Ex RC Si 56

  • Ex zone 1 and 21
  • Thermoplastic enclosure
  • Long life
  • Reed contacts, coded
  • Actuation from front
  • Switching distance up to 6 mm
  • With pre-wired cable
  • Special version only for gas Ex zone 2 and dust Ex zone 22 available
  • N.B.: Please state required international approvals with your order!
Note
  • The actuator is not included in the delivery of the switches

Technical data

StandardsEN ISO 13849-1; EN 60947-5-3;
EN ISO 14119; EN 60079-0,
EN 60079-18
Enclosureglass-fibre reinforced, shock-proof thermoplastic (PA 66), self-extinguishing UL 94-V0
ActuatorEx MC 56 or Ex MC 56-3
Sensor typetype 4 interlocking device
Coding levellow coding
Degree of protectionIP 67 to IEC/EN 60529
Switching systemreed contacts
Switching elements1 NC/1 NO contact or 2 NC contacts
ConnectionPre-wired cable 4 x AWG 24 UL
Cable cross-section4 x 0.22 mm²
Cable length2, 5 or 10 m, max. 15 m
 
Safety-relevant data:*
EN ISO 13849-1PL e, Category 4
B10d20 million
TMmax. 20 years
MTTFd> 100 years
DC/DCavg> 99 %
 
Switching voltagemax. 30 VDC
Ie/Uemax. 125 mA, with LED: 20 mA / 24 VDC
Voltage drop at Ie2.5 V, with LED: 3 V
Switching frequencymax. 5 Hz
Switching distancessn 6 mm, sao 4 mm, sar 30 mm
Repeatability< 0.5 mm
Hysteresis≤ 24 mm
Degree of pollution3
Safety classII
Ambient temperatureT6: –20 °C … +70 °C,
T5: –20 °C … +85 °C
Mechanical life> 10 million operations
Impact energymax. 7 J
Ex marking II 2G Ex mb IIC T6/T5 Gb
II 2D Ex mb IIIC T80 °C/T95 °C Db IP67
IECEx Ex mb IIC T6/T5 Gb
Ex mb IIIC T80 °C/ T95 °C Db IP67
ApprovalsPTB 08 ATEX 2027 X
IECEx PTB 08.0042 X

on request

* is only achieved in combination with a safety module

Ordering details

Reed contacts, coded

1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex RC Si 56 1Ö/1S - 2m 1189255
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 RC Si 56 1Ö/1S - 5m stock type Standard versions, in stock or available at short notice 1184598
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Type    Material no.   
Ex RC Si 56 1Ö/1S - 10m 1185923
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Reed contacts, coded

1 NC/1 NO contact
with LED lamp

Type   Material no.  
Type    Material no.   
Ex RC Si 56 1Ö/1S - LED - 2m 1189265
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 RC Si 56 1Ö/1S - LED - 5m 1189271
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 RC Si 56 1Ö/1S - LED - 10m 1190301
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Reed contacts, coded

2 NC contacts

Type   Material no.  
Type    Material no.   
Ex RC Si 56 2Ö - 2m 1189262
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 RC Si 56 2Ö - 5m stock type Standard versions, in stock or available at short notice 1184620
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Type    Material no.   
Ex RC Si 56 2Ö - 10m stock type Standard versions, in stock or available at short notice 1184434
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If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Reed contacts, coded

2 NC contacts
with LED lamp

Type   Material no.  
Type    Material no.   
Ex RC Si 56 2Ö - LED - 2m 1189273
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 RC Si 56 2Ö - LED - 5m 1185181
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 RC Si 56 2Ö - LED - 10m 1187207
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
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 56 stock type Standard versions, in stock or available at short notice 1180986
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Type   Material no.  
Type    Material no.   
Actuating magnet coded Ex MC 56-3 stock type Standard versions, in stock or available at short notice 1181408
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Accessories

Safety relay module SRM 21 RT2
  • LED indicator for switching condition
  • 2 NC or 1 NC/1 NO contact can be connected
  • Crossed wire monitoring
  • Manual or automatic reset
  • 1 transistor output
  • 2 enabling paths
  • Feedback circuit
  • Enclosure width: 22.5 mm
Safety relay module SRM 21 Multi
  • PL e, SIL CL 3
  • LED indicator for switching condition
  • Manual or automatic start
  • 1 auxiliary output
  • 2 enabling paths potential-free
  • 2 NC or 2 change-over contacts can be connected
  • Feedback circuit
  • Enclosure width: 22.5 mm