Ex HS Si 4 - 3G/D

  • Ex zone 2 and 22
  • Thermoplastic enclosure
  • Hall elements, coded
  • Actuation from front
  • Switching distance up to 7 mm
  • With pre-wired cable
Note
  • The actuator is not included in the delivery of the switches

Technical data

Applied standards EN 60079-0, EN 60079-18, EN 60947-5-2, EN 60947-5-3, EN ISO 14119, EN ISO 13849-1, EN 62061
Enclosure thermoplastic, glass-fibre reinforced, impact resistant, self-extinguishing UL 94 V-0
Defined object actuator Ex MC 4
Sensor type type 4 interlocking device
Coding level low coding
Degree of protection IP 67 to IEC/EN 60529
Safety-relevant data:
EN ISO 13849-1 Performance Level PL e
Category 4
TM max. 20 years
MTTFd > 100 years
DC/DCavg > 99 %
EN 62061 SIL CL 3
PFHd ≥ 2.47 x 10-8 1/h
Switching system Hall sensor, 2 galvanically separated channels, semiconductor
1 NC/1 NO or 2 NC contacts
Connection cable 6 x AWG 26
Rated operating voltage Ue 24 VDC
Rated operating voltage range UB 10 … 30 VDC
Rated operating current Ie max. 40 mA per channel
Utilisation category DC-12
No-load supply current I0 max. 6 mA per channel
Voltage drop at Ie max. 2.5 V
Switch-on/switch-off time < 1 ms
Short-circuit protection < 50 mA internal reversible fuse
Switching frequency max. 100 Hz
Safety class II
Degree of pollution 3
Ambient temperature –20 °C … +60 °C
Mechanical life > 10 million operations
Switching distances sn 7 mm, sao 6 mm, sar 20 mm
Repeatability ≤ 5 %
Impact energy max. 7 J
Ex marking II 3G Ex mc IIC T6 Gc X,
II 3D Ex mc IIIC T80°C Dc
Notes The safety-related data are only valid in combination with a safety module, e.g. SRM 21 RT2 (mat. no. 1179203).

Ordering details

1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex HS SI 4 1Ö/1S-3G/D - 1m 1181769

2 NC contacts

Type   Material no.  
Type    Material no.   
Ex HS Si 4 2Ö-3G/D - 2m on request Produced to order.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
Type    Material no.   
Ex HS Si 4 2Ö-3G/D - 10m on request Produced to order.
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.   
Actuating magnet coded Ex MC 4 1182903
Type    Material no.   
Actuating magnet coded Ex MC 4/90° 1184680

Accessories

Safety relay module SRM 21 RT2
  • Enclosure width: 22.5 mm
  • 2 NC or 1 NC/1 NO contact can be connected
  • Feedback circuit
  • 2 enabling paths
  • 1 transistor output
  • Manual or automatic reset
  • LED indicator for switching condition
  • Crossed wire monitoring