WITT Solutions GmbH
SMARTE Messtechnik für Gleichstrom – Spannung – Kabel – Isolation
Extension of a WB component by up to four potential-free changeover contacts
WBex DO4 is used to expand a WB component with up to four potential-free changeover contacts.
To do this, the Wbex DO4 component is connected to the internal WB bus.
This can be used, for example, to switch up to 4 actuators or to transmit up to 8 operating states to the SCADA system
| supply voltage | Internal WB bus |
| Input | 1W |
| relative humidity (transport/storage) | 30%-70% |
| outdoor temperature range | -20 bis 50 °C |
| Degree of protection | IP 00 |
| Mains connection and inputs and outputs: | – Screw terminals, pluggable Stripping length: 7 mm |
| Weight | 100g |
| Number | 4 |
| technology | Relay with 4 separate changeover contacts (NC/ NO) |
| switching voltage | 0-250VAC |
| Maximum switching voltage | 300VAC |
| switching current | max. 12A |
| switching capacity | Max. 3000VA / 60W |
| Switching cycles at Imax | 100000 |
| Dielectric strength coil-contact | Max. 4000VAC |
| Dielectric strength with open contact | Max. 1000VAC |
The function of the Wbex assemblies is to implement instructions that they receive from other WB components.
Wbex has four independent changeover contacts (NO / NC) and has a dielectric strength of up to 4000VAC.
The following items are included in the delivery:
• Operation manual
• Installation Guide
• Circuit board
• Packaging
• Test protocol
