FN7-12DXLRAF Load Break Switch With Impact Fuse With Motorised Switching Device

Specification
Technical parameters

FN7 Load break switch Overview

FN7-12DR AC high-voltage load switch is a new type of gas-producing indoor high-voltage load switch, suitable for AC 50Hz, rated voltage 12KV three-phase AC power system, as the opening and closing of load current and short-circuit current.
FN7 (C)-12 series high-voltage load switch and fuse combination is on the basis of FN7-12 series high-voltage load switch, increase the side operation mechanism, make the installation more simple and convenient, can meet the different requirements of the majority of users.

Normal usage environment

1. The upper limit of ambient air temperature: +40 degrees, the lower limit: -25 degrees;
2. The altitude does not exceed 1000m;
3. Relative humidity: the daily average value is not greater than 95%, and the monthly average value is not greater than 90%;
4. The earthquake intensity does not exceed 8 degrees;
5. Places without risk of fire, explosion, chemical corrosion and severe vibration;
6. Pollution level: Level II;
7. The surrounding air should not be significantly polluted by corrosive or flammable gases and water vapor.

FN7-12DXLRAF Load Break Switch Technical parameters

Item	Unit	Data
Rated voltage	kV	12
Rated current	A	400	630
1min power frequency withstand voltage	kV	42/48
4S thermal stable rated current (effective value)	kA	12.5	20
Dynamic stable current (peak value)	kA	31.5	50
Short circuit making current	kA	31.5	50
Rated breaking current	A	400	630
Rated transfer current	A	1000

FN7-12DXLRAF load break switch overall dimension drawing reference

FN7 Model Reference

Type	Model	DS	DX	L	R	RA	F
Type	Model	Earthing switch at input terminal	Earthing switch at output terminal	Interlock device	Fuse	Impact release	Power closing device
No release	FN7-12	–	–	–	–	–	–
	FN7-12DSL	△	–	△	–	–	–
	FN7-12DXL	–	△	△	–	–	–
	FN7-12R	–	–	–	△	–	–
	FN7-12DSLR	△	–	△	△	–	–
	FN7-12DXLR	–	△	△	△	–	–
With impact release	FN7-12RAF	–	–	–	–	△	△
	FN7-12DSLRAF	△	–	△	–	△	△
	FN7-12DXLRAF	–	△	△	–	△	△

Note: (-)without (△)with

Ordering instructions
1. Model, name and quantity of load break switch.
2. If equipped with a fuse, please specify the type, rated voltage and rated current of the fuse.

FN7-12C 12kV High Voltage AC Manual Type Load Break Switch With Panel Operation

Specification
Technical parameters

FN7-12C 12kV load break switch product overview

FN7-12 AC high-voltage load break switch is a new type of gas-generating indoor high-voltage load switch. It is suitable for three-phase AC power systems with AC 50Hz and rated voltage 12kV. It is used to break load current and close short-circuit current.
The FN7(C)-12 series of high-voltage load break switches and fuse combination appliances are based on the FN7-12 series of high-voltage load break switches and add a side operating mechanism, making the installation simpler and more convenient and able to meet the different requirements of users.

FN7-12C load switch normal usage environment

1. The upper limit of ambient air temperature: +40 degrees, the lower limit: -25 degrees;
2. The altitude does not exceed 1000m;
3. Relative humidity: the daily average value is not greater than 95%, and the monthly average value is not greater than 90%;
4. The earthquake intensity does not exceed 8 degrees;
5. Places without risk of fire, explosion, chemical corrosion and severe vibration;
6. Pollution level: Level II;
7. The surrounding air should not be significantly polluted by corrosive or flammable gases and water vapor.

