct-current solenoid: 2 A (slow blow)
Power consumptionmax. 47 W (0.25 s)
Operation cyclesmax. 1200/h
Mechanical life> 500 000 operations
Locking force Fmax1000 N
Impact energymax. 7 J
Ambient temperature–20 °C … +55 °C
Ex marking II 2G Ex db eb mb IIC T4 Gb,
II 2D Ex tb IIIC T100 °C Db
IECEx Ex db eb mb IIC T4 Gb,
Ex tb IIIC T100 °C Db
ApprovalsBVS 10 ATEX E 053 X
IECEx BVS 11.0030X
Weight440 g

Contact diagram


Type   Material no.  
Type    Material no.   
Straight actuator STM 295-B1 1183481
Type   Material no.  
Type    Material no.   
Angled actuator STM 295-B5 1183470
Type   Material no.  
Type    Material no.   
Flexible actuator STM 295-B6 1435030