Class II, Div 2 Switches and Pilot Lights for Hazardous Locations

[DM2-Inc]

502.115(B) States:

"...enclosures for fuses, switches, circuit breakers, and motor controllers, including push buttons, relays, and similar devices, shall be dusttight or otherwise identified for the location"​

I'm looking for switches and pilot lights for a Class II, Division 2 locations and want to mount them in a NEMA 4X Enclosure. The voltage is 24 VDC (ref 502.25). I'm not seeing a lot of switches and lights, with a certification for Class II, Division 2 locations.

Can I simply use push buttons and pilot lights rated as NEMA 4, or 4X?

 

[rbalex]

What is the Group? Other than for Group E, a "dusttight" enclosure is sufficient. See Table 110.28 IN No. 1 for enclosure Types that are recognized to be "dusttight".

 

[DM2-Inc]

I'm not sure about the Group.
With regard the Switches and Lights, I don't see a "Class II, Div 2" certified Light, which leads me to believe that a weatherproof light, which would have a rubber gasket, or rated NEMA 4X (not sure NEMA 4, or 4X would apply to a switch or light), would be acceptable by code?

 

[petersonra]

NEMA enclosure ratings are not used any more. UL type ratings are the norm these days.

 

[DM2-Inc]

I'm interested in the switches and pilot lights. See my previous post.

 

[petersonra]

I'm interested in the switches and pilot lights. See my previous post.

As a practical matter, NEMA ratings no longer apply to anything that would seal an opening in an enclosure either. Like a pilot light.

 

[rbalex]

I'm not sure about the Group.
With regard the Switches and Lights, I don't see a "Class II, Div 2" certified Light, which leads me to believe that a weatherproof light, which would have a rubber gasket, or rated NEMA 4X (not sure NEMA 4, or 4X would apply to a switch or light), would be acceptable by code?

If you don't know the Group, someone (not necessarily you) is already in violation of Section 500.4(A). What material is the dust?

 

[StarCat]

Eaton 10250T/E34
Pushbuttons and Indicating Lights for Class 1, DIV.2 Locations.
I installed some of these. The contact blocks are a trick and the first ones sent did not work correctly.
Tech support somehow got it sorted out with a different part number. They can be configured with 24V lamps. LED bulbs are available.

 

[rbalex]

Eaton 10250T/E34
Pushbuttons and Indicating Lights for Class 1, DIV.2 Locations.
I installed some of these. The contact blocks are a trick and the first ones sent did not work correctly.
Tech support somehow got it sorted out with a different part number. They can be configured with 24V lamps. LED bulbs are available.

You did notice the OP is asking about Class II, right?

 

[StarCat]

I totally overlooked that. Sorry for that. I am currently running with one eye patched for going on 8 weeks now, and I miss a lot of detail.