FN7-12C 12kV high voltage load break switch technical parameters

Item	Unit	Data
Rated voltage	kV	12
Rated current	A	400	630
1min power frequency withstand voltage	kV	42/48
4S thermal stable rated current (effective value)	kA	12.5	20
Dynamic stable current (peak value)	kA	31.5	50
Short circuit making current	kA	31.5	50
Rated breaking current	A	400	630
Rated transfer current	A	1000

Overall dimension drawing reference

FN7-12 Model Reference

Type	Model	DS	DX	L	R	RA	F
Type	Model	Earthing switch at input terminal	Earthing switch at output terminal	Interlock device	Fuse	Impact release	Power closing device
No release	FN7-12	–	–	–	–	–	–
	FN7-12DSL	△	–	△	–	–	–
	FN7-12DXL	–	△	△	–	–	–
	FN7-12R	–	–	–	△	–	–
	FN7-12DSLR	△	–	△	△	–	–
	FN7-12DXLR	–	△	△	△	–	–
With impact release	FN7-12RAF	–	–	–	–	△	△
	FN7-12DSLRAF	△	–	△	–	△	△
	FN7-12DXLRAF	–	△	△	–	△	△

Note: (-)without (△)with

Ordering instructions
1. Model, name and quantity of load break switch.
2. If equipped with a fuse, please specify the type, rated voltage and rated current of the fuse.

FN18 12kV 3 Phase Gang Operated Air Load Break Switch With Earthing Device And Fuse Switch Nalf

Specification
Technical parameters

FN18 12kV 3 Phase Gang Operated Air Load Break Switch Product Overview

FN18 load switches and load switch-fuse combinations are high-voltage, high-performance load switches combining compressed-air arc extinguishing and gas-produced arc extinguishing.
The combination of load switch and fuse combines the advantages of the load switch with those of the fuse to switch any load current up to the rated breaking current of the load switch, and to switch any overcurrent up to the rated short-circuit breaking current of the combination by means of the operation of the fuse and its impinger.

1.Ambient temperature:
Maximum +40°C Maximum 24 hour average +35°C
Minimum (according to “minus 5 indoorclass” )-15°C.
2.Humidity:
Daily average ambient air relative humidity≤95%, on average≤90%;
Saturated vapor pressure of daily mean values s 2.2 X 10-3Mpa, on averages 1.8 x10- 3Mpa;
Maximum site altitude:s 1000 M above sea level

FN18 12kV Air Load Break Switch Technical parameters

Rated voltage		Unit	12kV			17.5kV			24kV			36kV			40.5kV
Rated current		A	400	630	1250	400	630	1250	400	630	1250	630	800	1000	630	800	1000
Max.rated current		A	400	630	1250	400	630	1250	400	630	1250	630	800	800	630	800	800
Short circuit making capacity		KA peak	67			50			50			50			50
Peak withstand current*		KA peak	82			82			82			66			66
Short time current	1 sec.	KA eff	31.5 25 20	31.5 25 20	31.5 25 20	31.5 25	31.5 25	31.5 25	25 25 16	25 25 16	31.5 25 16	25	25	25	25	25	25
	2 sec.
	3 sec.
Mainly active load breaking capacity (test duty 1 and, IEC 60265-1( 265))		A	400	630	1250	400	630	1250	400	630	1250	630	800	630	800	630	800
Mainly capacitive breaking capacity (test duty 4, IEC 60265-1 (IEC 265))		A	150			45			80			50			50
Mainly inductive breakingcapacity cosφ=0.15		A	16			16			16			16			16
Max. breaking capacity in co-operation with fuses IEC 62271-105(IEC 420 1990-11)		A	1600	1600		1600	1600		900	900		300*	300	300	300	300	300
Power frequency withstand voltage 50 Hz 1 min. -to earth and between poles -across isolating distance		kV	42 45			45 60			55 70			80 88			95 120
Impulse withstand voltage 1.2/50 μs – to earth and between poles – across isolating distance		kV	75 85			95 110			125 145			170 195			190 220
Pole distance		mm	150, 170, 210			170,210			170,235,275			360			360
Max. operating torque at: -closing K/A mech. -opening K/A mech.		Nm	115-120 Nm K-mech.120 Nm/A-mech. 3Nm									80-100 Nm K-mech.80-100 Nm
Operating angle on the shaft		degree	130									120
Opening time		ms	40-60									60

