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Scope of Application

DZ47-63 Miniature Circuit Breaker or called MCB 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 DZ47 Circuit Breaker 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 DZ47 Miniature Circuit Breaker complies with IEC60898 and GB10963.1 Standard requirements. DZ47-63 Miniature Circuit Breakers are produced by TAIXI have been certified by the national CCC and CE certification.

Model and meaning

Product model Pole Trip type Rated Current
DZ47-63 1P c 63





B:Type B MCB

C: Type C MCB

D: Type D MCB

1:1A   10:10A    32:32A

2:2A   16:16A    40:40A

3:3A   20:20A    50:50A

6:6A   25:25A    63:63A

Normal operating conditions and installation conditions

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

The main parameters and technical performance

Main Specifications of DZ47 Circuit Breaker:
According to the rated current: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A.
According to the POLE: 1P. Single pole; 2P. Two pole; 3P. Three pole; 4P. Four pole.
According to the circuit breaker instantaneous release form: a. Type B MCB (3In ~ 6In); b. Type C MCB (5In ~ 10In); c. Type D MCB (10In ~ 20In).
Mechanical and electrical life: DZ47 Miniature Circuit Breaker makes and breaks the rated current in the rated voltage, power factor is 0.85~0.9, according to the frequency test of per hour operating cycle 120 times (>32A) or 240 (≤32A), its electrical life is 4000 times, the mechanical life is 10,000 times.

Technical parameters of DZ47 Circuit Breaker

Rated short-circuit breaking capacity of DZ47-63

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

Over-current protection characteristics under the ambient temperature of 30 ℃ ~ 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

Temperature compensation coefficient of DZ47 Circuit Breaker

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 DZ47 Miniatrue Circuit Breaker at different altitudes

Trip type Rated curren ≤2000m 2000~3000m ≥3000m Example
C、D 1~63A 1 0.9 0.8 Operating current after
products of rated current
32A has 3200m derating:

DZ47 MCB tripping characteristic curve DZ47-63

Type C MCB tripping characteristic curve

Type D MCBs tripping characteristic curve

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

Outline and installation dimensions

Keywords: Miniature Circuit Breaker, MCB, Type C MCB

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