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2P DC Circuit Breaker - Miniature Circuit Breakers for DC and Solar Generation
The JB is a DC circuit breaker dedicated to multi string photovoltaic installations.
This circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the...
The JB is a DC circuit breaker dedicated to multi string photovoltaic installations.
This circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short circuits.
Combined with a switch , the JB will be installed in a string PV protection enclosure at the end of each string of photovoltaic modules.
IEC 60947-2, EN60947-2, GB 14048.2
DC Circuit Breaker - Miniature Circuit Breakers for DC and Solar Generation
The JB is a DC circuit breaker dedicated to multi string photovoltaic installations.
This circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short circuits.
Combined with a switch , the JB will be installed in a string PV protection enclosure at the end of each string of photovoltaic modules.
It can be locked (by a padlocking device) in OFF position as a safety measure for removal of the PV inverter.
Since a fault current can flow in the reverse direction to the operating current, the JB can detect and protect against any bidirectional current.
To ensure the safety of the installation, it is necessary, depending on the various types of application, to combine the JB with:
a residual current device at the AC end
a fault passage detector (insulation monitoring device) at the DC end
an earth protection circuit breaker at the DC end
NOTES
- In all cases, fast action on site will be required to clear the fault (protection not ensured in the event of a double fault).
- JB is not polarity sensitive: (+) and (-) wires can be inverted without any risk.
Meaning and Classification Models
Main Characteristics
| Operating Voltage (Ue) | 1P=250 V DC, 2P=500 V DC 3P=750 V DC, 4P=1000 V DC |
| Rated insulation voltage (Ui) | 1,000 VDC |
| Breaking capacity (Icu) | 10 kA |
| Impulse voltage (Uimp) | 4 kA |
| Electrical connection | By the bottom for In and Out |
| Number of poles | 1P, 2P, 3P, 4P |
| Standards | IEC 60947-2 EN 60947-2 |
Technical Data
- Position contact indication – suitability for isolation according to IEC/EN 60947-2 standard.
- The presence of the green strip guarantees physical opening of the contacts and allows operations to be performed on the downstream circuit in complete safety.
- Increased product service life thanks to fast closing independent of the speed of actuation of the toggle.
- Pre-wired product: Input / Output on the same side.
| Rated service breaking capacity (Ics) | 100 % of the Icu | |
| Endurance (O-C) | Electrical | 1,500 cycles (where L/R=2 ms) |
| Mechanical | 20, 000 cycles | |
| Mechanical | 20, 000 cycles | |
| Degree of pollution | 2 | |
| Category | A (no delay in accordance with IEC / EN 60947-2 standards) | |
| Degree of protection (IEC 60529) |
IP40 | |
| Tropicalisation | Relative humidity: 95 % at 55°C in accordance with IEC 60068-2 and GB 14048.2 standards |
|
| Temperature | Operating | -25°C to 70 °C |
| Storage | -40°C to 85°C | |
Curve
Wiring Diagram
Installation
Dimensions (mm)
Weight (g)
| Circuit breaker | ||||
| Type | 1P | 2P | 3P | 4P |
| Weight (g) | 120 | 240 | 360 | 480 |
Connection
This circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short circuits.
Combined with a switch , the JB will be installed in a string PV protection enclosure at the end of each string of photovoltaic modules.
IEC 60947-2, EN60947-2, GB 14048.2
On the product detail page of every series you will find information about the switch. If it is washable or sealed to a certain IP rating, it will list it on the product detail page. To get to the product detail page, go to our product catalog and search by type or by feature.
It is a safe assumption to note that all Langir switches comply with EN 60529.
It is a safe assumption to note that all our switches comply with RoHS standards. You can find our complete library of RoHS certifications by part number, Certifications.
We have solder profile recommendations for hand soldering, SMT reflow and wave soldering processes. You can find our recommendations Soldering Profiles.
Help can be given either over the phone by sending the fix parts to you, or we will requires you to send products back to us for fixing.
Water-Wash, Process-Sealed, IP67 Switch Seal Rating
Definition of IP Codes (Ingress Protection):
IEC (International Electrotechnical Commission) 60529 Standards document specifies an international Classification system for the sealing effectiveness of enclosures of electrical equipment against the “Intrusion into the equipment of foreign bodies and moisture”.
1. Degrees of Protection – First Digit
6 Dust-tight
2. Degrees of Protection – Second Digit
7 Protection against effects of immersion from 15cm to 1m (6″ to 40″).
Based on the above, our standard for defining a “process-sealed” switch is “sealed to meet the minimum requirements of IP-67”. This means that a switch rated to IP-67 is “Dust-tight” and will pass a water submersion test at 40″ (1m), for up to 30 minutes.
Due to the variables encountered in actual water-wash machine processing, IP67 does not necessarily insure that water entry into the switch cannot occur. the water-wash pressures and air-knife drying that occurs in modern pcb machine-washing can exceed the seal requirements of the IP-67 rating.
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