Download Pre-Wired Auto Transformers Sell Sheet

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Pre-Wired Auto-Transformers
The Transformer Authority
Jefferson Electric Offers Pre-Wired
In addition to Jefferson Electric’s full line of
Buck-Boost transformers we offer a line of
pre-wired auto-transformers designed for faster
and easier installation. Single-phase and
three-phase units are available with cables and
plugs pre-wired to specific voltage combinations.
Simplifying the installation
Standard Buck-Boost transformers can be
configured to reduce (buck) or increase (boost) the
input voltage to a variety of output voltages. The
Buck-Boost installer must connect multiple input
and output wires following a specific wiring
diagram for the voltages required.
Our series of pre-wired auto-transformers
simplifies the process. The user can order a
transformer for the specific input and output voltages needed and the installation is much
easier, faster and less expensive.
Single-Phase Pre-Wired Auto-Transformers
Single-phase Buck-Boost units pre-wired with plugs or cords to reduce on-site installation
15 to 400 amps
1-phase, 60Hz
+/- 12, +/-16, +/-24 or +/-32 volts
30 Amp “Twist-Lock” plugs and receptacles
NEMA 1 or NEMA 3R enclosure
208V or 240V Primary
225V, 230V, 235V, 240V Secondary
UL and cUL Listed
Three-Phase Pre-Wired Auto-Transformers
Three-phase auto-transformers pre-wired to any of four voltage combinations and available
in sizes large enough to power an electrical panel.
30 to 800 Amps
3-phase, 60Hz
208V or 240V Primary
225V, 230V, 235V, 240V Secondary
NEMA 1 or 3R enclosure
Primary Taps +5% and –5% (on 200A+ units)
UL and cUL Listed
Other Auto-Transformer Documents
Pre-wired auto-transformer white paper explains the product options.
Tanning bed transformer catalog lists the specific products by catalog #.
(800) 892-3755