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R. STAHL AG
Poster Explosion Protection

Poster Explosion Protection

Product catalog summary

Overview: R. STAHL is a leading global supplier of explosion-protected apparatus and systems, including instrumentation, switching and distribution, installation, lighting, operating and monitoring, and signaling and alarming.

Types of Protection for Electrical Apparatus in Hazardous Areas:

Increased Safety (e): Used for terminal and junction boxes, control boxes, squirrel-cage motors, and light fittings. Standards: EN 60 079-7, UL 60 079-7, IEC 60 079-7, FM 3600.
Flameproof Enclosures (d): Applied to switchgear, control systems, motors, transformers, and heating equipment. Standards: EN 60 079-1, UL 60 079-1, IEC 60 079-1, FM 3600.
Pressurized Enclosures (p): Suitable for switchgear, control cabinets, and large motors. Standards: EN 60 079-2, NFPA 496, IEC 60 079-2, FM 3620.
Intrinsic Safety (i): Used in instrumentation technology and fieldbus technology. Standards: EN 60 079-11, UL 60 079-11, IEC 60 079-11, FM 3610.
Oil Immersion (o): For transformers and starting resistors. Standards: EN 60 079-6, UL 60 079-6, IEC 60 079-6, FM 3600.
Powder Filling (q): Applied to sensors and display units. Standards: EN 60 079-5, UL 60 079-5, IEC 60 079-5, FM 3600.
Encapsulation (m): Used for small capacity switchgear and control units. Standards: EN 60 079-18, UL 60 079-18, IEC 60 079-18, FM 3600.
Type of Protection (n_): For all electrical apparatus in Zone 2. Standards: EN 60 079-15, UL 60 079-15, IEC 60 079-15, FM 3600.
Optical Radiation (op_): Includes inherently safe and protected optical radiation. Standards: EN 60 079-28, IEC 60 079-28.

Types of Protection for Electrical Apparatus in Areas with Combustible Dust:

Protection by Enclosures (tD): For switchgear and control stations. Standards: EN 61 241-1, IEC 61 241-1.
Pressurization (pD): For switchgear and control cabinets. Standards: EN 61 241-4, IEC 61 241-4.
Intrinsic Safety (iD): For measurement and control technology. Standards: EN 61 241-11, IEC 61 241-11.
Encapsulation (mD): For small capacity switchgear. Standards: EN 61 241-18, IEC 61 241-18.

Zones:

Zone 0/20: Continuous or long-term explosive atmosphere.
Zone 1/21: Likely to exist under normal conditions.
Zone 2/22: Not likely to occur or for short periods.

Types of Protection for Non-Electrical Equipment:

Constructional Safety (c): For couplings and pumps. Standard: EN 13 463-5.
Flameproof Enclosures (d): For brakes and couplings. Standard: EN 13 463-3.
Pressurization (p): For pumps. Standard: EN 13 463-7.
Control of Ignition Sources (b): For pumps and belt drives. Standard: EN 13 463-6.
Liquid Immersion (k): For submerged pumps. Standard: EN 13 463-8.
Flow Restricting Enclosure (fr): For equipment in Zone 2 or 22. Standard: EN 13 463-2.

Classes and Groups According to NEC 500:

Class I (Gas): Includes acetylene, hydrogen, ethylene, and propane.
Class II (Dust): Includes metal dust, coal dust, and grain dust.
Class III (Fibers): Includes fibers.

Temperature Classification According to NEC 500: Maximum surface temperatures range from 450°C (T1) to 85°C (T6).

Equipment Groups:

Group I (Mining): Categories M1 and M2 for mining safety.
Group II (Other Hazardous Areas): Categories 1, 2, and 3 for gas and dust atmospheres.

Contact Information: R. STAHL Schaltgeräte GmbH, Am Bahnhof 30, 74638 Waldenburg, Germany. Phone: +49 7942 943-0, Fax: +49 7942 943-4333, Email: [email protected], Website: www.stahl.de

Poster Explosion Protection

Poster Explosion Protection

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