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 ISO 13849-1, EN 60947-5-3, 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
Notes The safety-related data are only valid in combination with a safety module, e.g. SRM 21 RT2 (mat. no. 1179203).

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 1184598
Type    Material no.   
Ex RC Si 56 1Ö/1S - 10m 1185923

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

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 1184620
Type    Material no.   
Ex RC Si 56 2Ö - 10m 1184434

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

Actuators

Type   Material no.  
Type    Material no.   
Actuating magnet coded Ex MC 56 1180986
Type   Material no.  
Type    Material no.   
Actuating magnet coded Ex MC 56-3 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)