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UHDM Modular Disconnect Enclosures - NEMA 12
ABB Controls, Allen Bradley, Cutler Hammer, General Electric, Siemens I-T-E Max-Flex™, Square D
<< Product Information << Disconnect Enclosures <<
 
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Application
  • Designed to bolt together in any number of units for maximum flexibility and ease of transportation. The UHDM system consists of a Master enclosure to house the flange mounted disconnect switch and interlocking Slave enclosures which may be added or removed as required. Master enclosure units will accept the following disconnect switches and circuit breakers:
    • ABB Controls flange mounted variable depth operating mechanism for disconnect switches and circuit breakers.
    • Allen Bradley 1494F flange mounted disconnect switches and 1494D flange mounted operators for circuit breakers. Allen Bradley 1494V variable depth flange operated disconnect switches and circuit breaker mechanisms.
    • C-H Westinghouse Type C361 disconnect switches and operator mechanism. Cutler Hammer Type C371 circuit breaker operating mechanisms. Flex Shaft™ handle operators for circuit breakers.
    • General Electric Type STDA flange handles and variable depth operating mechanisms for disconnect switches and circuit breakers. Also Spectra-Flex™ cable operators for circuit breakers.
    • I-T-E Max-Flex™ flange mounted variable depth operating handles for disconnect switches and circuit breakers.
    • Square D disconnect switches and circuit breakers used with Class 9422 flange mounted variable depth operating mechanisms or cable mechanisms. These enclosures will not receive Class 9422 bracket mounted disconnect devices or Class 9422TG1 or TG2 devices.
 
Standards
  • UL 508 Type 12
  • CSA Type 12
  • Complies with
    • NEMA Type 12
    • JIC EGP-1-1967 and EMP-1-1967
    • IEC 60529, IP54
  • Appropriate components are required to maintain these standards.
 
Construction
  • Formed from 10 gauge steel with smooth continuously welded seams.
  • Body stiffeners are provided in the larger enclosures for extra rigidity.
  • Heavy duty lifting eyes are anchored into reinforced top corners.
  • Removable doors are secured with heavy duty lift off hinges.
  • Flange trough collar (FTC) around door excludes liquids and contaminants.
  • Formed 10 gauge steel inner panels are provided on collar studs.
  • Panel supports are provided.
  • Center post is removable, providing easy panel installation.
  • Heavy duty three point latching door mechanism.
  • Side openings are reinforced to provide structural strength, smooth edges and preset gasket compression.
  • Oil resistant gaskets on doors and side openings are permanently secured. No gasket kit is provided.
  • Master door handle complete with screw defeater and padlock hasp.
  • Slave door handle complete with padlock hasp.
  • A mechanical interlock activated by the master door prevents the auxiliary door from being opened first.
  • The universal flange cutout provides mounting for disconnect operators by use of the appropriate operator adaptor kit.
  • A bonding stud is provided in the door and a grounding stud is provided in the enclosure for each door.
  • A literature pocket is provided.
 
Note:
  • Disconnect switches, circuit breakers and operators 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 recoatable powder coating on the outside.
  • Interior - white powder coating.
  • Inner panel is finished in white powder coating.
 
Accessories
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Master Enclosures
Overall Dimensions Ship Wt. 
lbs.
Part No. A B C D E F G H I K Description
UHDM724118MFTC 72.13 40.75 18.13 60 33.75 9.06 38.06 63.13 36.5 34.75 506
Single Door Disconnect
UHDM844118MFTC 84.13 40.75 18.13 72 33.75 9.06 44.06 75.13 36.5 34.75 573
Left side open
UHDM844124MFTC 84.13 40.75 24.13 72 33.75 12.06 44.06 75.13 36.5 34.75 658
UHDM727918MFTC 72.13 79.00 18.13 60 72.00 9.06 38.06 63.13 36.5 34.75 918
Two Door Disconnect
UHDM847918MFTC 84.13 79.00 18.13 72 72.00 9.06 44.06 75.13 36.5 34.75 1050
Left side open
UHDM847924MFTC 84.13 79.00 24.13 72 72.00 12.06 44.06 75.13 36.5 34.75 1150
 
