;
会员登陆
用户名:
密 码:
会员找回密码
用户名:
请输入要找回密码的用户名
My inquiry
all products
Lighting
Hid Flood Light
Hid Spot Light
Tennis ＆Green House ＆Tunnel Light
Recessed ＆Surface Mount Light
Explosion-Proof ＆ Pendant Light
Plastic Flood Light
Flood Light
Wall Light
Ceiling Light
Supended Aluminum Down Reflector
Suspended PC/Acrylic Down Reflector
Gear Box
Suspended Down Reflector Accessories
Aluminum Reflector
Ground Light
Spot ＆ Hanging Light
Dump-Proof Down Light
Recessed Down Light
Surface Mount Down Light
Road Light
Down Light
Spot Light
Sensor Spot Light
Sensor Area Light
Pir Sensor
Micro-Wave Sensor
Photo Controller
Receptacle for Photo Controller
Halogen Flood Light
Halogen Sensor ＆ Halogen Stand Light
LED Bulb
LED Plate
LED Starfall Light
T5/T8 LED Integrated Light ＆ T5/T8 LED Fitting
LED Emergency Light
LED Strong ＆ Torch Light
LED Head Lamp
Power Supply
Dimmable LED Driver
Constant Voltage LED Driver
Constant Current LED Driver
LED Table ＆ Ceiling Flexible Light
LED Ceiling Light
Super Thin LED Ceiling Light
LED Recessed ＆ Surface Mount Down Light
LED Spot Light
LED Flexible Strip ＆ LED Rope Light
LED Wall Washer Lamp
LED Step Light
LED Wall Light
LED Road Light
LED Down Light
LED Projector
Induction Lamp
Induction Light
Induction Road Light
LED Ground Light
Step Light
Cabinet Light
LED Tube
Sound Controller
Lantern and Garden Light
Bulkhead Light Aluminum
Wall Light Aluminum
Bulkhead Light Plastic
Wall Light Plastic
Lantern Plastic
Garden Light Stainless Steel
Spot Light Aluminum
Lantern Light Aluminum
Post Lantern Aluminum
Garden Light Aluminum
Post Light Aluminum
Garden Light Plastic
Solar Figure Light
Solar Light
Lantern Light Plastic
Lawn Light Plastic
LED Lawn Light
Fluorescent Light ＆ Indoor Light ＆ LED Application
T4/T5 Electronic Fluorescent Fitting
T5 Electronic Fluorescent Fitting
T8 Electronic Fluorescent Fitting
T8 Magnetic Fluorescent Fitting
T5/T8 Magnetic Fluorescent Fitting
T5/T8 Fluorescent Fitting
T8 Fluorescent Fitting
T5 Fluorescent Fitting
LED Fluorescent Fitting
T5/T8 Fluorescent Fitting For Tunnel
Explosion-Proof Fluorescent Light
Ceiling Light
Ceiling Spot Light
Track Spot Light
LED Track Spot Light
Grille Light
LED Grille Light
LED Down Light
Wall Light
Pendant Light
Table Lamp
LED Writing Board
LED Clearance Marker
T8 Louver Fitting
T5 Louver Fitting
Down Light
Lamp ＆ Decoration Light
Energy-Saving Lamp
Fluorescent Lamp
Plant Growth Metal Halide Lamp
Aquarium Metal Halide Lamp
Fishing Metal Halide Lamp
Metal Halide Lamp
Ceramic Metal Halide Lamp
High Pressure Mercury Lamp
Blended High Pressure Mercury Lamp
High Pressure Sodium Lamp
Dichroic Halogen Lamp
Neon Indicator
Decoration Lamp
Bicycle Lamp
Strobe Light
LED Revolving Warning Light
LED Strobe Light
Camera
Traffic Baton
Electronic Siren/Buzzer/Motor Siren
Fishing Net Light
Fishing Light
Road Stud
Rechargeable Emergency Twin Light
Exit Light
Wall Mounting Emergency Light
Revolving Warning Light
Night Light
Rope Light
Belt Light
LED Rope Light
Decorative Light
LED Decoration Bulb
Outdoor Spot Bulb
Infrared Bulb
A 19 Bulb 12V/24V
High Temperatre Bulb
Anti-Vibration Bulb
Incandescent Bulb
Refrigerator Bulb
Reflector Bulb
Halogen Lamp
Horticulture Lamps
Warning light
Multi-Level Signal Tower
Marine LED Signal Light
Control Gear Power Supply
Fluorescent Lamp Ballast
Explosion-Proof Ballast
Magnetic Transformer
Water-Proof Magnetic Transformer
HID Magnetic Ballast
Gear Boxes
Water-proof Terminal Box
Automatic Voltage Regulator
DC Regulated Power Supply
Single/Dual Output Adjustable DC Power Supply
Step Up ＆ Down Transformer
Contact Type Voltage Regulator
Uninterruptible Power Supply (UPS)
Capacitors
Starters
Ignitors
T5 Electronic Ballast
T5/T5HO/PL Electronic Ballast
T5/T5HO/T8/PL/T12HO Electronic Ballast
T8 Electronic Ballast
