Application

• Designed to house the following safety disconnect equipment:
  • ABB Controls flange-mounted variable depth operating mechanism for disconnect switches and circuit breakers. Cable version for circuit breakers also available.
  • Allen Bradley 1494V variable depth flange mounted disconnect switches and circuit breaker operators NEMA 4 rated. Will not accept Allen Bradley 1494F disconnect switches, 1494D circuit breaker operators or 1494V-R1, -R2, or -W2 operating handles.
  • C-H Westinghouse C361 variable depth flange mounted disconnect switches and C371 circuit breaker operators, and also Flex-Shaft™ handle mechanism for circuit breakers. Use Cutler Hammer NEMA 4 rated operating handles to maintain NEMA 4 integrity.
  • General Electric Type STDA flange handles and variable depth operating mechanism for disconnect switches and circuit breakers. Also Spectra-Flex™ cable operators for circuit breakers.
  • Siemens I-T-E Max-Flex™ flange mounted variable depth handles for disconnect switches and circuit breakers. Use handle for NEMA 4.
  • Square D class 9422 disconnect switches with flange-mounted variable depth operating mechanisms or cable mechanisms and Class 9422 flange-mounted variable depth operating mechanisms or cable mechanisms for circuit breakers. SN4 enclosures will not accept Square D Class 9422 bracket-mounted disconnect devices, 9422TG1 or TG2 devices.
    

Standards

• UL 508 Type 3R, 4
• CSA Type 3R, 4
• Complies with
  • NEMA Type 3R, 4, 12
  • JIC EGP-1-1967
  • IEC 60529, IP66
• Appropriate components are required to maintain these standards.

Construction

• Formed 14-gauge steel.
• Continuously welded seams.
• Larger sizes include door and body stiffeners.
• Welded brackets provide for enclosure mounting.
• Formed lip on door and enclosure exclude flowing liquids and contaminants.
• Cutouts and holes are provided to suit the flange handle operating mechanism.
• Continuously hinged doors may be removed by pulling the stainless steel hinge pin.
• Door is secured with easily operated stainless steel clamps.
• Cover interlock bracket is welded to the door.
• Collar studs are provided for mounting inner panels.
• A removable 12 gauge inner panel is included.
• Oil resistant gaskets are permanently secured and mechanically retained.
• A bonding stud is provided on the door and a grounding stud is provided in the enclosure.
• A literature pocket is provided for the inside of the door.

Note

• Disconnects and operating mechanisms are not provided with the enclosure, and must be ordered separately from the manufacturer.
  

Finish

• Door and enclosure are phosphatized and finished in ANSI 61 gray powder coating.
• Inner panel is finished in white powder coating.

Accessories

• Additional inner panels
• Air conditioners
• Blowers
• Breather kits
• Door stop kit
• Floor stand kits
• Heaters
• Thermostats
• Window kits