FN18 Outline Dimension Drawing

FN18 load break switch structure

Medium Voltage RMU SF6 Load Break Switch 10kV 630A For Incoming Line

Specification
Technical Parameters

Medium Voltage RMU SF6 Load Break Switch 10kV 630A For Incoming Line

FLN36-12kV SF6 load break switch is a switch equipment for medium voltage switchgear, using SF6 gas as arc extinguishing and insulating medium. There are three working positions: open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.
It can be divided into two types: FLN36-12D ( K type single spring operating mechanism ), FLRN 36-12D (A type double spring operating mechanism). The latter type could be equipped with fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit, cable distribution box and switching substation.

Basic functions and features
1. Load breaker switch adapts double fracture, rotary movable contact structure, with the following three kinds of operating states: Closing, opening, earthing.
2. Using SF6 gas as an arc extinguishing and insulating medium, the main circuit seals by the upper and lower housing pouring epoxy resin, the conductive function is unaffected by external influences.
3. Good safety performance. If internal arcing occurs, the housing has an internal structure weak point, it will be rushed to open, followed by the cabinet above the shutter release arc red open air overpressure stream-oriented outside the cabinet, ensure that the switch cabinet security checks.
4. Load breaker switch sets gates, opening, earthing switch three at one, filled with SF6 gas encapsulated in epoxy resin housing, three-position interlock,compact structure,high security and reliability.
5. Small size, light weight, maintenance-free, easy and safe to operate.

Normal working Environment

1. Altitude: ≤1000m
2. Ambient temperature at -30ºC to +40ºC, the daily average temperature should not more than 30ºC.
3. The daily average of relative humidity is less than 95%, the average monthly is less than 90%.
4. Working environment should be without steam, gas, chemical corrosive deposition, salt fog, dust, dirt and other dangerous explosive media, which will severely impact on insulation and conductivity of products.
5. Working environment should not be regular vibration or serious bumps.
PS: Products with special requirements, specifications and dimensions that need to be improved can be designed and manufactured according to user requirements.

Medium Voltage RMU SF6 Load Break Switch 10kV 630A For Incoming Line

Technical Parameters

Item	Unit	Data
Item	Unit	FLN36-12D/T630-20 Load break switch	FLRN36-12D/125-50 LBS + Fuse-combination units
Rated voltage	kV	12	12
Rated frequency	Hz	50	50
Rated current	A	630	125
Short-duration(1min) power frequency withstand voltage	kV	42	42
Lightning impulse withstand voltage	kV	75	75
Rated power frequency withstand voltage(5min)	kV	24	24
Rated short-time withstand current(Load break switch/3s)	kA	20	20
Rated short-time withstand current(Earthing switch/2s)	kA	20	20
Rated peak withstand current(Load break switch)	kA	50	50
Rated peak withstand current(Earthing switch)	kA	50	50
Rated short-circuit making current(Load break switch)	kA	50	125
Rated short-circuit making current(Earthing switch)	kA	50	50
Rated closed-loop dropout current	A	630
Rated active load breaking current	A	630
Rated cable-charging breaking current	A	10	10
Rated short-circuit breaking current	kA		50*
Rated transfer current	A		1750*
Fuse type			XRNT-12kV/125A*
Fuse impact output energy	J		1±0.5
Mechanical endurance LBS/Earthing switch	Time	5000/2000	5000
Air insulation distance of charged body and ground	mm	≥ 125	≥ 125
SF6 Gas pressure(Relative pressure at 20℃ )	bar	0.4	0.4
Opening and Closing simultaneity	ms	≤ 2	≤ 2
Main circuit resistance	μΩ	≤ 65	≤ 65

SF6 load break switch structure

12kV 200mm 3 Phase Switch with Manual Operating Mechanism Sf6 Lbs Air Load Break Switch

Specification
Structure

12kV 200mm 3 Phase Switch with Manual Operating Mechanism Sf6 Lbs Air Load Break Switch

FLN36-12kV SF6 load break switch is a switch equipment for medium voltage switchgear, using SF6 gas as arc extinguishing and insulating medium. There are three working positions: open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.
It can be divided into two types: FLN36-12D ( K type single spring operating mechanism ), FLRN 36-12D (A type double spring operating mechanism). The latter type could be equipped with fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit, cable distribution box and switching substation.

