DZ47-125 high breaking miniature circuit breaker

DZ47-125(Same as Schneider NC) is the 125A seriesHigh current miniature circuit breakerIt has short-circuit overload protection for circuits and is suitable for lighting distribution systems and motor distribution systems. Beautiful and compact appearance, light weight, excellent and reliable performance, high breaking capacity, quick disconnection, rail installation, high combustion resistant impact resistant plastic for housing and components, long service life, mainly used for AC 50Hz or 60Hz, single pole rated voltage of 230, two, three, four pole 400V; rated current of 50A to 125A for overload and short circuit protection in circuits, and can also be used for infrequent switching of electrical devices and lighting circuits under normal circumstances.

shouldCircuit breakerIt can be equipped with accessories such as undervoltage release, shunt release, etc. It can also be used for isolating switches and as undervoltage protection and remote disconnection for power lines.

DZ47-125 complies with the requirements of IEC60947-2, GB14048.2, and GB10963 standards.

3.1 The upper limit of ambient air temperature shall not exceed+40 ℃, the lower limit shall not be lower than -5 ℃, and the average temperature over 24 hours shall not exceed+35 ℃.
3.2 The altitude of the installation site should not exceed 2000m.
The relative humidity at the installation site shall not exceed 50% at a maximum temperature of+40 ℃, and higher relative humidity is allowed at lower temperatures; For example, reaching 90% at+20 ℃. And consider the condensation that may occur on the product due to temperature changes.
3.4 Pollution level: 2.
3.5 Installation conditions: Installed in a location without significant impact or vibration, and in a medium without danger (explosion). And there is no gas or conductive dust in the medium that can corrode metals and damage insulation, and there is no place affected by rain or snow.
3.6 Installation method: TH35-7.5 installation rail is used for installation, which is installed in the distribution box, distribution cabinet or box. It is generally installed vertically, and the inclination between the installation plane and the vertical plane does not exceed ± 5 °. The handle is upward to connect the power supply position.
3.7 Installation category: Level III.

Rated current: 63,80100125A
Rated working voltage: 230/400V AC
■ Breaking capacity: 10kA
■ Indicator window
□ Mechanical contact indicator window, effectively indicating disconnection
The window is green and the contact is in a disconnected state; The window is red and the contact is in a closed state
■ Impulse withstand voltage: 4kV
Rated insulation voltage: 500V
■ Attachment
□ OF auxiliary contact, MX+OF shunt release
■ Release characteristics
C-type curve: protects conventional loads and distribution cables, and the magnetic trip unit is set to operate within the range of 8.5In ± 20%
D-type curve: protects high impact loads with large starting currents (such as transformers), and the magnetic trip unit is set to operate within the range of 12In ± 20%

The DZ47-125 high current miniature circuit breaker has high current limiting capability, which maximally limits the destructive energy caused by short circuits. Its current limiting characteristics are shown in Figure 1.

Overcurrent protection characteristics (reference temperature 35 ℃)

Correction values for current used at different ambient temperatures

Current correction factors used at different altitudes

Mechanical and electrical lifespan

other

Structural characteristics of DZ47-125
High rated short-circuit breaking capacity.
Equipped with red and green safety indicators, it provides higher security.
Operated with an energy storage mechanism, the contacts quickly close, overcoming the adverse effects caused by manual operation of the handle speed and greatly improving the product's service life.

Wiring: DZ47-125 high current miniature circuit breaker is suitable for (16-50) mm ² wire connection, and the tightening torque of the wiring terminal is 3.5N · m.