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Function and application
MBX-R/L surge protect or protect un-earthed data (asymmetrica l, suspended) cable that used for dual wire electronic measurement and control and the voltage shall not exceed 110V, frequency not more than 2MHz, to prevent data cable and related equipment from being damaged due to surging over-voltage caused by lightning or traveling wave. It is mounted between LPZ1 LPZ3.
MBX-R/L two-stage circuit consists of gas discharging tube, piezore-sistance and clamping diode, with advantages of large discharging capacity, short clamping time and low protection level.
MBX-R/L protector can be mounted on 35mm rail of different standard switching box or distribution box. It does not need screws for connecting with terminal.
Technical Parameter
| Arrester | MBX-R/L | ||||
| Mounting position | 1 3 |
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| Nominal voltage | 5V | 6V | 12V | 24V | 48V |
| Max. continuous operating voltage | 7V | 9V | 15V | 30V | 51V |
| Voltage protective level | ≤13V | ≤20V | ≤30V | ≤51V | ≤100V |
| Rated loading current of category R | 0.2A | ||||
| Rated loading current of category L | 1.0A | ||||
| Nominal discharging current | 10KA | ||||
| Series connected resistance of each line of category R | 15 |
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| Series connected inductance of each line of category L | 100 H |
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| Cross sectional area of connected conductor | 0.14-2.5mm2 | ||||
| Peel-off length for the wire to be connected | 6-7mm | ||||
| Color | Grey | ||||
| Material | Fire resistant reinforced PC | ||||
| Applicable standard | GB18802.2 IEC61643-21 | ||||
Outside Size Fig
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