P+F Z787 Zener Barrier 50mA DC Positive Polarity

The Zener Barrier Z787 is a 2-channel, DC version with positive polarity, designed for DIN rail mounting with diode return capability. It features a working voltage of 26.5 V at 10 µA and maximum series resistance of 327 Ω.

• Type: DC version, positive polarity
• Nominal resistance: 300 Ω
• Series resistance (terminals 1, 8): max. 327 Ω
• Voltage drop (terminals 4, 5): 1.2 V + (36 Ω x signal current)
• Fuse rating: 50 mA

• Hazardous area connection: terminals 1, 2; 3, 4
• Safe area connection: terminals 5, 6; 7, 8

• Supply loop: max. 27 V
• Measurement loop: max. 26.5 V at 10 µA
• Maximum safe voltage: 250 V

• Ambient temperature: -20 ... 60 °C (-4 ... 140 °F)
• Storage temperature: -25 ... 70 °C (-13 ... 158 °F)
• Relative humidity: max. 75%, without condensation

• 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)
• Mounting: on 35 mm DIN mounting rail according to EN 60715:2001

• EU-type examination certificate: BAS 01 ATEX 7005
• Marking: II (1)GD, I (M1) [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
• Voltage: 28 V
• Current: 93 mA
• Power: 650 mW
• Certificate: TÜV 99 ATEX 1484 X
• IECEx certificate: IECEx BAS 09.0142, IECEx BAS 17.0091X
• FM approval control drawing: 116-0118
• UL approval control drawing: 116-0139 (cULus)