Ex RC Si 56

Features/Options

  • 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,
4 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 distances
sn6 mm
sao4 mm
sar30 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

Stock types

Ordering details
Type code

Reed contacts, coded

1 NC/1 NO contact

Type   Material no.
Ex RC Si 56 1Ö/1S - 2m 1189255
Ex RC Si 56 1Ö/1S - 5m 1184598
Ex RC Si 56 1Ö/1S - 10m 1185923

Reed contacts, coded

1 NC/1 NO contact
with LED lamp

Type   Material no.
Ex RC Si 56 1Ö/1S - LED - 2m 1189265
Ex RC Si 56 1Ö/1S - LED - 5m 1189271
Ex RC Si 56 1Ö/1S - LED - 10m 1190301

Reed contacts, coded

2 NC contacts

Type   Material no.
Ex RC Si 56 2Ö - 2m 1189262
Ex RC Si 56 2Ö - 5m 1184620
Ex RC Si 56 2Ö - 10m 1184434

Reed contacts, coded

2 NC contacts
with LED lamp

Type   Material no.
Ex RC Si 56 2Ö - LED - 2m 1189273
Ex RC Si 56 2Ö - LED - 5m 1185181
Ex RC Si 56 2Ö - LED - 10m 1187207
Actuators
Type   Material no.
Actuating magnet Ex MC 56 1180986
Type   Material no.
Actuating magnet Ex MC 56-3 1181408
Accessories
Type   Material no.
Distance plate RC Si 56 1184876
Type   Material no.
Distance plate MC 56 1184875
Type   Material no.
Safety relay module SRM 21 RT2 1179203
Type   Material no.
Safety relay module SRM 21 Multi 1185607