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DZ47-63 miniature circuit breaker is mainly used in the AC 50 / 60Hz, rated operating voltage of 230V / 400V and below, rated current of 63A circuit, the circuit breaker is mainly used in electrical wiring of modern buildings and overload, short circuit protection of equipment, also applies to infrequent operation and isolation of the line. Structural features of DZ47-63 MCB is composed of the plastic casing, operating mechanism, contact arc system, trip mechanism and other components. The casing uses a special plastic with high flame retardant and high strength, it has high impact resistance and light-weight. The parts of the operating mechanism of MCB are made of high-strength plastic, which ensures the sensitivity and reliability while obtaining the lowest moment of inertia so that the time from the short circuit fault to the trip mechanism operation is short. The tripping mechanism is composed of a bimetal over-load reverse-time trip mechanism and a short-circuit instantaneous electromagnetic mechanism. Contact arc system uses a special guide arc angle and aisle off room, and has significant current limiting characteristics.
The product complies with IEC60898 and GB10963.1 Standard requirements. DZ47-63miniature circuit breakers produced by DIHOOL have been certified by the national CCC and CE


The upper limit of ambient temperature does not exceed +40 °C, the lower limit does not less than -5°C, and the average temperature of 24h does not exceed +35 °C.
Altitude of the installation site should not exceed 2000m.
Atmospheric relative humidity at ambient air temperature +40°C is not more than 50%, it allowed to have a higher relative humidity at lower temperatures; for example at + 20°C up to 90%. Special precautions should be taken for condensation that may occasionally occur on the product due to temperature changes.
Pollution Degree: Grade 2.
Installation conditions: Installed in a place without significant impact, vibration, non-hazardous (explosive) medium.
Installation: TH35-7.5 installation rail.
Installation category: Class II, III.

Electrical Features
Rated Current Rated Current
Poles 1P 2P 3P 4P
Rated Voltage Ue 90V-125V 200-400V
Insulation Volage Ui 500V
Rated Frequency 50/60Hz
Rated Breaking Capacity 4000A
Rated Impulse Withstand Voltage Uimp 6kV
Dielectric Test Voltage At And Ind. Freq.For 1min 2kV
Thermo-Magnetic Release Characteristic B (3In ~ 6In); C (5In ~ 10In); D (10In ~ 20In).
Electrical Life 4000
Mechanical Life 20000
Contact Position Indicator YES
Protection Class IP20
Reference Temperature For Setting Of Thermal lement 30°C
Ambient Temperature(With Daily Average (35°C) -5°C~40°C
Storage Temperature -25°C~+70°C
Terminal Connection Type Phillips Screws
Suitable For Cable Cross-Section 6-63A 1.5-25MM²;80-125A 4-35MM²
Tightening Torque 2.5-3.0N.m
Mounting 35MM DIN Rail or M4 Side Mounted
Combination With Accessories
Auxillary Contact DZ47-OF
Alarm Contact DZ47-SD
Shunt Release DZ47-MX(DC24V / AC230V)
UnderVoltage And UnderVoltage Release DZ47-MV+MN(AC230V / AC380V)
LossVoltage Release DZ47-MNs
Shunt Release + Auxiliary Contact DZ47-MX+OF(DC24V / AC230V)


Trip Type Rated Current Rated short-circuit
breaking capacity A
C 1≤In≤40 6000 0.65~0.70
C 40<In≤63 4000 0.75~0.80
D 1≤In≤63 4000 0.75~0.80

7.3 Over-current protection characteristics under the ambient temperature of 30 D~35

No. Trip type Rated Current In Test current A Appointed time Expected result Initial state
1 C、D All values 1.13In t≤1h Non tripping Cold
2 C、D All values 1.45In t<1h Tripping Immidiately after
the last test
3 C、D ≤32 2.55In s<t<60s Tripping Cold
>32 1s<t<120s
4 C All values 5In t≤0.1s Non tripping Cold
D 10In
5 C All values 10In t≤0.1s Tripping Cold
D 20In

Circuit breaker temperature compensation coefficient

The temperature compensation coefficient corresponding to different temperature
-10℃ 0℃ 10℃ 20℃ 30℃ 40℃ 50℃ 55℃ 60℃
1~6 1.20 1.14 1.09 1.05 1.00 0.96 0.80 0.75 0.70
10~32 1.18 1.12 1.08 1.04 1.00 0.96 0.92
0.88 0.84
40~63 1.16 1.12 1.07 1.03 1.00 0.97 0.87 0.83 0.80

The correction factor of the current used by the circuit breaker at different altitudes

Trip type Rated curren ≤2000m 2000~3000m ≥3000m
C、D 1~125A 1 0.9 0.8

Wiring: 25mm² and below for wire connection, wiring method is screws to tighten the wiring, the torque is 2.0N · m.

Rated current In(A) Copper conductor nominal cross-sectional area (mm²)
1~6 1
10 1.5
16~20 2.5
25 4
25 4
40~50 10
63 16


Product Model Rated Voltage
Drop away voltage Application
MV 230V value of overvoltage
To make the circuit
breaker tripping and achieve
over-voltage protection of the line
when the power supply
voltage rises to 270V±5%
MN 230V value of undervoltage
To make the circuit breaker
tripping and achieve
under-voltage protection of the line
when the power supply voltage
falls between (0.35~0.75) Ue
MV+MN 230V value of overvoltage
value of undervoltage
To make the circuit breaker
tripping and protect the line
when the 230V rated supply voltage rises
to 270±5% or falls at 170V±5%
to 270±5% or falls at 170V±5%
Loss of pressure
Mns 230V value of undervoltage
loss of pressure value
Uoe=0 Release
When the 230V rated voltage at 75% to 105%,
the no-voltage release will pull in
to make circuit breaker switch on;
When the rated voltage at 40%.
the no-voltage will release to
make circuit breaker trip off.
Three-phase overvoltage-
undervoltage +default phase
MV+MN 380V value of overvoltage
value of undervoltage
To make the circuit breaker
tripping and protect the line
when the 380V rated supply voltage rises
to 460±15 V or falls at 300±15V
Three-phase four-wire
GQ(MV+MN) 230V value of overvoltage
value of undervoltage
To make the circuit breaker
tripping and protect the line
when the 230V rated supply voltage rises
to 270±5%or falls at 170±5%V
Shunt release MX AC230V   To make the circuit breaker
tripping and protect the line
when the control voltage exceeds
the rated voltage of 70% to 110%
Shunt release
+Auxiliary contact
MX+OF AC230V   Long-distance breaks circuit.
and to control the auxiliary
circuit by auxiliary contacts
Long-distance breaks circuit.
and to control the auxiliary
circuit b the micro-switch.
Alarm contact SD 115/230/400V 1.3A To provide alarm signal when
the circuit breaker breaking due
to protective circuits'fault
Auxiliary contact OF 115/230/400V 1.3A To provide auxiliary
signal and control
auxiliary circuit


Circuit Breaker Accessory Rated insulation
voltage Ui
Rated control
supply voltageUs
Release power
wastage(W or VA)
Pull-in voltage
MX+OF Shunt release+
Auxiliary contact
415V AC/DC:220~380V:110-220V 240 (0.7-1.1)Us
AC/DC:24-48V 120
Shunt release+
Auxiliary contact
active 415V AC/DC:220~380V:110-220V 240 (0.7-1.1)Us
AC/DC:24-48V 120
passive 415V AC/DC:220~380V:110-220V 240 (0.7-1.1)Us
AC/DC:24-48V 120
MX Shunt release 415V AC/DC:220~380V:110-220V 240 (0.7-1.1)Us
AC/DC:24-48V 120


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