ATEX Zener Barrier ZbC2+

The Zener barrier ZbC2+ is a certified intrinsically safe interface. It is used to connect a certified intrinsically safe device located in a potentially explosive atmosphere (Hazardous area) to a non-certified device that is in a safe area.

The Zener barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area. The ZbC2+ Zener barrier contains two identical diode return barriers in a common housing and it is designed for DIN rail mounting in a safe area.

3 year warranty

MEASURED VALUE
Temperature
Relative humidity

BARRIER TYPE AND DESIGN
Two identical Zener barriers ZB1 and ZB2 in the common housing
Positive polarity with return diode

ELECTRICAL SPECIFICATION
Nominal resistance Ro 310 Ω
Fuse rating 40 mA
Series resistance Rs1 = 355 Ω (terminals 1-5, terminals 3-7)
Rs2 = 42 Ω (terminals 2-6, terminals 4-8)
Voltage drop across return diode 0.8 V
Working voltage (SAFE terminals) max. 26 V at current of less than 10 uA

GENERAL TECHNICAL DATA
Operating temperature range -20 to +60 °C
Dimensions 22,5 x 114 x 100 mm
Weight 125 g
Warranty 3 years

DATA FOR APPLICATION IN CONNECTION WITH HAZARDOUS AREAS
Directive conformity 2014/34/EU
Compliance with standards EN IEC 60079-0:2018, EN 60079-11:2012
Certificate FTZU 22 ATEX 0018X
Identification marking EX ll (3)G [Ex ic Gc] IIC
Voltage Uo 29,4 V
Current Io 96 mA
Resistance Ro min. 306 Ω
Capacitance Co + Induktance Lo 120 nF + 2 mH or 60 nF + 4 mH
Maximum safe voltage 250 V