Description
The Zener Barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area. The zener diodes in the Zener Barrier are connected in the reverse direction. The breakdown voltage of the diodes is not exceeded in normal operation. If this voltage is exceeded, due to a fault in the safe area, the diodes start to conduct, causing the fuse to blow. The Zener Barrier has a negative polarity, i. e. the cathodes of the zener diodes are grounded.
Features
- 1-channel
- DCversion,negativepolarity
- Workingvoltage26.5Vat10μA
- Series resistance max. 327 Ω
- Fuserating50mA
- DINrailmounting
Specificatons
| General specifications | ||
|---|---|---|
| Type | DC version, negative polarity | |
| Electrical specifications | ||
| Nominal resistance | 300 Ω | |
| Series resistance | max. 327 Ω | |
| Fuse rating | 50 mA | |
| Hazardous area connection | ||
| Connection | terminals 1, 2 | |
| Safe area connection | ||
| Connection | terminals 7, 8 | |
| Working voltage | max. 27 V , 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) | |
| Mechanical specifications | ||
| Degree of protection | IP20 | |
| Connection | screw terminals , max. core cross-section 2 x 2.5 mm2 | |
| Mass | approx. 150 g | |
| Dimensions | 12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch) | |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 | |
| Data for application in connection with hazardous areas | ||
| EC-Type Examination Certificate | BAS 01 ATEX 7005 | |
| Group, category, type of protection |  II (1)GD, I (M1) [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I (-20 °C ≤ Tamb ≤ 60 °C) [circuit(s) in zone 0/1/2] |
|
| Statement of conformity | TÜV 99 ATEX 1484 X | |
| Group, category, type of protection, temperature class | II 3G Ex nA IIC T4 Gc [device in zone 2] |
|
| Directive conformity | ||
| Directive 2014/34/EU | EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010 | |
| International approvals | ||
| FM approval | ||
| Control drawing | 116-0118 | |
| UL approval | ||
| Control drawing | 116-0139 | |
| CSA approval | ||
| Control drawing | 116-0119 | |
| IECEx approval | IECEx BAS 09.0142 | |
| Approved for | [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I | |
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