Basic functions and features
1. Load breaker switch adapts double fracture, rotary movable contact structure, with the following three kinds of operating states: Closing, opening, earthing.
2. Using SF6 gas as an arc extinguishing and insulating medium, the main circuit seals by the upper and lower housing pouring epoxy resin, the conductive function is unaffected by external influences.
3. Good safety performance. If internal arcing occurs, the housing has an internal structure weak point, it will be rushed to open, followed by the cabinet above the shutter release arc red open air overpressure stream-oriented outside the cabinet, ensure that the switch cabinet security checks.
4. Load breaker switch sets gates, opening, earthing switch three at one, filled with SF6 gas encapsulated in epoxy resin housing, three-position interlock,compact structure,high security and reliability.
5. Small size, light weight, maintenance-free, easy and safe to operate.

Normal working Environment

1. Altitude: ≤1000m
2. Ambient temperature at -30ºC to +40ºC, the daily average temperature should not more than 30ºC.
3. The daily average of relative humidity is less than 95%, the average monthly is less than 90%.
4. Working environment should be without steam, gas, chemical corrosive deposition, salt fog, dust, dirt and other dangerous explosive media, which will severely impact on insulation and conductivity of products.
5. Working environment should not be regular vibration or serious bumps.
PS: Products with special requirements, specifications and dimensions that need to be improved can be designed and manufactured according to user requirements.

Technical Parameters

Item	Unit	Data
Item	Unit	FLN36-12D/T630-20 Load break switch	FLRN36-12D/125-50 LBS + Fuse-combination units
Rated voltage	kV	12	12
Rated frequency	Hz	50	50
Rated current	A	630	125
Short-duration(1min) power frequency withstand voltage	kV	42	42
Lightning impulse withstand voltage	kV	75	75
Rated power frequency withstand voltage(5min)	kV	24	24
Rated short-time withstand current(Load break switch/3s)	kA	20	20
Rated short-time withstand current(Earthing switch/2s)	kA	20	20
Rated peak withstand current(Load break switch)	kA	50	50
Rated peak withstand current(Earthing switch)	kA	50	50
Rated short-circuit making current(Load break switch)	kA	50	125
Rated short-circuit making current(Earthing switch)	kA	50	50
Rated closed-loop dropout current	A	630
Rated active load breaking current	A	630
Rated cable-charging breaking current	A	10	10
Rated short-circuit breaking current	kA		50*
Rated transfer current	A		1750*
Fuse type			XRNT-12kV/125A*
Fuse impact output energy	J		1±0.5
Mechanical endurance LBS/Earthing switch	Time	5000/2000	5000
Air insulation distance of charged body and ground	mm	≥ 125	≥ 125
SF6 Gas pressure(Relative pressure at 20℃ )	bar	0.4	0.4
Opening and Closing simultaneity	ms	≤ 2	≤ 2
Main circuit resistance	μΩ	≤ 65	≤ 65

FN18 High Voltage Load Break Switch Nalf Air Insulation Switch Breakers

Specification
Technical parameters

FN18 Load Break Switch Nalf Switch Product Overview

FN18-口is a general purpose, three-pole, load break switch that offers switchgear owners and assemblers the advantages of an advanced interrupting technology and proven, dependable performance in a compact design. The switch is available to switchgear assemblers as a building block for metal-enclosed and pad-mounted switchgear applications in ratings from 12-40.5 kV.
The standard FN18 switch includes a heavy-duty steel frame with stand-off insulators, a unique puffer-type arc extinguishing system, an operating mechanism and current-carrying components, including blade-type interrupters with cast hinges and jaw connectors.
Optional accessories and features include a variety of operating handles, a motor operator, auxiliary switches, a shunt trip device, fuse bases, mechanical fuse tripping, grounding switches, mechanical door interlocking and key interlocking.

