Three-Phase Pad-Mounted Space-Saver 3™

Space-Saver 3™ is a three-phase pad-mounted transformer housed in a minimum profile enclosure. It is designed for applications requiring three-phase service in a small, unobtrusive package and is the ideal choice for small commercial loads. The design is easier to handle, install and maintain. Its removable flip-up hood allows easy access to the terminal compartment.

Howard Industries manufactures a complete line of transformers, all designed with increased margins of safety and reliability. Contact your distributor or factory representative for availability of other kVA sizes, voltage ratings, features, accessories and design standards not listed.

Talk to us about filling a custom order that best fits your needs.


KVA Ratings (65° Rise, ONAN) 30, 45, 75, 112.5, 150
High-Voltage Ratings (Delta or Wye) 2400 through 34500 (through 150 kV BIL)
Low-Voltage Ratings (Delta or Wye) 120 through 480 (through 30 kV BIL)
Meets or exceeds applicable IEEE, NEMA, and DOE standards (except for certain dimensional characteristics)
Full compliance with ANSI C57.12.28 enclosure integrity standards
Externally clamped universal high-voltage bushing wells for dead front applications (three for radial feed operation or six for loop feed operation)
Externally clamped low-voltage bushings with threaded stud for full-load current through 1400 Amps, or externally clamped one-piece NEMA spade bushings for full-load current above 1400 Amps
Front panel accessory mounting brackets
Removable neutral ground strap in low-voltage compartment (for wye connected low-voltage ratings only)
Lifting provisions
Removable hood with stainless steel hinge pins and barrels
Removable sill with stainless steel fasteners
Recessed hood latching system with captive pentahead security bolt, floating nut and interlocking padlock provision
Tank ground provisions
Mild steel tank and terminal compartment
Insulated high-voltage/low-voltage compartment barrier
Domed top surfaces on tank and terminal compartment to prevent water retention
Recessed tank compartment bottom
Electrostatically applied powder paint finish with olive-green polyurethane top coat (Munsell 7GY 3.29/1.5) provides excellent resistance to chipping, fading, abrasion, and corrosion
Oil fill/oil level plug
Automatic pressure relief device mounted in terminal compartment
Electrical grade mineral oil insulation fluid with oxidation inhibitor
Laser engraved anodized aluminum nameplate
Decal bushing designations
Loadbreak high-voltage bushing inserts or externally clamped integral (one piece) high-voltage bushings
Low-voltage connectors, including various screw-on or slip-on types
Externally operable non-loadbreak high-voltage tap switch with one of the following tap ranges:
• Four 2.5% taps above normal
• Four 2.5% taps below normal
• Two 2.5% taps above and two 2.5% taps below normal
• Taps at 13800/13200/12870/ 12540 for transformers with a nominal high-voltage rating of 14400 (not available in combination with dual high-voltage switch)
Externally operable dual high-voltage switch (not available in combination with high-voltage tap switch)
Fault indicators or fault indicator mounting provisions only
Internal expulsion fuses, alone or in combination with internal backup current limiting fuses
Draw-out expulsion fuses with isolation links, alone or in combination with internal backup current limiting fuses
MOV surge arresters, including under-oil or elbow types
Drip shields for use with draw-out expulsion fuses
Externally operable two-position or four-position high-voltage loadbreak switch
Drain valve with sampling device
Total stainless steel or hybrid (mild steel/ stainless steel) construction
Temporary access service provision (conduit hole)
Hexhead security bolt (pentahead standard)
Amorphous Motor Core
Silicone or Ester-based insulation fluid
Tank ground connectors
Laser engraved stainless steel nameplate (aluminum standard)
Custom stenciling or labeling
NEMA safety labels