DZ47BSD Manual Transfer Switch 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 1P+1P to switch 2 positive power supplies or 2 negative power supplies (switching standby Power supply and common power supply), 2P+2P to switch 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.

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	1-150A
Poles	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
High Operating VoltageHigh Breaking Capacity
Contact Position Indicator	YES
Protection Class	IP20
Reference Temperature For Setting Of Thermal Element	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;80-150A 4-35MM²
Tightening Torque	2.5-3.0N.m
Mounting	35MM DIN Rail or M4 Side Mounted

TRIPPING CHARACTERISTIC CURVE

Rated short-circuit breaking capacity of DZ47B

Trip Type	Rated Current	Rated short-circuit breaking capacity	COSΦ
B	1A≤In≤40A	6000A	0.65~0.70
B	40A＜In≤63A	4000A	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	B	All values	1.13In	t≤1h	Non tripping	Cold
2	B	All values	1.45In	t<1h	Tripping	Immediately after the last test
3	B	≤32	2.55In	s	Tripping	Cold
		>32		1s
4	B	All values	2In	t≤0.1s	Non tripping	Cold
			3In
5	B	All values	3In	t≤0.1s	Tripping	Cold
			6In

Circuit breaker temperature compensation coefficient

Rated Current In (A)	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 Current	≤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	35