FN18 series indoor high-voltage load switch has the advantages of easy design, operation, compact structure, small volume, full function, light weight, fast breaking and closing speed and high reliability. It is suitable for AC 50Hz, rated voltage 12kV, 24kV, rated current 630A and three-phase distribution system, especially for city network construction and renovation projects, high-rise buildings, ring network power supply of public facilities, and is an ideal product for box-type substation and transformer protection.

FN18 Nalf Air Insulation Switch Breakers Fuse Switch Technical parameters

Rated voltage		Unit	12kV			17.5kV			24kV			36kV			40.5kV
Rated current		A	400	630	1250	400	630	1250	400	630	1250	630	800	1000	630	800	1000
Max.rated current		A	400	630	1250	400	630	1250	400	630	1250	630	800	800	630	800	800
Short circuit making capacity		KA peak	67			50			50			50			50
Peak withstand current*		KA peak	82			82			82			66			66
Short time current	1 sec.	KA eff	31.5 25 20	31.5 25 20	31.5 25 20	31.5 25	31.5 25	31.5 25	25 25 16	25 25 16	31.5 25 16	25	25	25	25	25	25
	2 sec.
	3 sec.
Mainly active load breaking capacity (test duty 1 and, IEC 60265-1( 265))		A	400	630	1250	400	630	1250	400	630	1250	630	800	630	800	630	800
Mainly capacitive breaking capacity (test duty 4, IEC 60265-1 (IEC 265))		A	150			45			80			50			50
Mainly inductive breakingcapacity cosφ=0.15		A	16			16			16			16			16
Max. breaking capacity in co-operation with fuses IEC 62271-105(IEC 420 1990-11)		A	1600	1600		1600	1600		900	900		300*	300	300	300	300	300
Power frequency withstand voltage 50 Hz 1 min. -to earth and between poles -across isolating distance		kV	42 45			45 60			55 70			80 88			95 120
Impulse withstand voltage 1.2/50 μs – to earth and between poles – across isolating distance		kV	75 85			95 110			125 145			170 195			190 220
Pole distance		mm	150, 170, 210			170,210			170,235,275			360			360
Max. operating torque at: -closing K/A mech. -opening K/A mech.		Nm	115-120 Nm K-mech.120 Nm/A-mech. 3Nm									80-100 Nm K-mech.80-100 Nm
Operating angle on the shaft		degree	130									120
Opening time		ms	40-60									60

FN18 Outline Dimension Drawing

FN18 load break switch structure

Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

Specification
Structure

Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

The sf6 load break switch is a kind of switchgear with a simple arc extinguishing device. It uses SF6 gas as the insulation and arc extinguishing medium. It can be used as the closing and breaking load current and overload current. It can also be used as the closing and breaking no-load. Lines, no-load transformers and capacitor banks, etc., all three-position load switches with on, off and grounding functions are simple in structure and affordable. In addition to long life, strong breaking force and other advantages of vacuum load switch, its outstanding advantages are easy to achieve three working positions (on, off and ground), small current (inductance, capacitance) breaking, anti- Strong environmental conditions. It is suitable for promotion and application in urban and rural medium voltage distribution networks.

Newly developed load break switch, applied on SF6 RMU, with features of high efficiency, safety, reliability, simple structure, flexible operation, interlock reliable, easy to install and so on.

It satisfies with standard IEC94, GB3804, GB16926 and so on.

Normal ambient condition

1. Altitude: ≤2000M
2. Ambient temperature:from-40℃ to +40℃
3. Relative humidity: daily average ≤95%, monthly average ≤90%.
4. Earthquake intensity: ≤8 degree
5. Ambient air should not significantly contaminated corrosive, flammable gas, vapor, etc., should be no recurrent severe vibration.
6. Annual leakage rate: ≤0.1%.

