SP-MBUS-40V-IP

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.

• 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 I_n(8/20μs) 10kA.
• Serial resistance per line 2.2 Ω.
• Lightning arrester protection for cable shielding.
• Plastic box with dimensions of 100x100x39mm.

• In order to achieve maximum possible level of reliability and quality the devices are electrically tested and pass visual inspection during manufacturing.