SDC EP499 Series Explosion Pro...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,862.00
$1,837.74
SDC SDC EP499 Series - Explosion Proof Mushroom Button Exit Switches SDC-EP499

SDC EP499 Series Explosion Proof Mushroom Button Exit Switch with Class I Zone 1 Certification

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Model: EP499
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,862.00
$1,837.74
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SDC EP499 Series Explosion Proof Mushroom Button Exit Switch with Class I Zone 1 Certification

Hazardous Location Exit Switch for Chemical Plants and Refineries

The SDC EP499 Series explosion proof mushroom button exit switch is specifically engineered for hazardous environments where flammable vapors pose safety concerns, including clean rooms, chemical plants, and refinery facilities. This certified exit switch eliminates sparks and arcing through explosion-protected contact blocks and features a 1-1/2"; mushroom button with impact-resistant non-metallic antistatic construction. Rated for Class I Zone 1 and Division 2 applications with IP66 protection and maximum ambient temperature of 150°F (60°C).

Professional Features & Benefits

  • Explosion Proof Certification: Class I Zone 1 AEx de IIC T6...T4 Gb and Class I Division 2 Groups A, B, C, D certification for safe operation in hazardous atmospheres.
  • Hazardous Atmosphere Compatibility: Approved for use with acetone, benzene, methyl alcohol, diethyl-ether, and other specified flammable vapors in industrial environments.
  • Impact-Resistant Construction: Non-metallic antistatic material with corrosion proof design and F1 UV protection for long-term durability in harsh conditions.
  • Temperature Performance: Operating range from -122°F to 140°F with maximum ambient temperature rating of 150°F (60°C) for extreme environment applications.
  • Weatherproof Protection: IP66 rating with silicone gaskets on both enclosure and actuator provides superior moisture and contaminant protection.
  • Professional Installation Features: Clearance for 3/4"; bottom feed NPT fitting and explosion-protected contact blocks ensure safe and reliable connections.
  • Ergonomic Operation: Large 1-1/2"; mushroom button design provides clear visual identification and reliable activation in emergency situations.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Product Category: Electronic Access Controls
  • Product Dimension: 3.95"; x 4.21"; x 4.16";
  • Product Group: Electronic Access Controls
  • Product Model: EP499, EP499-R
  • Product Subgroup: Sensors, Switches, Relays and Timers
  • Product Type: Switches / Push Buttons
  • Series: EP499 Series
  • Subcategory: Button Exit Switches
  • Temperature Range: Minus 122 Degrees F to 140 Degrees F

Professional Applications

  • Chemical Processing Plants and Refineries
  • Clean Room Facilities
  • Pharmaceutical Manufacturing
  • Petrochemical Processing Centers
  • Industrial Paint and Coating Operations
  • Hazardous Material Storage Areas
  • Emergency Exit Systems in Explosive Atmospheres

Why Choose SDC Quality?

SDC EP499 Series explosion proof exit switches deliver certified safety performance with impact-resistant non-metallic construction and corrosion-proof materials rated for extreme temperatures from -122°F to 140°F. Multiple hazardous location certifications including Class I Zone 1 and IP66 protection ensure reliable operation in the most demanding industrial environments. Engineered specifically for applications where flammable vapor safety is critical and dependable emergency exit activation is essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Button Exit Switches
Series:
EP499 Series
Product Group:
Electronic Access Controls
Product Subgroup:
Sensors, Switches, Relays and Timers
Product Type:
Push Buttons Switches
Commercial/Residential:
Commercial
Temperature Range:
Minus 122 Degrees F to 140 Degrees F
Electronic:
Yes
Product Model:
EP499, EP499-R
Product Dimension:
3.95" x 4.21" x 4.16"
Product Category:
Electronic Access Controls
Department:
Door Hardware

