Ex RC Si 56

  • Ex zone 1 and 21
  • Thermoplastic enclosure
  • Suitable for the food processing industry
  • 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
  • Maritime certification to DNV GL available on request
  • Attention: Please state required international approvals with your order!
Note
  • The actuator is not included in the delivery of the switches

Technical data

Applied standards EN 60947-5-1, EN 60947-5-3, EN ISO 13849-1, EN ISO 14119, EN 60079-0, EN 60079-18
Enclosure thermoplastic, glass-fibre reinforced, impact resistant, self-extinguishing UL 94 V-0
Defined object Ex MC 56, Ex MC 56-3
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
B10d (10 % load) 2 million
TM max. 20 years
MTTFd > 100 years
DC/DCavg > 99 %
Switching system reed contacts
Switching elements 1 NC/1 NO contact or 2 NC contacts
Connection Pre-wired cable 4 x AWG 24 UL
Cable cross-section 4 x 0.22 mm²
Cable length 2, 5 or 10 m, max. 15 m
Switching voltage max. 30 VDC
Rated operating current/voltage Ie/Ue max. 125 mA, with LED: 20 mA / 24 VDC
Voltage drop at Ie 2.5 V, with LED: 3 V
Switching frequency max. 5 Hz
Switching distances sar > 23 mm
Repeatability ± 0.5 mm
Hysteresis min. 23 mm
Degree of pollution 3
Safety class II
Ambient temperature T6: –20 °C … +70 °C,
T5: –20 °C … +85 °C
Mechanical life > 1 million operations
Impact energy max. 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
Approvals PTB 08 ATEX 2027 X
IECEx PTB 08.0042 X
on request
Note The safety-related data are only valid 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
Type    Material no.   
Ex RC Si 56 1Ö/1S - 5m stock type Standard versions, in stock or available at short notice 1184598
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.

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
Type    Material no.   
Ex RC Si 56 1Ö/1S - LED - 5m 1189271
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.

Reed contacts, coded, 2 NC contacts

Type   Material no.  
Type    Material no.   
Ex RC Si 56 2Ö - 2m 1189262
Type    Material no.   
Ex RC Si 56 2Ö - 5m stock type Standard versions, in stock or available at short notice 1184620
Type    Material no.   
Ex RC Si 56 2Ö - 10m stock type Standard versions, in stock or available at short notice 1184434
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
Type    Material no.   
Ex RC Si 56 2Ö - LED - 5m 1185181
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.

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
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

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
Distance plate RC Si 56
  • Material: POM (black)
Distance plate MC 56
  • Material: POM (black)