| Customization: | Available |
|---|---|
| Type: | Low-voltage |
| Structure: | Single-column Disconnector |
|
Still deciding? Get samples of US$ 396.57/Piece
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Firefighter safety switch ensures the safety for Photovoltaic system
ERS series firefighter safety switch is applied to residential PV system or industrial and commercial PV system, its maximum loop voltage can be up to 1500V which meets the requirements of high-power panel.
ERS series firefighter safety switch matches international standard firefighter working procedure. When a fire occurs in the photovoltaic system, the AC side will be disconnected firstly.
On the other hand, relying on advanced temperature sensor to real-time monitoring the temperature inside the enclosure, ONCCY's firefighter safety switch can automatically disconnect the switch if the inside temperature exceeds 70ºC.
The ERS series ERS DC Isolator and can be used directly with PV panels. In case of fire, the firefighter safety switch can rapidly shut down the PV array, without any risk of high DC voltage. If the client wants the entire roof to achieve an even lower DC voltage (e.g. under 80V ~ 120V), it is possible to apply multiple safety switches (one for each 2-3 panels) to ensure maximum safety.
ERS series firefighter safety switch resets automatically. When the AC power supply is turned off (e.g. during a power cut) and then the supply is restored, the ERS series will reand connect the circuit quickly and automatically. The client doesn't need to reit manually each time.
When ERS product is installed in the system, in case the AC circuit has no power such as during a power cut, powerline maintenance or grid failure, the DC circuit will be automatically shut down. This will greatly prolong the life of the solar inverters, and makes it safer to repair or replace solar inverters.
ERS series are equipped with DC isolator, which is the most popular PV application DC isolator worldwide. Combined with self-cleaning contacts, the switches have increased durability and safety. For this reason, the ERS has been many PV inverter manufacturers.
ONCCY has rich experience in developing DC switches and has customers worldwide. ONCCY has become the No. 1 company in China developing physical isolation with arc extinguishing capability for direct current without using remote communication technology, effectively ensuring the safety of high DC voltage roofs.
ERS series products industry level capacitors and motors, and strictly control the internal key components. It can work normally in harsh environments from minus 20°C to 70°C. It is equipped with a waterproof breathable valve to effectively avoid cavity condensation. The designed life span can meet the operation requirements of the photovoltaic system which is 2 years.
Technical data
| Rated Current | 13:13A 20:20A 25:25A 40:40A 50:50A |
| Pole | 12:12P 14:14P 16:16P 18:18P 20:20P |
| Wiring | Mc4: MC4 terminal / Blank |
| Main parameter | ERS |
| String voltage (VDC) | 300~1500 |
| String current (A) | 9~55 |
| Circuit | 6 , 8 , 10 |
| Connection mode of Isolation switch | 12 , 16 , 20 |
| Working voltage | 100Vac - 270Vac |
| Rated voltage | 230Vac |
| Rated current | 60mA |
| Starting (loading) current | 200mA(AVG) |
| Action current | 600mA(Max) |
| Contact action condition | 24Vdc -600mA(Max) |
| Operating temperature | -20°C - +50°C |
| Maximum temperature before automatic shutdown | +70°C |
| Storage temperature | -40°C - +85°C |
| Protection level | IP66 |
| Protection level | II |
| Authentication | CE |
| The DC isolation switch meets the standard | EN 60947-1&3 |
| Mechanical life | 10000 |
| Number of loaded operations (PV1) | >1500 |
FAQ
){kind=link}