ONCCY
ONCCY ERS40-10-MC4 firefighter safety disconnect for 5 strings
ONCCY ERS40-10-MC4 firefighter safety disconnect for 5 strings
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€242.44
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€242.44
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Delivery in 10-20 days5 strings300-1500 V DCIP65Warranty 5 yearsONCCY
ONCCY ERS40-10-MC4 firefighter safety disconnect for 5 strings
The ERS40-10-MC4 disconnect opens the DC circuit of 5 photovoltaic strings whenever the roof has to be made safe: in a fire, during a fire brigade intervention or for maintenance.
Operation is motorised and driven by the presence of the AC mains voltage: if the grid drops, the device uses the energy stored in its capacitors to open the poles anyway. The enclosure is rated IP65 and installs outdoors close to the modules, with MC4 connectors on the input and output.
Key strengths
Automatic release from the gridThe control voltage disappears and the DC array opens by itself.
Capacitor back-upThe energy for the operation is stored on board: it works even if the grid drops.
Motorised operationOpening and closing with no manual action on the roof.
IP65Sealed enclosure suitable for outdoor mounting, close to the modules.
MC4 connectorsIt goes between the strings and the inverter with no special wiring.
5-year warrantyManufacturer's cover on the device.
Technical specifications
| Feature | Value |
|---|---|
| Product code | ERS40-10-MC4 |
| Manufacturer | ONCCY |
| Type | Motorised firefighter safety disconnect for the PV array |
| Strings supported | 5 strings |
| Poles | 10 |
| DC circuit voltage | 300 ~ 1500 V CC |
| DC circuit current | Up to 55 A (supplier data) |
| Control supply | 100 ~ 270 V AC, nominal 220 ~ 240 V / 50 Hz |
| Power consumption | 1 W with contacts closed |
| Connectors | MC4 |
| Operating temperature | -20 ~ 50 °C |
| Maximum disconnection temperature | 70 °C |
| Protection rating | IP65 |
| Dimensions (W x D x H) | 370 x 88 x 203 mm |
| Warranty | 5 years |
The disconnect must be supplied from the same AC line you want to use as the trip command: when that line is removed, the PV array opens.