SDC EP499 – Frequently Asked Questions

1) Is the SDC EP499 exit switch rated for a Class I Division 2 hazardous area?
Both. The EP499 explosion proof mushroom button carries Class I Zone 1 AEx de IIC T6...T4 Gb and Class I Division 2 Groups A, B, C, D certification, so it covers either classification scheme on the drawing. The contact blocks are explosion protected so the switch will not spark or arc when pressed in a flammable atmosphere.
2) Which flammable vapors is the SDC EP499 explosion proof exit button approved for?
Acetone, benzene, methyl alcohol, diethyl-ether and other specified flammable vapors. That is the vapor group behind the Class I Zone 1 AEx de IIC listing, which is the broadest gas group, so solvent handling rooms, paint and coating lines and petrochemical process areas are the intended use.
3) How is conduit run into the SDC EP499 explosion proof push button?
The enclosure has clearance for a 3/4 inch bottom feed NPT fitting, so it lands on standard 3/4 inch rigid conduit entering from below. Plan the stub-up before the box is set, since the entry is at the bottom rather than the back.
4) What is the difference between the SDC EP499 exit switch and the Camden CM-5000 mushroom pushbutton?
The SDC EP499 is an explosion proof mushroom button exit switch built for hazardous atmospheres, with Class I Zone 1 AEx de IIC T6...T4 Gb and Class I Division 2 Groups A, B, C, D certification, IP66 protection, and a 1-1/2 inch mushroom button on a non-metallic antistatic enclosure. The Camden CM-5000 Series is a 2-3/8 inch mushroom pushbutton with an aluminum faceplate, a standard interior-grade release device. If the opening sits in a refinery, paint line, or solvent storage area where flammable vapors are present, the EP499 is the one certified for that atmosphere; for an ordinary corridor or office egress door, the CM-5000 is the conventional mushroom button and its larger 2-3/8 inch head gives a bigger strike target.
5) Which mushroom exit button latches in the pressed position instead of resetting?
The Camden CM-6000 Series is a 2-3/8 inch red locking mushroom switch, so the button stays in once pressed and has to be released deliberately - the behavior you want where the door should remain held in its commanded state until someone resets it. The SDC EP499 Series is a momentary mushroom button exit switch, with a 1-1/2 inch head, offered with a green or a red button. Specify the EP499 where the opening is in a Class I Zone 1 or Division 2 hazardous area, since the CM-6000 is a standard-environment device.
6) Can a Dortronics 5210 mushroom push button be used in place of an SDC EP499?
Only outside a hazardous location. The Dortronics DRT5211-MP23 is a 5210 Series exit release with a 1-9/16 inch diameter red mushroom push button mounted on a single gang plate and labeled "Push to Exit"/"Emergency Release" - a close match on button size to the 1-1/2 inch head of the SDC EP499, and it arrives with the legend already engraved, which the EP499 does not carry. What it does not carry is the EP499's Class I Zone 1 AEx de IIC T6...T4 Gb and Class I Division 2 Groups A, B, C, D listing, its explosion-protected contact blocks, or its IP66 sealing with silicone gaskets on enclosure and actuator. Mounting differs too: the Dortronics goes on a single gang box, while the EP499 is a 3.95 x 4.21 x 4.16 inch surface enclosure with clearance for a 3/4 inch bottom feed NPT fitting.
7) Can an explosion proof exit button be mounted outdoors or in a washdown area?
The EP499 is IP66 rated with silicone gaskets on both the enclosure and the actuator, so it takes dust and high pressure water jets. The housing is corrosion proof non-metallic with F1 UV protection, which is what lets it sit outdoors rather than only in a covered process room.
8) What temperature range does the SDC EP499 exit switch operate in?
Minus 122 degrees F up to 140 degrees F, with a maximum ambient rating of 150 degrees F (60 degrees C). The bottom of that range is well below anything a normal request-to-exit button survives, so cold storage and cryogenic or LNG adjacent spaces are in scope as well as hot process areas.
9) How much wall space does the SDC EP499 switch enclosure take up?
The EP499 enclosure measures 3.95 x 4.21 x 4.16 inches. That is a surface mounted box, not a device that drops into a single gang ring, so allow clear wall area beside the door plus room under it for the bottom conduit entry.
10) I need an exit button that stays latched in after it is pressed. Is the EP499 the right one?
For a latching action, look at the Camden CM-6000 Series 2-3/8 inch red locking mushroom switch instead. The EP499 is the explosion proof station, chosen for its Class I Zone 1 certification and IP66 enclosure rather than for a maintained-contact function. Pick by the area classification first: if the opening is in a hazardous atmosphere, the certified switch is not optional.
11) What should I use for an exit push button on a cold outdoor door that is not a hazardous location?
Either the Camden CM-5000 Series 2-3/8 inch mushroom pushbutton with aluminum faceplate or the Dortronics 5210 Series 1-9/16 inch red mushroom push button on a single gang plate covers a standard-environment release. Where the deciding factor is temperature and weather rather than atmosphere, the SDC EP499 Series is rated from -122 degrees F to 140 degrees F with IP66 protection and silicone gaskets on both the enclosure and the actuator, and is built from corrosion proof non-metallic material with F1 UV protection - a spread that covers freezer vestibules, exposed loading dock doors, and wash-down areas without asking whether the room is classified.
12) Is the Camden CM-AF500 an alternative to an SDC EP499 exit button?
No - it is a different device on the same wall. The Camden CM-AF500 is a single gang LED "Occupied When Lit" indicator from the CX-WC Series, an annunciator that shows room status; it does not release a door. The SDC EP499 Series is the exit switch itself, a 1-1/2 inch mushroom button that signals the lock to release, certified Class I Zone 1 and Class I Division 2 for hazardous atmospheres. On a classified opening the EP499 does the switching; the CM-AF500 is a standard single gang indicator and belongs on a restroom or exam room door in a normal environment.
13) I need a bigger mushroom head than the SDC EP499 gives me - what are my options?
The SDC EP499 Series uses a 1-1/2 inch mushroom button. Among comparable exit releases, the Camden CM-5000 Series and the Camden CM-6000 Series both use a 2-3/8 inch mushroom, and the Dortronics 5210 Series uses a 1-9/16 inch mushroom on a single gang plate. Those larger heads are standard-environment devices, so the trade is head size against the EP499's Class I Zone 1 and Class I Division 2 certification and IP66 sealing - if the opening is in a classified area, the 1-1/2 inch button is what the certification comes on.
14) What is the difference between the SDC EP499 and the EP499-R?
Both models are part of the same explosion proof mushroom button exit switch series, sharing the Class I Zone 1 and Division 2 certification, the IP66 enclosure and the 1-1/2 inch button. Specify EP499 or EP499-R on the order along with the button color you want.
15) Why is the button on an explosion proof exit switch non-metallic?
Static. The EP499 uses impact resistant non-metallic antistatic material, which keeps the actuator from building a charge that could discharge in a flammable vapor atmosphere, and it also makes the housing corrosion proof for solvent and washdown exposure. A metal faceplate button is the wrong construction in a classified room for that reason.
16) Will the SDC EP499 work in a clean room or pharmaceutical manufacturing space?
Yes. Clean rooms, pharmaceutical manufacturing and hazardous material storage are named applications for the EP499, alongside refineries and petrochemical processing. The sealed IP66 enclosure with silicone gaskets is what makes it suitable where particulate control and solvent vapor are both concerns.
How fast can I get the SDC EP499 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SDC EP499 come with a warranty?
Absolutely. The SDC EP499 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SDC EP499?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SDC EP499 from ZenSupply?
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