Pepperl Fuchs Zener Barrier Z787.H With diode return

• 2-channel

• DC version, positive polarity

• Working voltage 26.5 V at 10 µA

• Series resistance max. 250 Ω

• Fuse rating 80 mA

• DIN rail mountable

• High power version

• With diode return

General specifications

Type    DC version, positive polarity

Electrical specifications

Nominal resistance    240 Ω

Series resistance    max. 250 Ω

Fuse rating    80 mA

Hazardous area connection

Connection    terminals 1, 2; 3, 4

Safe area connection

Connection    terminals 5, 6; 7, 8

Working voltage    

Supply loop    max. 27 V

Measurement loop    max. 26.5 V at 10 µA

Conformity

Degree of protection    IEC 60529

Ambient conditions

Ambient temperature    -20 ... 60 °C (-4 ... 140 °F)

Storage temperature    -25 ... 70 °C (-13 ... 158 °F)

Relative humidity    max. 75 % , without condensation

Mechanical specifications

Degree of protection    IP20

Connection    screw terminals

Core cross section    max. 2 x 2.5 ... mm2

Mass    approx. 150 g

Dimensions    12.5 x 115 x 116 mm (0.5 x 4.5 x 4.6 inch) (W x H x D)

Height    115 mm

Width    12.5 mm

Depth    116 mm

Construction type    modular terminal housing , see system description

Mounting    on 35 mm DIN mounting rail acc. to EN 60715:2001

Data for application in connection with hazardous areas

EU-type examination certificate    BAS 01 ATEX 7005

Marking    Ex-Hexagon II (1)GD, I (M1) [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I

Voltage    28 V

Current    120 mA

Power    830 mW

Supply    

Maximum safe voltage    250 V

Series resistance    min. 235 Ω

Certificate    TÜV 99 ATEX 1484 X

Marking    Ex-Hexagon II 3G Ex nA IIC T4 Gc

Directive conformity    

Directive 2014/34/EU    EN IEC 60079-0:2018+AC:2020 , EN 60079-11:2012 , EN 60079-15:2010

International approvals

FM approval    

Control drawing    116-0118

UL approval    

Control drawing    116-0139 (cULus)

IECEx approval    

IECEx certificate    IECEx BAS 09.0142

IECEx BAS 17.0091X

IECEx marking    [Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I

Ex ec IIC T4 Gc