Technical parameters

Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

No.	Item	Unit	Data
1	Rated voltage	KV	24
2	Rated frequency	Hz	50
3	Rated current	A	630
4	1 min power frequency withstand voltage	KV	65
5	Lighting impulse withstand voltage	KV	125
6	Rated short circuit breaking current(peak)	KA	20
7	Rated activeload and circuit breaking current	A	630
8	Rated transferring current	A	630
9	Rated short circuit making current(peak)	KA	50
10	Rated cable(line)charging breaking current	A	10
11	Phase distance	mm	230
12	Rated withstand current(peak)	KA	50
13	Short time withstand current(2s)	KA	20
14	Mechanical life	Time	5000

Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

SF6 load break switch applications

Gas Pressure Gauge With Alarm Function Monitoring alarm barometer For SF6 Load Break Switch

Specification
Parameters
Types

Gas Pressure Gauge With Alarm Function Monitoring alarm barometer For SF6 Load Break Switch

Used to detect the density of SF6 gas in a closed container, widely used in medium voltage switchgear and GIS, can be used in outside hard conditions.
Small volume, special customized installation interface,convenient and reliable. The pressure interface can be customized according to customer requirements.
Multiple switch action contacts can be provided according to user requirements.

Features

1. The electrical contact switch design realizes accurate, stable and reliable SF6 gas density monitoring function.
2. With temperature compensation, the compensation performance is stable and the detection accuracy is high.
3. On-site display values and output contact signals are not affected by external conditions such as altitude and on-site ambient temperature changes.
4. The core components are imported materials with high precision.
5. It has good seismic performance.
6. With up to three groups of contacts, it can realize various options such as overpressure alarm, double alarm or double lock, and the monitoring is more secure and reliable.
7. The SF6 gas density relay can be inflated, micrometered and calibrated without disassembling the SF6 gas density relay, which is convenient for on-site personnel to perform micrometering and replenishment operations on the SF6 gas density relay, and avoid the sealing surface caused by disassembly. and damage to the sealing ring.
8. 304 stainless steel is used to make the sealed shell, which is moisture-proof and anti-corrosion.

Shell diameter	φ60mm
Shell Material	Stainless steel
Measurement Range	1-2 bar(abs.)
Measurement accuracy	1.5 grades(at 20℃）；2.5 grades(at-40℃ to +60℃）（gas state）
Working environment	Temperature-40℃ to +60℃，Relative humidity≤95%RH
IP Grade	IP65
Absolute leakage rate	≤1X10-9Pa.m³/（helium leak-check）
Size of interface	M24X1.5(Customize)
Installation	Axial direction
Weight	0.3kg
Pressure sensitive component	Bourdon tubes

New Design 35kV 40.5kV Indoor Three Work Positions SF6 Load Break Switch For Ring Main Unit Switchgear

Specification
Parameters
Drawing
PDF download

New Design 35kV 40.5kV Indoor Three Work Positions SF6 Load Break Switch For Ring Main Unit Switchgear

FLN36 -40.5 SF6 load break switch use SF6 gas as arc extinguishing and insulating medium. There are three work stations:opening, closing and grounding in the switch. It has small volume, installing easy-to-use, strong environmental adaptability and other characteristics.
FLN36-40.5 load break switch and FLN -40.5D load break switch plus fuse combination, can be used to protect and control the electric equipments for power supply and transformer substations, which is especially suitable for ring net cabinet, cable branch cabinet and distribution switching substation.

