Ex ES 98 ST

  • Ex zone 1 and 21
  • Metal enclosure
  • Design to EN 50041
  • Wiring compartment
  • Actuator head can be repositioned in factory by 4 x 90°
  • Attention: Please state required international approvals with your order!
  • Special version only for gas Ex zone 2 and dust Ex zone 22 available
Note
  • The actuator is not included in the delivery of the switches

Technical data

Applied standards EN 60947-5-1, EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-31, EN ISO 13849-1, EN ISO 14119
Enclosure aluminium die-cast, corrosion-resistant, powder-coated, anthracite grey, similar to RAL 7016
Cover stainless steel 1.4401, powder-coated, signal yellow, similar to RAL 1003
Actuator stainless steel 1.4301
Sealing silicone
Switch type type 2
Coding level low coding
Degree of protection IP 66 to IEC/EN 60529
B10d (10 % load) 2 million
TM max. 20 years
Switch insert 1 x Ex 95
Contact material silver
Switching system slow action, positive break NC contacts
Switching elements 1 NC/1 NO contact or 2 NC contacts, type Zb
Connection screw connection terminals
Cable cross-section min. 0.2 mm² / AWG 24, max. 1.5 mm² / AWG 16
Cable entry 1 x M20 x 1.5
Clamping range 7 … 13 mm
Rated impulse withstand voltage Uimp 4 kV
Rated insulation voltage Ui 250 V
Conventional thermal current Ithe 6 A
Rated operating current/voltage Ie/Ue 6 A/250 VAC; 0.25 A/230 VDC
Utilisation category AC-15; DC-13
Short-circuit protection 6 A gG/gN fuse
Ambient temperature T6: –20 °C … +40 °C;
T5: –20 °C … +60 °C
Mechanical life > 1 million operations
Operation cycles max. 1800/h
Impact energy max. 7 J
Ex marking II 2G Ex db eb IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80°C/T95°C Db
IECEx Ex db eb IIC T6/T5 Gb,
Ex tb IIIC T80°C/T95°C Db
Approvals DMT 01 ATEX E 178
IECEx BVS 07.0014

Ordering details

Slow action, 1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex ES 98 ST-11 1255734

Slow action, 2 NC contacts

Type   Material no.  
Type    Material no.   
Ex ES 98 ST-02 1304203

Actuators

Straight actuators

Type   Material no.  
Type    Material no.   
Straight actuator ST 98/99-B1 1451618
Type    Material no.   
Straight actuator ST 98/99-B1 with rubber 1451736

Angled actuators

Type   Material no.  
Type    Material no.   
Angled actuator ST 98/99-B5 1451863

Flexible actuators

Type   Material no.  
Type    Material no.   
Flexible actuator ST 98/99-B6 1451865

Accessories

Lockout tag SZ 16/335
  • To prevent inadvertent closing, e. g. during maintenance by preventing actuation of the switch
Slot sealing plug AZ 355
  • For protection against the ingress of coarse dirt
  • Quantity required: 3 per switch