Slave Enclosures
Overall Dimensions Ship Wt.
Part No. A B C D E F G H I K lbs. Description
UHDM724118SFTC 72.13 40.25 18.13 60 33.75 9.06 38.06 63.13 36.5 34.75 473
Single Door Slave
UHDM844118SFTC 84.13 40.25 18.13 72 33.75 9.06 44.06 75.13 36.5 34.75 550
Both sides open
UHDM844124SFTC 84.13 40.25 24.13 72 33.75 12.06 44.06 75.13 36.5 34.75 570
UHDM727818SFTC 72.13 78.50 18.13 60 72.00 9.06 38.06 63.13 36.5 34.75 888
Two Door Slave
UHDM847818SFTC 84.13 78.50 18.13 72 72.00 9.06 44.06 75.13 36.5 34.75 1010
Both sides open
UHDM847824SFTC 84.13 78.50 24.13 72 72.00 12.06 44.06 75.13 36.5 34.75 1060
 
Operator Adaptor Kits
Part No. Operator Make & Type
AKU ABB Controls operating handle
Disconnect Switch DSFHN-HS12
Circuit Breaker K7FHD-HS12
Allen Bradley 1494V variable depth operating handle
Disconnect Switch
30-200 1494V H1
400 1494V H2
Circuit breaker 1494V H11
Cutler Hammer operating handle C361H1 or H3
Disconnect Switch C371H1 or H3
Circuit Breaker C371H5 or H7
150 amps
250 to 1200 amps
Circuit Breaker C371 Flex-Shaft™ handle mechanism.
General Electric operating handle
Disconnect Switch STDA1or STDA2
Circuit Breaker STDA1or STDA2
Circuit Breaker Spectra-Flex™ cable operators
150 to 600 amps STDA1
sk1200 STDA3
Siemens I-T-E Max-Flex™  operating handle
Disconnect Switch, Variable depth FHOHS
Circuit Breaker
125 to 600 FHOH
800 to 2000 FHOHN
Square D class 9422 operating mechanism
Disconnect Switch variable depth 9422 type A1
Circuit Breaker  variable depth 9422 type A1
Disconnect Switch with cable mechanism 9422 type A1
Circuit Breaker  with cable mechanism 9422 type A1
AK1494FD Allen Bradley 1494F and D
BPAK Blank Adapter Plate
 
Space Occupied by Disconnects
Note: Disconnects will occupy space on panel shown by dimensions "K", "L", and M". Wiring space "P" is available when disconnect is installed in the enclosure.
*The disconnect information and space occupied tables based on data supplied by disconnect manufacturer’s bulletins. Hammond Manufacturing not responsible for dimensional accuracy.
  • All Universal series enclosures require one adaptor kit (ordered separately) to adapt the type of disconnect and mechanism to be used.
  • Each brand and type requires a different adaptor kit.
  • Each kit contains an adaptor plate and master door interlocking mechanism.
  • Fully detailed, illustrated instructions included.
Note: Click Here for a list of disconnect switches and circuit breakers to fit 72.12" and 84.12" enclosures.

Disconnect Ordering Information
ABB Controls
Disconnect switch:
  • Flange operated switch (fusible or non-fusible)
  • Shaft:
    • 18.13" deep enclosures use DSFHS-17
    • 24.13" deep enclosures, platform must be used with shaft (not included)
  • Handle: DSFHN-HS12
 
Circuit breaker:
  • Circuit breaker: ABB
  • Operating mechanism
  • Shaft:
    • 18.13" deep enclosures use K7FHD-S17
    • 24.13" deep enclosures, platform must be used with shaft (not included)
  • Handle mechanism: K7FHD-HS12
 
Allen Bradley
Bulletin 1494F flange mounted disconnect switch:
  • Disconnect switch
    Fuse block adaptor (if required)
  • Line and load connectors (if required)
 
1494D flange mounted circuit breaker operating mechanism:
  • Circuit breaker: C-H Westinghouse
  • Flange mounted operating mechanism
  • Slide mechanism
 
