Is this fitting rated for Zone 1?

No. The 6602/12 Ex nR is certified Ex nR IIC T6 Gc, which is a Zone 2 gas classification , the "Gc" equipment protection level and restricted-breathing ("n") protection method are specifically defined for Zone 2 use, not Zone 1. On the dust side it's rated Ex tb IIIC T85°C Db for Zone 21/22. A Zone 1 gas application requires a flameproof (Ex d, "Gb"-rated) fitting instead.

What's the difference between Zone 1 and Zone 2 classification?

Zone 1 covers areas where an explosive gas atmosphere is likely to occur during normal operation. Zone 2 covers areas where it's only likely to occur infrequently and briefly, if at all. Equipment protection levels (Gb for Zone 1, Gc for Zone 2) reflect that risk difference, and equipment rated for one zone isn't automatically suitable for the other, more demanding zone.

What efficiency and lifespan does this luminaire offer?

130 lm/W luminaire efficacy across both available sizes, with a rated service life exceeding 60,000 hours even at +55°C ambient temperature.

What sizes are available?

Size 2 (22W, 2,860 lm) and Size 4 (44W, 5,720 lm), both with 120°×120° light distribution through diffusing glass.

Can it be mounted on a pole?

Yes, using the pole mounting sleeve accessory (for 42mm pipe diameter) or the broader range of pole mounting accessories covering Ø38–60mm in stainless steel.

How is maintenance access handled?

Via a Smart Central Locking System, opened using the dedicated box spanner accessory , designed for quick access without extensive tool use, reducing maintenance downtime.