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.
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codeZbC2+
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Warranty3 years
Technical data
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)
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
Optional accessories and download
COMET Magnetic Foldable Stand
code
PPO001
Manuals
Instruction Manual
Declaration of Conformity
Type Examination Certificate
Manual on the issue COMET sensors in potentially explosive atmospheres
Catalogs
CATALOG - Analog Sensors with 0-10 V or 4-20 mA output
Catalogue Sheets - COMET ATEX Sensors & Zener Barrier
Catalogue Sheets - COMET Zener Barrier
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