OptiLine basic lighting fixtures ATEX for zones 21, 22, and 2 – HARDO

OptiLine basic lighting fixtures ATEX 12
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OptiLine – basic lighting fixtures

for EX zones 21, 22, and 2

Explosion-proof cable glands for non-armored cables hardo 4

Dustproof and resistant to strong jets of water and UV radiation, this linear explosion-proof LED fixture is certified for gas zone 2 as well as dust zones 21 and 22. Designed for general lighting of halls, industrial spaces, production and storage areas with special consideration for the requirements of the petrochemical, chemical, oil, energy, gas, wood, paper, and food industries. The OptiLine fixture is designed to minimize the total lighting installation costs for investors.

3 types of diffusers

2 lengths and 6 power options

22 directing lenses

OptiLine basic lighting fixtures ATEX
OptiLine basic lighting fixtures ATEX
OptiLine basic lighting fixtures ATEX

Basic technical data:

Certificates: ATEX, IECEx, CNBOP
ATEX (dust): II 2 D
ATEX (gas): II 3 G
IECEx (dust): Ex tb IIIC T70oC Db
IECEx (gas): Ex ec IIC T4 Gc

Material of enclosure: GRP
Material of diffuser: UV stabilized PC (Polycarbonate)
Impact resistance: HIGH (acc. to EN IEC 60079-0)
IP: IP66/IP67
Fixture lenght: 670 / 1276 mm

CRI: >80 (optional >70 and >90)
Ambient temperature: from -40oC to +50oC
Color temperature: 4000K (3000K or 5000K)
Number of cable glands: up to 4
Cable gland size: M20 and M25

OptiLine basic lighting fixtures ATEX
OptiLine basic lighting fixtures ATEX
OptiLine basic lighting fixtures ATEX
OptiLine basic lighting fixtures ATEX

All parameters were measured at a temperature of 25°C, a color temperature of 4000K, CRI >80. Tolerance for the value of light flux +/-5%. Power tolerance +/-5%. The table presents fixtures with a transparent diffuser (KT) – light values and efficiency of the complete fixture will differ for fixtures with frosted and opal diffusers. imensions are given considering the mounting with a D18 ceiling bracket. Other mounting systems are also available.

Product typeFluminous
flux [lm]
Power [W]Whole fixture efficacy [lm/W]Flux emergency
power [lm]
Ambient temperature [oC]Approximate weight [kg]Dimension L [mm]Dimension L1 [mm]Dimension B [mm]Dimension B1 [mm]Dimension H [mm]
OptiLine 60-1****** KT348520,08173nd.-40 ÷ +503,45670400173157119
OptiLine 60-2****** KT442224,80178nd.-40 ÷ +503,45670400173157119
OptiLine 60-3****** KT518229,70175nd.-40 ÷ +503,45670400173157119
OptiLine 12-1****** KT673938,20176nd.-40 ÷ +505,801276800173157119
OptiLine 12-2****** KT866547,92181nd.-40 ÷ +505,801276800173157119
OptiLine 12-3****** KT1034257,60179nd.-40 ÷ +505,801276800173157119
OptiLine basic lighting fixtures ATEX
OptiLine basic lighting fixtures ATEX

How do we reduce the costs of lighting installation?

For over 20 years, we have been designing and delivering lighting fixtures to explosion hazard zones. During this time, we have diagnosed many bottlenecks that can significantly increase the total costs of lighting installation for investors. By creating the independently operating company HARDO from the WOLFF GROUP, we decided to manufacture lighting fixtures in such a way that, while maintaining high-quality products, we could minimize costs for investors.

In the following animations, we only presented 2 of many solutions that reduce the costs of lighting installation.

No junction boxes, fewer cables

We’ve eliminated the need for expensive Ex junction boxes, which also reduced the amount of necessary cabling along with the trays.

OptiLine lighting fixtures ATEX
OptiLine lighting fixtures ATEX

Adjusting the light direction with lenses

OptiLine is a lighting fixture that eliminates the need for mounting special brackets to direct light to important places (switches, valves, extinguishers, etc.). Why is it unique? Because it offers the possibility to use as many as 22 lenses mounted on the LED module. They allow changing the direction of light without additional accessories, which is not possible in most competitive fixtures.

