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  •   Zener barrier Z728

    Zener barrier Z728

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  • General specifications
    TypeDC version, positive polarity
    Electrical specifications
    Nominal resistance300 Ω
    Series resistancemax. 327 Ω
    Fuse rating50 mA
    Hazardous area connection
    Connectionterminals 1, 2
    Safe area connection
    Connectionterminals 7, 8
    Working voltage
    Supply loopmax. 26.9 V
    Measurement loopmax. 26.5 V at 10 µA
    Conformity
    Degree of protectionIEC 60529
    Ambient conditions
    Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
    Storage temperature-25 ... 70 °C (-13 ... 158 °F)
    Relative humiditymax. 75 % , without condensation
    Mechanical specifications
    Degree of protectionIP20
    Connectionscrew terminals
    Core cross-sectionmax. 2 x 2.5 ... mm2
    Massapprox. 150 g
    Dimensions12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch)
    Construction typemodular terminal housing , see system description
    Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
    Data for application in connection with hazardous areas
    EU-type examination certificateBAS 01 ATEX 7005
    Voltage28 V
    Current93 mA
    Power650 mW
    Supply
    Maximum safe voltage250 V
    Series resistancemin. 301 Ω
    CertificateTÜV 99 ATEX 1484 X
    Directive conformity
    Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010
    International approvals
    FM approval
    Control drawing116-0118
    UL approval
    Control drawing116-0139 (cULus)
    IECEx approvalIECEx BAS 09.0142
    IECEx BAS 17.0091X
    Approved for[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I
    Ex ec IIC T4 Gc