T8 Economic Type Electronic Ballast
T8/T12 Economic Type Electronic Ballast
T5/T8 Economic Type Electronic Ballast
PL/20/Circular Lamp Electronic Ballast
2D Electronic Ballast
2D/Circular Lamps Economic Type Electronic Ballast
PL Electronic Ballast
Special Design for Replacing the Electromagnetic Ballast
PL/T5/T8 Dimmable Electronic Ballast
Emergency Electronic Ballast
HID Electronic Ballast
Electronic Transformer
Electronic Ballast 2V DC Input
Electric Appliances Parts Hardwares
Circuit Breaker
Surge Protective Device
AC Contactor
Can Starter
Button Switch
Toggle Switch
Rocker Switch
Current Transformer
Timer
Relay
Counter
Solenoid Valve
Air Cylinder
Meter Series
Insulation Resistance Tester
Electronic Compact Scale
Metal Detector
Electric Bell
Bus Bar Insulator
Distribution Box
Load Centers
Audio ＆ Video Cable
Spliter ＆ Connector
Antenna
Insect Killer
Fan Series
Door Bell
Electroprobe
Currency Detector
Electric Soldering Lron
Hot Air Gun
Electric Water Heater
Crimping Pliers
Wire Grip
Universal Joint
Hinge
Lock
Track
Insulation Materials Series
Metal Isolator
Knife Switch
Control station
Micro Switch
Limit Switch
Fuse Holder
Indicator Light
Binding Post
Pedal Switch
Pressure Switch
Fluid Level Switch
Thermostat
Rotary Encoder
Magnetic Proximity Switch
Hall Proximity Switch
Capacitive Proximity Switch
Photo Sensor
Power Saving Device
Infrared Thermometer
Fire Button
Buzzer
Plastic Meter Box
Speaker Cable
Coaxial Cable
USB Plug Set
School Kit
Photocatalyst Mosquito Lamp
Smoke Sensor
Fire Flasher
Sealed Acid Battery
Lantern Battery
Hair Dryer
Electric Shower Head
Electric Egg Beater
Pistol Type Soldering Iron
Tin Absorption Pump
Thermosol Gun
Soldering Element
Capper
Pipe Vise
Pipe Diestock
Electric Stove
Heating Wire
Heating Element
Stripper
Telephone Wire
Power Adapter
Alarm
Garage Guard
Wire Cable
Power Cable
Electric Wire
Speaker Cable
SPT Cord
Aerial Cable
Coaxial Cable
Feeder Wire
Telephone Cable
Microphone Wire
RCA Cable
Fiber Cable
Network Cable
Rubber Cable
Silicone Rubber Wire
Teflon Wire
Porcelain Accessories
Medium Porcelain Lampholder E26/E27
Lampholder Adaptor
Small Porcelain Lampholder E14/E17
Mogul Porcelain Lampholder E39/E40
Porcelain Lamp Socket E10 E12 E14 E17
Porcelain Lamp Socket E27
Porcelain Lamp Socket B22
Porcelain Receptacle
Porcelain Holder B22 E27
Brass ＆ Iron-Plated Brass Lampholder
Copper/Nickel-Plated Copper/Brass/Aluminum Screwshell
CR Series Knife Switches
HK-1 Series Knife Switches
HK-15 Series Knife Switches
ST Series Knife Switches
Porcelain Lamp Socket
On-Off Fused Switch ＆ Overload Protection Switch
Fuse Base
RT16 Series Filled and Enclosed Cartridge Knife Contactor Fuse Link
RT12 Connecting Bolt Type Fuse Link
RT15 Connecting Bolt Type Fuse Link
Screw Type Fuse Unit ＆ Cylindrical Contact Caps Fuse/Fuse Cartridge/Fuse Links/HRC Fuse Links
RCIA Series Porcelain Plug-in Fuse Units
Pole Fuse
DO DⅡ DⅢ Series Rectangle type Fuse Units
Oven Lampholder
Porcelain Connector ＆ Terminal
Low-Voltage Pin Insulators for Telephone Lines
Triangle Form Fuse Units
Strain Insulators
Shackle Insulators
Spool Insulators
Porcelain Lampholder for special Size
Porcelain Insulators
Insulators
Screw-Plug Fuse
Box Design Sample
Electric Accessories Wiring Devices
Fixed Switch and Socket-outlet
Bed Switch
Pedal Switch
Push-on Switch
Rocker Switch
Fused Switch
Portable Plug
Travel Adaptor Series
Portable Plug and Connector
Locking Plug and Socket-Outlet
Plug and Socket-Outlet
Plastic Panel Cover
Switch and Socket-outlet for Appliances
Plug Adaptor Series
Multi Socket-Outlet
Panel Switch ＆ Socket Series
Lampholder
Soldering Iron Connector
Fluorescent Lampholder
Fluorescent Lampholder Parts
Telephone Wiring Box
Portable Socket-outlet
Cable Reel
Extension Cord-set