Normal ambient condition:
1. Altitude: ≤2000M
2. Ambient temperature: -40℃-+40℃
3.Relative humidity: daily average ≤95%, monthly average ≤90%.
4.Earthquake intensity: ≤8 degree

Technical Parameter

No.	Item	Unit	Data
1	Rated voltage	kV	40.5
2	Rated frequency	Hz	50
3	Rated current	A	630
4	1 min power frequency withstand voltage	kV	95
5	Lighting impulse withstand voltage	kV	185
6	Rated short circuit breaking current(peak)	kA	20
7	Rated activeload and circuit breaking current	A	630
8	Rated transferring current	A	630
9	Rated short circuit making current(peak)	kA	63
10	Rated cable(line)charging breaking current	A	10
11	Cable charge breaking current in earthing fault	A	30
12	Rated withstand current(peak)	kA	63
13	Short time withstand current(2s)	kA	20
14	Mechanical life	Time	5000

40.5KV SF6 load break switch

35kv 350mm LBS

FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

FN7-12DR AC High Voltage Load Break Switch

FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

Specification
Technical Parameters

FN7-12DR Load Break Switch Product Overview

FN7-12DR type indoor AC off-voltage load break switch is applicable to AC 50Hz, rated voltage 12KV in the three-phase AC power system as a load current breaking and closing short-circuit current use, the combination of electrical appliances can open any current up to short-circuit current, can be used as protection.

Feature
1. Adopting high quality brand new raw materials, full oblique seams, refusing refurbishment
2. The load switch equipped with grounding switch can withstand short-circuit current
3. The stainless steel shell is thickened

Ambient condition

1. Altitude: ≤1000m;
2. Ambient temperature: -25℃~+40℃;
3. Relative humidity: daily average ≤95％, monthly average ≤90％;
4. Earthquake intensity: ≤8 degree;
5. Applicable occasions should free from inflammables, explosives, corrosives and severe vibration.

FN7 Model Type

Type	Model	DS	DX	L	R	RA	F
Type	Model	Earthing switch at input terminal	Earthing switch at output terminal	Interlock device	Fuse	Impact release	Power closing device
No release	FN7-12	–	–	–	–	–	–
	FN7-12DSL	△	–	△	–	–	–
	FN7-12DXL	–	△	△	–	–	–
	FN7-12R	–	–	–	△	–	–
	FN7-12DSLR	△	–	△	△	–	–
	FN7-12DXLR	–	△	△	△	–	–
With impact release	FN7-12RAF	–	–	–	–	△	△
	FN7-12DSLRAF	△	–	△	–	△	△
	FN7-12DXLRAF	–	△	△	–	△	△

Note: (-)without (△)with

FN7-12DR Load Break Switch Technical parameters

Rated voltage (KV)	11
Max voltage (kV)	12
Rated current (A)	400/630
1min P.F withstand voltage (kV)	42/48 42/48
4s thermal stable current (virtual)(kA)	12.5/20
Dynamic stable current (peak)(kA)	31.5/50
Short circuit making current (kA)	31.5/50
Rated breaking current (A)	400/630
Rated transfer current (A)	1000/1000

FN7-12DR Dimensions reference

Diagram 1 “Wire” load break switch without release

Diagram 2 “transformer protection” load break switch without release

Diagram 3 Release impact load break switch

Diagram 4 CS6 Operating mechanism mounting drawing

FN7-12DXLRAF Load Break Switch With Impact Fuse With Motorised Switching Device

FN7 Load break switch Overview

Normal usage environment

FN7-12DXLRAF Load Break Switch Technical parameters

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FN7-12C load switch normal usage environment

FN7-12C 12kV high voltage load break switch technical parameters

FN7-12 Model Reference

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FN18 12kV 3 Phase Gang Operated Air Load Break Switch Product Overview

FN18 12kV Air Load Break Switch Technical parameters

FN18 Outline Dimension Drawing

FN18 load break switch structure

FN18 High Voltage Load Break Switch Nalf Air Insulation Switch Breakers

FN18 Load Break Switch Nalf Switch Product Overview

FN18 Nalf Air Insulation Switch Breakers Fuse Switch Technical parameters

FN18 Outline Dimension Drawing

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Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

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FN7-12DR Load Break Switch Product Overview

FN7-12DR Load Break Switch Technical parameters

FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

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