The WМ100-2B is a stand-alone dual-port short-circuit isolator designed to prevent disruption of loop addressable devices in case of a short-circuit in the line.
The WМ100-2B short-circuit isolator is non-addressable, the fire alarm control panel does not indicate its state but detects and displays the disappearance of devices in an isolated loop section.
| Operating voltage Vmin…Vmax | 15… 28 V DC |
| Loop voltage (with protocol pulses) | ≤ 38 V |
| Isolating voltage VSC MAX | ≤ 14,5 V |
| Reconnect voltage VSO MIN | ≤ 10,5 V |
| Max. continuous loop current ICmax | ≤ 50 µA |
| Max. continuous current with the switch closed ISmax | ≤ 0,8 A |
| Max. leakage current with the switch open (with LED) ILmax | ≤ 30 mA |
| Max. short-circuit switching current ISmax | ≤ 3,0 A |
| Max. series resistance – switch closed ZCmax | ≤ 0,13 Ω |
| Deisolation impedance ZSC | 500 … 600 Ω |
| Dimensions (L x W x H), mm | 69,7 х 64,6 х 27,5 |
| Operating temperature | -10 ºС to +65 ºС |
| Humidity | 0 – 95 % (non-condensing) |
| Average service life | 10 years |
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WМ100-2B Short Circuit Isolator (technical data brief) (382.80 KB)