Industrial Connector
Fixed Socket-outlet
Aquarium Lamp
Work Lamp
Work Light
Cable Clamp
Terminals
Plastic Conduit Box
Ground Socket-outlet
Cable Tie
Steel Band Clamp
Heat-shrinkable Tubings
Tie Gun
Cable Puller
Mounting Box
Lay-in Grounding Lugs
Booster Cable
LED Work Light
Conduit Fittings Wiring Devices
Aluminum Conduit Fitting
Aluminum Conduit Fitting Set Screw
Threaded ＆ Set Screw Conduit Fitting
Cover Gaskets
Malleable Conduit Fitting
Round Boxes
Weatherproof Outlet Boxes
Deep Weatherproof Outlet Boxes
4〞Round-Weatherproof Outlet Boxes
4〞Round-Weatherproof Extensions
Weatherproof Extensions
Self-Closing GFCI Covers
Power Outlet Covers
Self-Closing Covers
Round ＆ Rectangular Raised Covers
Blank Covers
Lampholder Accessories
Sensor Lights
Cabinet Light
Enclosure Plug
Knock Out Seals
Reducing Washers
Hit Lock Connector
Nail Safety Plates
Liquidtight Sealing Gaskets
Locknuts
Steel Locknuts with Screw
Bushing
Liquid-Tight Connector
Squeeze Connector
Inside Corner Pull Elbows
Offset Connectors
Connector Set Screw
Coupling Set Screw
Connector for Rigid Conduit ＆ IMC
Coupling for Rigid Conduit ＆ IMC
Connector Compression
Coupling Compression
Flex Connectors
90°Short Ells
Combination Couplings
Duplex Connectors
BX Connectors
Saddle Type Connectors
Clad Cable Connector
Clamp Connector
Duplex Connector
Threaded Hub
Interior Flex Connector
Interior Flex Coupling
Interior EMT to Flex Connectors
Entrance Cap
Pull Elbows
Coupling for Threaded Rigid Conduit
Extended Nipples Steel
Conduit Nipple
Reducing Bushing
Diameter Flared Connector
EMT Connector Steel
EMT Coupling Steel
GI Coupling Steel
Strap Connector Steel
Connector Malleable
Coupling Malleable
Conduit Nipple Malleable
Conduit Hubs Malleable
Pull Elbows Malleable
Offset Conduit Nipples
Electroform Pipe Insert
Male Adapter PVC
Three Piece Coupling
Conduit Bender
Inspection Elbow Malleable
Strap Steel
Distance Saddle Malleable Base
Spacer Bar Saddle
Strap
Porcelain Channel Saddle
Strut Channel
Strut Clamps
Conduit Hanger
Conduit Fastener
Hanger
Beam Clamp
Channel Nut with Spring
Swivel Hanger
Ground Clamps
Split Bolt Connector
U Bolts
Insulated Staple
Crampet Steel
Nail Strap
Straight Tube
Elbow Tube
Intermediate Conduit Tube
GI Conduit Tube
All Threaded Bar
Rigid Conduit Nipple
Flexible Conduit
Conduit Boxes Steel
Extension Steel
Switch Boxes Steel
Junction Box
Welded Boxes
Covers Steel
Device Rings
Meter Sockets
GAK Series Safety Switches
Accessories Fuses
HUB
One gang-stay open"snap-seal"covers
Three-gang device covers
Lay-in grounding lugs
Steel lugs included
Stainless steel sealing ring
Replacement block assemblies
High Voltage Insulators Protection Devices
Disc Suspension Insulators
Anti-Pollution Type Disc Suspension Insulators
Direct Current Porcelain Suspension Insulators
Cap and Pin Type Anti-Pollution Glass Suspension Insulators
Cap and Pin Type D.C. Glass Suspension Insulators
Pin Type Insulators
Spindle for Pin Insulators Line Post
Line Post Insulators
Station Post Insulators
Anti-Pollution Post Insulators
Long-Rod Suspension Porcelain Insulators
Drop-Out Fuse Cut Out
Outdoor Limit-Current Fuse
Surge Arresters
Spare Devices for Arresters
Isolated Switches
High Voltage Vacuum Circuit Breaker/Road
SF6 Breaker
Composite Suspension Insulators
Composite Station Post Insulators
Composite Line Post Insulators
Composite Cross-Arm Insulators
Model[composite] Cut-Out Fuse
Cable Connectors Series
Cold Shrinkable Cable Component
High Volage Current Limit Fuse Link
Home
>
all products
>
Control Gear Power Supply
>
Fluorescent Lamp Ballast
Name:
DS4-20/40-2
ID:
DS4-20/40-2
Power:
Material:
Number:
220V-240V 50-60HZ
30×42mm
1×15W/18W/20W/22W/24W/26W
1×30W/32W/36W/40W
2×15W/18W/20W
Related Products
MH-507
IE-045
MH-509B
MH-509A
MH-508B
My inquiry
