40.5Kv Outdoor SF6 Circuit Breaker

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1. Product Overview
a. The 40.5Kv outdoor SF6 circuit breaker is a there-phase AC 50Hz or 60Hz high voltage electrical apparatus. It is applicable to the control and protection of the 40.5kV transmission and distribution system. It can also serve as an interconnecting circuit breaker and be used for opening and closing capacitor bank.
b. This product is in line with the requirements of GB1984-1989 "AC High Voltage Circuit Breaker" and IEC56 "AC High Voltage Circuit Breaker".
c. Using the SF6 gas as the insulating and arc extinguishing medium, this product has excellent breaking performance. The dielectric strength recovers fast and heavy breakdown is difficult to occur. With short arcing time, our product has a long electrical life.
d. With no risks of combustion or explosion, our product can be applied in densely populated areas.
e. This product is equipped with high-performance CT14 electric spring mechanism which features small operating power and high reliability.
f. A current transformer can be provided for measurement and protection.

2. Technical Parameters
a. Circuit Breaker

No.	Item	Unit	Data
1	Rated voltage	kV	35
2	Max. voltage	kV	40.5
3	Rated current	A	1600/2000	1600/2000/2500/3150
4	Lowest ambient temperature	℃	-40	-30
5	Rated pressure of SF6 gas (gauge pressure at 20℃)	MPa	0.40	0.50
6	Weight (including operating mechanism)	kg	1400 (1000 for ceramic column type)

Remark: This product is equipped with a SF6 density relay. This relay can not only display the pressure of SF6 gas but also automatically correct the influence of temperature on the pressure. The displayed pressure is the value at 20℃. In addition, this density relay can send low pressure alarm and blocking signals.

b. Closing Solenoid

Rated voltage (V)	DC48	DC110	DC220	AC220	AC380
Rated current (A)	10.5	4.6	2.3	3.5	2
Coil resistance at 20℃ (Ω)	4.5	24	95	3.9	10.2
Operating voltage range	85%~110% rated operating voltage

c. Tripping Solenoid

Rated voltage (V)	DC48	DC110	DC220	AC220	AC380
Rated current (A)	13.7	6	3	3.5	2
Coil resistance at 20℃ (Ω)	3.5	18.3	74.3	7	23.5

3. Service and Installation Conditions
Ambient temperature: -30℃~ 40℃ (special order: - 40℃~ 40℃)
Elevation: ≤1000m (if the product is used above 1000m, customers should inform us in advance)
Humidity: Daily average ≤95%; Monthly average ≤90% (25℃)
Wind speed: ≤35m/s
Creepage distance: 25mm/kV or 31mm/kV
Keep the breaker away from places with combustible, explosive, corrosive materials or violent vibrations.

Related Names
High Voltage Circuit Breaker | 3 Pole Circuit Breaker | Outdoor Electrical Switch

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