Exceptionally wide range of luminous power with high efficiency of the complete fixture

OptiLine lighting fixtures ATEX

The ATEX OptiLine lighting fixture is distinguished by its versatility:

  • It comes in two lengths (600 mm and 1270 mm),
  • Each length is available in three power variants,
  • For each variant, one of three types of diffusers can be chosen.

In total, this provides 18 possible configurations of basic lighting fixtures (+ 22 possible directional lenses) allowing to achieve a light flux from 2931 lm up to 10342 lm. All this is possible while maintaining very high efficiency – the efficiency values for the complete basic lighting fixture range from 146 lm/W to 181 lm/W.

Not so obvious, but changing reality competitive advantages

Fixtures in versions: transparent, frosted, and opal

The EX LED OptiLine series of lighting fixtures offers remarkable versatility thanks to three types of diffusers: transparent, frosted, and opal. Each provides a slightly different light transmittance, suitable for different applications of the fixture in an industrial plant.

OptiLine basic lighting fixtures ATEX

Transparent diffuser

The transparent diffuser is ideal for areas that require strong lighting, both outdoors and in large indoor spaces.

  • Highest light fluxes – up to 10342 lm
  • Highest flexibility – in this case, you can use 22 directing lenses
OptiLine lighting fixtures ATEX

Frosted diffuser

The frosted diffuser is a great choice outdoors as well as indoors, where light intensity is important, but at the same time, you need to reduce glare.

  • Light fluxes up to 9981 lm without glare
  • Gently diffused light
OptiLine lighting fixtures ATEX

Opal diffuser

The opal diffuser, with its light dispersion, provides comfortable interior lighting, ideal for creating a pleasant work atmosphere.

  • Light fluxes up to 8747 lm without glare
  • Perfect for interiors
OptiLine lighting fixtures ATEX 12

Innovative solution with glands and power connectors

Many lighting fixtures on the market have significant limitations regarding the number and size of cable glands, resulting in higher installation costs. Particularly, fixtures with a single gland or with a factory-exited cable require the use of expensive ATEX junction boxes and more installation materials. The Ex OptiLine fixture is innovative in this context, offering the possibility of mounting up to four M20 or M25 glands. This feature allows for direct connection of the lamps, reducing the need for additional junction boxes and materials, which is particularly beneficial in the case of installations involving a larger number of fixtures.

Want to use flame-retardant cables or those with larger cross-sections? No problem!

The explosion-proof OptiLine fixture allows the use of M25 glands, increasing the range of cables with larger cross-sections. This gives users flexibility in choosing cable manufacturers and the ability to use thicker, flame-retardant wires. Moreover, the larger diameter of glands allows for the use of cables with larger cross-sections of conductors, which is key in reducing voltage drops, especially in critical emergency lighting systems that must operate at temperatures exceeding 600°C

From an installer’s perspective: safe and quick installation

OptiLine lighting fixtures ATEX

Quick opening, power connection, and subsequent closing of the fixture, when installing dozens or hundreds of lamps, translates into real savings of working hours. The diffuser and mounting plate on hinges and captive screws are another facilitation. You don’t need to find a place to put them down. Nothing will fall, get lost, or get damaged. The absence of loose parts means that nothing occupies your hands and mind. It also eliminates the risk of damaging the machines below and contaminating the manufactured product.

The latches in the diffuser according to the ATEX directive require the use of a tool, and if necessary, the diffuser can be detached from the body.”

About the manufacturer of fixtures – HARDO company

Polish company

The only 100% Polish producer involved in both lighting and electrotechnics in an explosion-proof execution.

From practitioners to practitioners

HARDO lighting fixtures and other products were created as a result of hundreds of hours spent talking to designers, installers, and end-users.

Key values: high availability, competitive price

The production plant and warehouse located in Poland allow for maintaining constant availability of fixtures, which affects not only the price but also the speed of order execution.

Ex lighting – offer

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We specialize in industrial lighting, with a particular focus on facilities where there is: dust, corrosive atmosphere, explosion and fire hazards.


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Ex LED lighting

Our light fittings combines the latest LED technology with the protection of a reliable housing solution. As a result, they are the ideal solution for lighting tasks in harsh and hazardous environments.

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Ex-Signal and escape sign luminaires

The EXIT series of explosion-protected escape sign lumi­naires fulfils the requirements of ATEX Directive 2014/34/EU and EN 60598, Section 2.22 for emergency lighting lumi­naires. The luminaires are suited for marking escape routes and exits in hazardous areas.

Secure your industrial plant

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