JCZS80-DC Polarity DC Miniature Circuit Breaker (MCB)
- Function
JCZS80-DC miniature DC circuit breaker is designed for solar / photovoltaic PV system, energy storage and other direct current DC applications.They are mainly placed between batteries and hybrid inverters.
JCZS80-DC DC circuit breaker provides scientific arc extinguishing and flash barrier technology to fulfill quick and safe current interruption.
JCZS80-DC DC circuit breaker is a protective device equipped with both a thermal and an electromagnetic release that is available in 1 pole ,2pole, 3 pole and 4 pole versions. The switching capacity is 10kA according to IEC/EN 60947-2. The DC rated voltage is 300V per pole, rated voltage up to 1200V DC.
JCZS80-DC circuit breaker is available with rated currents of 2A to 80A.
JCZS80-DC DC circuit breaker offer new features, better connection, superior performance and increased levels of security. Its breaking capacity is up to 10kA.
JCZS80-DC DC circuit breaker 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 JCZS80-DC Circuit breaker 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 circuit breaker 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
- Application
JCZS80-DC polarity DC circuit-breakers are used in communication systems and PV DC systems



- Electrical characteristics
| Product code | JCZS80-DC | |||
| Pole | 1 Pole | 2 Pole | 3 Pole | 4 Pole |
| Standard | IEC/EN 60947-2,IEC/EN 60898-1 | |||
| Electrical features | Rated current In (A) | 6,10,16,20,25,32,40,50,63 | ||
| Rated voltage Ue(V) | 1P:DC300V, 2P:DC600V, 3P:DC 900V, 4P:DC1200V | |||
| Insulation voltage Ui (V) | 1200V | |||
| Rated impulse withstand voltage(1.2/50) Uimp (V) | 6000V | |||
| Rated breaking capacity | 10KA | |||
| Overvoltage category | 3 | |||
| Pollution degree | 3 | |||
| Instantaneous tripping characteristics | B:4In±20%, C:8In±20%, K: 10In±20% | |||
| Mechanicalfeatures | Electrical life | ≥1500 | ||
| Mechanical life | ≥20000 | |||
| Contact position indicator | Yes | |||
| Protection degree | IP 20 | |||
| Reference temperature for setting of thermal element(°C) | 30 | |||
| Ambient temperature (with daily average≤35°C) | -5...+40 °C | |||
| Storage temperation (°C) | -25...+70 °C | |||
| Installation | Terminal connection type | Cable/U-type busbar/Pin-type busbar | ||
| Terminal size top/bottom for cable | 25mm2 / 18-4 AWG | |||
| Terminal size top/bottom for busbar | 10mm2 / 18-8 AWG | |||
| Tightening torque | 2.5 N*m / 22 InI-bs. | |||
| Mounting | On DIN rail EN 60715 (35mm) | |||
| Combination with accessories | Auxiliary contact | Yes | ||
| Shunt release | Yes | |||
| Under voltage release | Yes | |||
| Alarm contact | Yes | |||
- Wiring diagram


CSDM7-63H-3300
WLM6RT-125A
WLM6RT-160A
WLM6RT-250A
WLM6RT-400A
WLM6RT-630A
WLM6RT-800A
WLM6RT-1250A
JCB1-125
JCB3-40M
JCB3-80H
JCB3-80M
JC125-4P
JCB3-63DC
JCMX
JCSD
JCOF
JCMX1-125
JCOF1-125
JCSD1-125
JCR3HM
JCRD2-125
JCRD4-125
JCRB2-100
JC3RH-2P
JC3RH-S
JC3RH-B
JC3RH-BS
JCR2-63
JCB2LE-80M
JCB2LE-80M
JCB1LE-125
JCB3LM-80
JCH2-125
CJ19
JCMCU
JCHA
JCSD-40
JCSD-60
JCSP-40
JCSP-60
JCSPV
WEW1-1000
WEW1-1600
WEW1-2000
WEW1-3200
WEW1-4000
WEW1-6300
DC6-125
AX-400-1250
AXAL-400-1250A
AL-400-1250
DC3-160
AXS-400-1250A
SHT-125-160
UVT-125-160A
P-250A-3P-A
400-3P/4P terminal cover
1250-3Pmccb accessories busbar
250-3P terminal conver
WLM6-TCV-160A-3P
WLM6-MIP-250A
WLM6-125A-3300 3P/4P
WLM6-160A-3300 3P/4P
WLM6-250A-3300 3P/4P
WLM6-400A-3300 3P/4P
WLM6-630A-3300 3P/4P
WLM6-800A-3300 3P/4P
WLM6-1250A-3300 3P/4P
WLM6-1600A-3300 3P/4P
WLM6-2000A 3P/4P
WLM8-125H-3300
WLM8-250H-3300
WLM8-400H-3300
WLM8-400H-4300
WLM8-630H-3300
WLM8-630H-4300
WLM6E-160A-3300 3P
WLM6E-250A-3300
WLM6E-400A-3300 3P/4P
WLM6E-630A-3300
WLM6E-800A-3300 3P/4P
WLM6E-1250A-3300
WLM6E-1600-3300 3P/4P
WLM6E-2000A-3300 3P/4P
WLM8E-250H-3300
WLM8E-400H-3300
WLM8E-400H-4300
WLM8E-630H-3300
WLM8E-630H-4300
WLM6EY-250-3300 3P/4P
WLM6EY-400 3P/4P
WLM6EY-630 3P/4P
WLM6EY-800A 3P/4P
WLM6EY-1250A 3P/4P
WLM6ELY-160A
WLM6ELY-250A
WLM6ELY-400A
WLM6ELY-800A
WLM8EY-250H-3300
WLM8EY-400H-3300
WLM8EY-630H-3300
WLM6LY-125A
WLM6L-160A
WLM6LY-250A
WLM6LY-400A
WLM6LY-800A
WLM6LY-630A
WLM6LY-1250A
WLM8LY-125H-3300
WLM8LY-250H-3300
WLM8LY-400H-3300
WLM8LY-630H-3300
WLM7DC-250A-2300 2P/3P
WLM7DC-315A-3300 2P/3P
WLM7DC-400A-2300 2P/3P
WLM7DC-630A-3300 3P
WLM7DC-800A-2300 2P/3P
WLM7DC-400A 2300
WLM7DC-630A-2300 2P
WLM7HU-250-3300 3P
WLM7HU-315-3300 3P
WLM7HU-400-3300 3P
WLM7HU-630-3300 3P
WLM7HU-800-3300 3P
PV-1500V/250A
WEW3-1600
WEW3-2500
WEW3-4000
WEW3-7500