Bulletin 1494V flange mounted disconnect switch:
  • Disconnect switch
  • Operating handle
  • Connecting rod/rods (long)
  • Trailer fuse block kit (if required)
  • Fuse clip kit (if required)
  • Line and load connectors (if required)
 
Bulletin 1494V flange mounted circuit breaker operating mechanism:
  • Circuit breaker: C-H Westinghouse
  • Operating mechanism
  • Operating handle
  • Connecting rod (long)
C-H Westinghouse
Type C361 disconnect switch:
  • Disconnect switch with an operating mechanism
  • Operating handle: C361H1 or C361H3
  • In 24.13" deep enclosures, platform must be used with shaft (not included)
 
Type C371 circuit breaker operating mechanism with a C-H Westinghouse circuit breaker:
  • Circuit breaker
  • Operating mechanism
  • Long operating rod (if required)
  • Operating handle:
    • 150 amp - C371H1 or C371H3
    • 250 through 1200 amp - C371H5 or C371H7
 
Flex-Shaft™ handle mechanism:
  • Circuit breaker
  • Complete Flex-Shaft™ handle mechanism
 
General Electric
Disconnect switch:
  • Disconnect switch: Type QMR or QMW
  • Fuse clip kit or no-fuse kit
  • Flange handle: STDA1 or STDA2
  • Variable depth operating mechanism
  • Extended length drive rod (if required)
 
Circuit breaker:
  • Circuit breaker
  • Flange handle: STDA1 or STDA2
  • Variable depth operating mechanism
  • Extended length drive rod (if required)
 
Circuit breaker with a Spectra-Flex™ cable operator:
  • Circuit breaker
  • Flange mounted handle mechanism:
    • 150 to 600 amps - STDA1
    • SK1200 - STDA3
  • Breaker mounted mechanism
  • Operating cable
I-T-E Siemens
Disconnect switch:
  • Basic switch (right-hand)
  • Fuse or no-fuse kit
  • Flange mounted handle: FHOHS
  • Switch operator
  • Operating cable: FHOEC048
 
Circuit breaker:
  • Circuit breaker
  • Pressure wire connectors
  • Flange mounted handle:
    • 100 to 600 - FHOH
    • 800 to 2000 - FHOHN
  • Circuit breaker operator mechanism
  • Operating cable:
    • 18.13" deep enclosures accept 36" or 48" cables;
    • 24.13" deep enclosures require a 48" cable
  • These items are available from Siemens I-T-E as a complete mechanism with a 36" operating cable only Order items separately when using a 48" cable
 
Square D
Disconnect switch:
  • Disconnect switch with operating mechanism
  • Universal handle mechanism: Type A-1
  • Long operating rod (if required)
 
Circuit breaker:
  • Circuit breaker
  • Operating mechanism
  • Universal handle mechanism: Type A-1
  • Long operating rod (if required)
 
Class 9422 Type T disconnect switch with a cable mechanism:
  • Disconnect switch with operating mechanism: Class 9422, Type T
  • Handle mechanism: Class 9422, Type A-1
  • Cable mechanism: Class 9422 CFT_O, 3, 5, or 10 foot
 
Circuit breaker with a cable mechanism:
  • Circuit breaker: Square D
  • Handle mechanism: Class 9422, type A-1
  • Cable mechanism: Class 9422 CFT_O, 3, 5, or 10 foot
Formed End Plates and Flat End Plates
  • Formed from 12 gauge steel.
  • Used to enclose the open end(s) of one or more modular enclosures.
  • Two types are available. No separate gasket kit is required.
Formed End Plate
Flat End Plate
   
Flat Barrier Plate
  • Formed from 14 gauge steel.
  • May be used to provide a barrier between modular enclosures. They are supplied complete with gasket.
Part No. A B
UHDM7218BPA 71.86 17.87
UHDM8418BPA 83.87 17.87
UHDM8424BPA 83.87 23.87
*Mounting Hardware Included
   
Panel Bridge Kit
  • Formed from 10 gauge steel.
  • May be used to join back panels together between modular enclosures to provide a continuous panel surface.
Part No. L
UHDMFTC72BK 60
UHDMFTC84BK 72
 
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