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SCOPE OF APPLICATION

DZ47B battery miniature circuit breaker is a new product specially developed for low-voltage batteries such as photovoltaic solar UPS. DZ47B battery circuit breaker supports overload protection between 12-240V and short-circuit protection between 36-240V. The battery circuit breaker adopts B-curve (3-5ln) tripping capability, sensitive to tripping; battery circuit breaker has 1 pole to protect the positive or negative pole, 2 poles to protect the positive and negative poles at the same time, 1P+1P switches 2 positive power supplies or 2 negative power supplies (switching standby Power supply and common power supply), 2P+2P switching 2 battery switches (switching standby power supply and common power supply), four specifications; the minimum current of the battery switch can be 1A, and the maximum current can reachDZ47B battery miniature circuit breaker is a new product specially developed for low-voltage batteries such as photovoltaic solar UPS. DZ47B battery circuit breaker supports overload protection between 12-240V and short-circuit protection between 36-240V. The battery circuit breaker adopts B-curve (3-5ln) tripping capability, sensitive to tripping; battery circuit breaker has 1 pole to protect the positive or negative pole, 2 poles to protect the positive and negative poles at the same time, 1P+1P switches 2 positive power supplies or 2 negative power supplies (switching standby Power supply and common power supply), 2P+2P switching 2 battery switches (switching standby power supply and common power supply), four specifications; the minimum current of the battery switch can be 1A, and the maximum current can reach 150A.


NORMAL OPERATING CONDITIONS AND INSTALLATION CONDITIONS

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.


MAIN TECHNICAL PARAMETERS

Electrical Features
Rated Current 1-150A
Poles 1P 2P 1P+1P 2P+2P
Rated Voltage Ue DC12-240V
Insulation Volage Ui 500V
Rated Frequency 50/60Hz
Rated Breaking Capacity 2000A
Rated Impulse Withstand Voltage Uimp 3kV
Dielectric Test Voltage At And Ind. Freq.For 1min 1kV
Thermo-Magnetic Release Characteristic B (3In ~ 6In)
Electrical Life 4000
Mechanical Life 20000
Installation
Contact Position Indicator YES
Protection Class IP20
Reference Temperature For Setting Of Thermal Element 30°C
Storage Temperature -25°C~+70°C
Terminal Connection Type Phillips Screws
Suitable For Cable Cross-Section 6-63A 1.5-25MM²;80-150A 4-35MM²
Tightening Torque 2.5-3.0N.m
Mounting 35MM DIN Rail or M4 Side Mounted
Ambient Temperature(With Daily Average ≤35°C) -5°C~40°C

TRIPPING CHARACTERISTIC CURVE


TECHNICAL PARAMETERS

7.1 Rated short-circuit breaking capacity of DZ47B

Trip Type Rated Current Rated short-circuit
breaking capacity AV
COSΦ
B 1≤In≤40 6000 0.65~0.70
B 40<In≤63 4000  

7.3 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 B All values 1.13ln t≤1h Non tripping Cold
2 B All values 1.45ln t<1h Tripping Immidiately after
the last test
3 B ≤32 2.55ln s Tripping Cold
B >32 1s
4 B All values 2ln t≤0.1s Non tripping Cold
B 3ln
5 B All values 3ln t≤0.1s Tripping Cold
B 6ln

Circuit breaker temperature compensation coefficient

Rated current
In(A)V
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
B 1-150A 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
32 6
40-50 10
63-80 16
100 25
125-150 35


OUTLINE AND INSTALLATION DIMENSIONS



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