Factory-sealed Cl. I, Div. 1 & 2, Groups C, D Cl. II, Div. 1, Groups E, F, G Cl. II, Div. 2, Groups F, G Cl. III Explosionproof Dust-Ignitionproof 3A Applications: Type TCH electric clocks are used: • In oil refinery control rooms, hospital operating rooms, chemical plants, grain handling and processing plants and other similar locations where specific hazardous atmospheres may exist Features: • Sheet steel case may be used where environmental conditions are not severe; electric motor and connections are contained in corrosion-resistant enclosure; dials are 13" in diameter; reset knob protrudes from bottom of case • Disassembly for installation and maintenance is easily performed; the motor housing is factory-sealed, with no external seals required Certifications and Compliances: • NEC: Class I, Division 1 & 2, Groups C, D Class II, Division 1, Groups E, F, G Class II, Division 2, Groups F, G Class III • UL Standard: 1203 Standard Materials: • Clock body and cover - sheet steel • Motor housing - copper-free aluminum Standard Finishes: • Aluminum - aluminum acrylic paint • Sheet steel - baked aluminum enamel Size Ranges: • Hubs - 1" through-feed Electrical Rating Ranges: • 110VAC, 60 hertz • Self-starting synchronous motor - 3 watts Options: The following special options are available: Description Suffix Sheet metal band notched for conduit, can be supplied for enclosing gap between wall surface See and back of case listings Ordering Information: Enclosing Sheet Enclosure with Clock Metal Band Motor Hub Size Style Cat. # Cat. # With Sheet Steel Case TCH2220 TCH202 Surface Mount Back View *Dimensions are approximate, not for construction purposes. US: 1-866-764-5454 CAN: 1-800-265-0502 Copyright© 2013 Eaton’s Crouse-Hinds Business