6 Inch 40W Utility LED Work Light EMC CISPR25 CLASS 4
The SLL-6040 is a 6 inch utility LED work light designed for machines that operate in harsh environments with continuous vibration, extreme temperatures, and exposure to water and dust. Four 10W CREE LEDs deliver 3200 effective lumens in a bright and even beam pattern, providing consistent illumination across the work zone without hot spots. The die-cast aluminium housing with UV polyester powder coating resists corrosion, while IP68 sealing and overvoltage and overheat protection ensure reliable operation on 12V and 24V fleets. The lamp meets EMC CISPR25 CLASS 4 standards, which prevents electrical interference that could disrupt vehicle electronics.
- 3200 effective lumens in a bright and even flood or spot beam pattern, eliminating dark edges around the work area
- IP68 sealing and a robust cable entry gland prevent water and dust ingress during pressure washing or outdoor use
- EMC CISPR25 CLASS 4 compliance ensures no interference with vehicle control systems, critical for fleet and OEM applications
- Overvoltage and overheat protection prevent damage from electrical surges or prolonged high ambient temperatures
- 9 to 32V operating range allows one part number to serve both 12V and 24V machines, reducing SKU complexity
Where This Lamp Is Used
- Front and side work lighting on excavators and cranes operating in rain and mud
- Cab and roof lighting on agricultural tractors and harvesters during night field operations
- Auxiliary lighting on service trucks and utility vehicles used in remote or unlit areas
- Loading and unloading zone lighting on tipper trucks and container handlers
- Support lighting on mining and engineering vehicles where electrical noise from other systems can cause interference
Who It Is For
- Distributors of industrial vehicle lighting needing a single part number for 12V and 24V systems
- Machinery OEMs integrating work lights into production lines with consistent mounting and electrical specs
- Fleet operators replacing halogen lights that fail under vibration and draw excessive current
- 4x4 and equipment accessory brands developing a private label utility light range with EMC compliance
Problems It Solves
- Halogen work lights fail early under vibration and draw more current than LED alternatives
- Cheap sealed lamps let water in through the cable entry and fog up after a few wash cycles
- Uncertified lighting can cause electromagnetic interference that disrupts vehicle sensors or ECUs
- Narrow spot beams leave the near work area dark, while unbalanced flood beams create uneven light distribution
- Painted metal housings and brackets corrode quickly on machines washed daily with water or chemicals
Technical Features
- Four 10W CREE LEDs with a real power draw of 40W and a maximum rating of 40W
- Bright and even beam pattern with 3200 effective lumens, available in flood or spot beam options
- Semi-gloss black UV polyester powder coating over the full housing and bracket
- Bare wire lead of 40cm as standard with Deutsch connector available on request
- EMC protected wiring and overvoltage and overheat protection circuits
- Operating window of -40 to +60 degrees Celsius, suitable for arctic and desert environments
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-6040 |
|---|---|
| Max Power | 40W |
| Real Power | 40W |
| LED | 4 pcs x 10W CREE |
| Beam Pattern | Flood or Spot |
| Colour Temperature | 6000K |
| Operating Voltage | 9-32V DC |
| Lens Material | Anti-scratch, UV resistant polycarbonate |
| Waterproof Rating | IP68 |
| Operating Temperature | -40 to +60 degrees Celsius |
| Electrical Connection | Bare wire 40cm, Deutsch connector available |
| Certification | EMC CISPR25 CLASS 4, CE, RoHS |
Materials Used
- Anti-scratch UV resistant polycarbonate lens
- Silicone rubber gasket and sealed cable entry gland
- UV polyester powder coating on housing and bracket
How This Lamp Is Built
Die casting of the aluminium housing and heat sink
Powder coating in semi-gloss black with UV protection
LED board assembly with CREE emitters
Lens bonding and gasket sealing
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 reproduce machine mounted service
- Salt spray corrosion testing on housing coating and stainless bracket
- High and low temperature alternating humidity testing across the -40 to +60 degrees Celsius window
- EMC CISPR25 CLASS 4 compliance tested in a shielded chamber
Customisation Options
- Deutsch DT connector instead of the standard 40cm bare wire lead
- Spot beam optics in place of the flood pattern
- Private label logo on the housing and printed carton
- Alternative cable length for a specific machine harness
- Mixed cartons combining this lamp with other SUNLITEC models for trial orders
How It Compares With the Alternatives
| Round 6 inch work lamp | The square body puts more LED area behind the same mounting footprint but needs a flat surface for the bottom bracket |
|---|---|
| Flood beam version of the same lamp | Spot beam reaches further ahead but leaves the machine edges dark, while flood covers the near working area evenly |
| Larger 8 inch work lamp | Lower output but fits guard rails and cab pillars where an 8 inch body will not clear |
How to Fit and Use It
- 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
The lamp is CE and RoHS compliant and carries EMC CISPR25 CLASS 4 certification, which is required for interference control on vehicles with electronic systems.
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