SP-MBUS-40V-IP
Combined coarse and fine surge protection for M-Bus networks
Application
The surge protection is designed to protect a two wire communication line of an M-Bus network against impulse overvoltage. The two stage protection protects M-Bus devices against overvoltage between the wires and between the ground and each wire. The surge protection is suitable for M-Bus slave and master devices regardless of type.
The protection has a separate lightning arrester for connection to the communication cable shielding. This can be used for prevention of reverse currents between separate ground points or grounding circuits.
Main characteristics
- Wall mounted, ingress protection IP54.
- Suitable for protection of slave and also master devices.
- Maximum current load 0.4A – 255 M-Bus devices.
- Maximum M-Bus operating voltage 44V.
- Peak surge current In(8/20μs) 10kA.
- Serial resistance per line 2.2 Ω.
- Lightning arrester protection for cable shielding.
- Plastic box with dimensions of 100x100x39mm.
Guarantee of quality
- In order to achieve maximum possible level of reliability and quality the devices are electrically tested and pass visual inspection during manufacturing.
| Electrical properties | |
|---|---|
| Operating voltage A-B | 40V |
| Maximum operating voltage A-B | 44V |
| Maximum operating current A,B | 0.4A – 255 M-Bus slaves |
| Maximum operating voltage A,B to PG | 90V |
| Peak surge current In (8 / 20 μs) | 10 kA |
| Response time | < 1ns |
| Maximum clamping voltage A-B at In | < 74V |
| Maximum clamping voltage A,B to ground at In | < 300V |
| Serial resistance per line | 2.2 Ω |
| Connector | terminals for wires of up to 2.5 mm² cross-section area, 4mm² for PE (Grounding wire) |
| Temperature | |
| Operating range | -40°C to 80°C |
| Mechanical construction | |
| Mechanical design | plastic box |
| Mounting | two holes spread 110mm apart |
| Dimensions: height x width x depth | 100 x 100 x 39 mm (100 x 120 x 39 mm with tabs) |
| Protection classification | IP54 |
| Weight | 93g |
End user
Price list for individuals and companies which do not buy converters for resale.
Integrator
Price list for companies which buy converters for the purpose of resale to their custommers as manufacturers or suppliers.
The price list is available only to registered business partners.
Registration request.
Manuals
Connectors
| Connectors | Type | |
|---|---|---|
| Protected M-Bus A, B |
Terminals for connecting the surge protected M-Bus line. Connection to the protected M-Bus device. | Terminals wire max. 2.5mm² |
| M-Bus input A, B |
Terminals for connecting the M-Bus line with the risk of overvoltage occurrence. | Terminals wire max. 2.5mm² |
| PE ⏚ |
Grounding terminal. Connect to the grounding of the electrical installation. Use shortest possible wire with cross-section of 2.5 to 4 mm² | Terminals wire max. 4mm² |
| Cable shield | Terminal for connecting the cable shielding. | Terminals wire max. 2.5mm² |
