| Customization: | Available |
|---|---|
| Max Circuit Current: | 63A |
| Max Circuit Voltage: | 1600VDC |
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ONCCY'Rapid Shutdown Device (Firefighter Safety Switch) Factory is dedicated to manufacturing high-quality switches designed to ensure enhanced safety for emergency response teams. With advanced features and robust construction, our switches provide reliable disconnection of power sources during firefighting operations. Trust our expertise in firefighter safety and choose our switches to enhance the protection of lives and property. Contact us today to discover our range of firefighter safety switches and prioritize safety in critical situations.
In most photovoltaic systems, the dc isolator is integrated into the dc/ac power inverter. After switching off the dc isolator, the cables between the dc solar modules and dc/ac power inverter running through the building are still subject to up to 1000 v dc. in the event of a fire, firefighters are exposed to a very serious source of potential danger. The ONCCY firefighter safety switch provides the solution. It directly disconnects the dc current in close proximity to the solar modules and creates a safer situation for firefighters.
The first step for any firefighter in fighting a fire is to shut down the main AC power circuit. This makes it possible to start extinguishing the actual fire without the risk of electrocution. Onccy developed the Firefighter safety Switch according to this standard international safety routine. This prevents firefighters from having to take any extra action in case of a fire, maximizing their and your safety in the event of a fire.
As soon as a firefighter shuts down the main AC circuit, the ERS/ERP will detect this. If this power down situation lasts longer than 5 seconds, the ERS/ERP will automatically switch to the OFF position. Since the ERS/ERP is located close to the PV modules, the high voltage DC current from the PV modules will be completely isolated, which leaves a safe situation for the firefighters when fighting a fire in the commercial or residential building.
This is our new NS quick disconnect solution, designed to enhance the capabilities of our existing NM model.
Building upon the NM model's features such as a retractable rear pin and pre-wired AC cables, the NS solution addresses a common customer pain point: ensuring watertight connections when extending AC cables. To achieve this, we have incorporated an IP68 rated, three-conductor waterproof connector at the end of the external AC cable. This connector eliminates the need for welding or soldering, allowing for quick and easy installation with just a screwdriver. Once connected, the assembly maintains an IP68 waterproof rating, simplifying future maintenance and disassembly
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 1600V 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.
This innovative Firefighter Safety Switch is the ideal solution for safeguarding your rooftop solar installation during emergencies or fire. It functions as a rapid shutdown device, capable of handling a maximum circuit voltage of 1600 VDC and interrupting currents up to 63A. The system incorporates a combination of photovoltaic panel strings connected to a dedicated rapid shutdown switch.
Key Features:
| Parameter | Value |
|---|---|
| Main parameter | ERS |
| String voltage (VDC) | 300-1500 |
| String current (A) | 9-55 |
| Circuit | 3/4/5 |
| Connection mode of Isolation switch | 10 |
| Working voltage | 100Vac-270Vac |
| Rated voltage | 230Vac |
| Rated current | 30mA |
| Starting (loading) current | 100mA (AVG) |
| Action current | 300mA (Max) |
| Contact action condition | 24Vdc-300mA (Max) |
| Operating temperature | -20°C+50°C |
| Maximum temperature before automatic shutdown | +70°C |
| Storage temperature | -40°C - +85°C |
| Protection level | IP66 |
| Over current protection | Yes |
| Authentication | CE |
| Meets standard | EN 60947-1&3 |
| Mechanical life | 10000 |
| Number of loaded operations (PV1) | >1500 |
| 1 | It is applicable to a wide range of voltage and current, suitable for photovoltaic systems of 600V~1500V, 9A~55A, and a single switch can turn off up to 10 strings of current at the same time |
| 2 | Wider range of AC voltage: 100~270Vac |
| 3 | Use internal motor drive to disconnect. It can be turned off by an AC switch, or it can be turned off remotely |
| 4 | LED indicator, ON or OFF can be easily identify status |
| 5 | IP66 level, suitable for outdoor installation fully |
| 6 | Equipped with breathing valve to avoid condensation inside the enclosure |
| 7 | Low noise when running, which does not affect people's normal life |
| 8 | Built-in temperature sensor, Shut down automatically exceeding 70°C |
| 9 | Knock outs | Cable glands | MC4 connectors optional |
| 10 | Modular design of product components, fast and convenient after-sale service |
As soon as a firefighter shuts down the main AC circuit, the ERS/ERP will detect this. If this power down situation lasts longer than 5 seconds, the ERS/ERP will automatically switch to the OFF position. Since the ERS/ERP is located close to the PV modules, the high voltage DC current from the PV modules will be completely isolated, which leaves a safe situation for the firefighters when fighting a fire in the commercial or residential building.
The benefits of using a rapid shutdown switch include:
Increased safety for firefighters and other personnel working near the solar panel system
Reduced risk of electrical shock
Compliance with NEC 2014 and later
There are two main types of rapid shutdown switches:
String-level rapid shutdown switches de-energize the entire string of solar panels.
Module-level rapid shutdown switches de-energize individual solar panels.
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