January 2003
8-48
For more information visit: www.cutler-hammer.eaton.com CA08101001E
Safety Switches & Enclosed Circuit Breakers
8
Enclosed Circuit Breakers
Product Selection
Vol. 1, Ref. No. [0286]
NEMA 12 Dustproof Surface
Mounting
No Knockouts or Other Openings
15 – 1200 Ampere Range
600V AC, 500V DC
The Type 12 enclosure is designed
in line with specifications for special
industry application where unusually
severe conditions involving oil, coolant,
dust and other foreign materials exist in
the operating atmosphere. The handle
padlocks in the OFF position and the
cover is interlocked with the handle
mechanism to prevent opening the
cover with the circuit breaker in the
ON position. Ratings through 1200
amperes are listed by Underwriters
Laboratories as suitable for service
entrance application. A NEMA 12 semi-
dust-tight design which includes knock-
outs is available. These units are rated
15
– 400 amperes, 600V AC, 500V DC.
■ UL File Number E7819.
■ CSA File Number LR84319.
NEMA 12 Dustproof Surface Mounting
NEMA 7/9 Hazardous Location
Cast Aluminum, Explosion-proof
Surface Mounting 15 – 1200 Ampere Range
600V AC, 250V DC
Hazardous location, Type 7: Class I,
Groups B, C, D; Type 9: Class II, Groups
E, F, G. This special service cast alumi-
num enclosure is supplied with a wide,
machined flanged cover to prevent
igniting outside atmospheres by arc-
ing from inside the enclosure. Front
operable, the handle padlocks in the
OFF position. Enclosures rated 600
amperes and above have lift-off
hinges for ease of assembly.
Note: XFDN050B is not Group B compliant.
■ UL File Number E84577.
■ CSA File Number LR42131-6.
NEMA 7/9 Hazardous Location
Features, Benefits
and Functions
■ Side-opening door on NEMA 3R
enclosures.
■ Padlockable in the OFF position.
■ Surface or flush mounted enclo-
sures available through 400A on
NEMA 1 enclosures.
■ Interlocked handle on NEMA 3R,
4/4X, 5 and 12 enclosures to prevent
opening when the breaker is in the
ON position.
■ Interchangeable hubs.
■ Numerous factory options.
Standards and Certifications
■ UL 489.
■ CSA 22.2.
■ NEMA 250.
