MTL7089 shunt-diode Zener safety barrier — the classic passive IS barrier. 28V / 300 ohm for 4-20mA transmitters. Requires external IS ground busbar.
MTL7089 shunt-diode Zener safety barrier — the classic passive IS barrier. 28V / 300 ohm for 4-20mA transmitters. Requires external IS ground busbar.
| Type | MTL7089 |
| Function | Passive Zener barrier |
| Working Voltage | 28V |
| End-to-end Resistance | 300 R |
| Current Limit | 93 mA |
| Gas Group | IIC |
| Certification | Ex ia IIC |
| Mount | DIN 35 rail |
| Material | PC housing |
| Temperature range | -20°C to +60°C |
| IP rating | IP20 |
| Primary standard | IEC/EN 60079-11 |
| MOQ | 1 |
Requires properly bonded IS ground <1 ohm.