4 Inch 48W Utility High Intensity LED Work Light E-Mark Approved Version 2
The SLL-4048 is a 4 inch high intensity LED work light designed for machines operating in extreme conditions across agriculture, forestry, mining, roadwork and construction. It delivers 3200 effective lumens from 16 x 3W Bridgelux LEDs, ensuring clear visibility in dark or dusty environments. The E-Mark approval allows use on public roads, while IP68 sealing and a die-cast aluminium housing resist water, dust and vibration during continuous operation.
- 3200 effective lumens spread evenly across the work area, reducing shadows on excavators and loaders
- E-Mark approval ensures compliance with European road lighting regulations for machines used on public roads
- IP68 sealing and a durable polycarbonate lens prevent water ingress and fogging after repeated wash cycles
- 9 to 32V DC operation supports both 12V and 24V vehicle systems, reducing the number of SKUs needed
- Overvoltage and overheat protection extend service life under unstable electrical conditions
Where This Lamp Is Used
- Front and side work lighting on excavators and backhoe loaders during night shifts in mining operations
- Cab and boom lighting on forestry harvesters operating in dense woodland with limited visibility
- Auxiliary lighting on roadwork vehicles and construction machinery used on public roads
- Machine edge lighting on agricultural tractors and tillers where vibration and dust are constant
- Forklift and crane lighting in enclosed warehouses and outdoor yards with high humidity
Who It Is For
- Distributors of industrial vehicle lighting needing one part number for 12V and 24V fleets
- Machinery OEMs integrating lighting into production lines with consistent mounting and electrical specs
- Fleet operators replacing halogen lights that fail under vibration and high heat
- 4x4 and construction accessory brands building a private label work light line with E-Mark compliance
- Equipment dealers fitting lights on machines sold in Europe and other E-Mark regulated markets
Problems It Solves
- Halogen work lights fail early under vibration and draw excessive current, overloading alternators
- Non-certified auxiliary lights are rejected during road inspections in Europe due to electromagnetic interference
- Cheap sealed lamps let water in through the cable entry and fog up after a few pressure washes
- Narrow spot beams leave the near working area dark, increasing risk during machine operation
- Painted mild steel brackets corrode quickly in wet or salty environments, leading to mounting failure
Technical Features
- 16 x 3W Bridgelux LEDs with a total real power draw of 48W and 3200 effective lumens
- Flood or spot beam options available to match the machine’s operational needs
- Die-cast aluminium housing with durable UV polyester powder coating for long-term outdoor use
- Anti-UV, anti-scratch polycarbonate lens resists impact and maintains clarity over time
- Overvoltage and overheat protection circuits prevent damage from electrical surges or blocked airflow
- Operating voltage range of 9 to 32V DC covers 12V and 24V systems without part number changes
- Sealed cable entry gland with silicone gasket maintains IP68 rating during washing
- Rated for -40 to +85 degrees Celsius, suitable for extreme cold and hot climates
- Bare wire lead of 40cm standard, with connector options available on request
Technical Specification
Values taken from the original factory specification for this model. Fields the factory sheet does not state are left out rather than estimated.
| Part Number | SLL-4048 |
|---|---|
| Max Power | 48W |
| LED | 16 pcs x 3W Bridgelux |
| Beam Pattern | Flood or Spot (optional) |
| Colour Temperature | 6000K |
| Operating Voltage | 9–32V DC |
| Housing Material | Die-cast aluminium |
| Lens Material | Anti-scratch polycarbonate |
| Waterproof Rating | IP68 |
| Operating Temperature | -40 to +85 degrees Celsius |
| Electrical Connection | Bare wire 40cm, connector available |
| Certification | E-Mark, CE, RoHS |
Materials Used
- Die-cast aluminium housing with UV polyester powder coating
- Anti-scratch, UV-resistant polycarbonate lens
- Silicone rubber gasket and sealed cable entry gland
- Bare wire lead with insulation rated for 32V DC
How This Lamp Is Built
Die casting of the aluminium housing and heat sink
Powder coating with UV polyester finish in semi-gloss black
LED board assembly with Bridgelux emitters and driver circuit
Lens bonding and gasket sealing to maintain IP68 rating
Quality Control on This Model
- Photometric output verified in an integrating sphere
- Sealing verified against the IP68 rating before shipment
- Vibration testing on a vibration test machine to simulate machine-mounted service
- Salt spray corrosion testing on housing coating and stainless bracket
- High and low temperature alternating humidity testing across the -40 to +85 degrees Celsius range
Customisation Options
- Spot beam optics instead of the standard flood pattern
- Deutsch DT connector instead of the standard 40cm bare wire lead
- Private label logo on the housing and printed carton
- Alternative cable length to match a specific machine harness
- Mixed cartons combining this lamp with other SUNLITEC models for trial orders
How It Compares With the Alternatives
| Halogen work lamp of similar output | Draws 4A at 12V against roughly triple that for halogen and survives vibration that kills a filament |
|---|---|
| Round 4 inch work lamp | The square body puts more LED area behind the same mounting footprint but needs a flat surface for the bottom bracket |
| Spot beam version of the same lamp | Flood covers the near working area evenly while spot reaches further ahead but leaves the machine edges dark |
| Larger 6 inch work lamp | Lower output but fits guard rails and cab pillars where a 6 inch body will not clear |
How to Fit and Use It
- Wire through a fused feed sized for 4A at 12V or 2A at 24V and keep the cable entry pointing downward
- Leave a drip loop in the 40cm lead so water runs away from the gland rather than into it
- Aim the flood beam at the working area close to the machine and use a spot lamp separately for distance
- Clean the PC lens with water and a soft cloth only, since solvents will haze the anti-scratch coating
Questions About This Model
Can I order a sample before placing a bulk order
Yes. Sample orders are welcome and mixed samples of different models in one shipment are accepted.
What is the lead time
Sample orders normally take around 3 to 7 working days. Bulk lead time depends on the model and the quantity ordered.
Do you have a minimum order quantity
There is an MOQ for standard orders, but smaller orders are also accepted, which suits distributors testing a new model.
How is the lamp shipped
Samples usually go by DHL, UPS, FedEx or TNT in around 4 to 7 days. Bulk orders ship by air in about 7 to 15 days or by sea in about 15 to 30 days.
Will this lamp work on both 12V and 24V machines
Yes. The operating range is 9 to 32V DC, so the same part number can be fitted to 12V and 24V vehicles.
Can you supply the lamp with our own brand
Yes. OEM and ODM service is available, including a private label logo on the housing and printed cartons.
Is it approved for road going machines
Yes. The lamp carries E-Mark approval for electromagnetic compatibility and is CE and RoHS compliant.
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