• Sezionatore di Sicurezza Antincendio ONCCY ERS50-8-MC4 per 4 Stringhe
1 1

ONCCY

ONCCY ERS50-8-MC4 firefighter safety disconnect for 4 strings

ONCCY ERS50-8-MC4 firefighter safety disconnect for 4 strings

€190.71
€190.71
Sale Sold out Excl. VAT — calculated in the cart
See the price with VAT

Price including VAT by delivery country

  • Italy22% €232.66
  • Germany19% €226.94
  • France20% €228.85
  • Austria20% €228.85
  • Belgium21% €230.75
  • Bulgaria20% €228.85
  • Croatia25% €238.38
  • Cyprus19% €226.94
  • Czech Republic21% €230.75
  • Denmark25% €238.38
  • Estonia24% €236.48
  • Finland25.5% €239.34
  • Greece24% €236.48
  • Hungary27% €242.20
  • Ireland23% €234.57
  • Latvia21% €230.75
  • Lithuania21% €230.75
  • Luxembourg17% €223.13
  • Malta18% €225.03
  • Netherlands21% €230.75
  • Poland23% €234.57
  • Portugal23% €234.57
  • Romania21% €230.75
  • Slovakia23% €234.57
  • Slovenia22% €232.66
  • Spain21% €230.75
  • Sweden25% €238.38

Shown prices exclude VAT. At checkout the rate of the delivery country applies. Businesses with a valid EU VAT number buy without VAT (reverse charge).

  • Prices exclude VAT: tax is calculated in the cart based on the delivery country.
  • EU businesses: 0% VAT with a VAT number valid in VIES — the field appears at checkout, below the delivery address.
  • Reduced 10% VAT on solar and storage for customers in Italy: write to us before ordering.

Shipping

  • Italy: €13 on orders up to €150, free shipping over €150.
  • European Union: 60 € per order, with no threshold

Rates apply to the cart total and are confirmed at checkout, where shipping to countries outside the EU is also calculated.

Read the full shipping conditions

View full details
Delivery in 10-20 days4 strings300-1500V DCIP65Warranty 5 yearsONCCY

ONCCY ERS50-8-MC4 firefighter safety disconnect for 4 strings

The ERS50-8-MC4 disconnect opens the DC circuit of 4 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 ERS50-8-MC4
Manufacturer ONCCY
Type Motorised firefighter safety disconnect for the PV array
Strings supported 4 strings
Poles 8
DC circuit voltage 300 ~ 1500V CC
DC circuit current 9 ~ 55A
Control supply 100 ~ 270V AC, nominal 220 ~ 240V / 50Hz
Power consumption 1W 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.