Kobold NBK-ATEX, Operating Instructions Manual

Page: 20 / 57

NBK-03 to -33 ATEX
page 20 NBK-03 to -33 ATEX K10/0322
ATEX approval
ATEX limit contact, model NBK-RA
Contact operation: bistable changeover contact encapsulated
Switching hysteresis: approximately 15 mm
Max. switching capacity: 45 VA; 230 V
AC/DC
; 0.6 A
Temperature class: T5 / T6
Max. ambient temperature: 70 °C / 85 °C
Connection: 3 m PVC cable
Housing: metallic, cast (GD-ZN AI 4 Cu1)
Protection: IP 67
ATEX marking: II 2G Ex mb IIC T5/T6 Gb
II 2D Ex mb IIIC IP67 T105°C Db
ATEX reed contact resistor chain model: …2...
In protection type intrinsically safe Ex ia IIC only for connection to a
certified intrinsically safe current loop with the following maximum values:
Total resistance:
0.7...7 kΩ
Max. voltage: U
I
= 24 V
Max. capacity: Pi = 1.2 W
Temperature class: T6
Resolution: 10 mm
Housing: Aluminium pressure cast
Protection: IP65
ATEX marking: Ex II 1GD Ex ia IIC T6 Ga
ATEX immersible reed contact resistor chain options E/R/B only in
connection with external intrinsically safe power supply