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BUCK BOOST TRANSFORMERS

MGM provides buck-boost transformers as a simple and economical way to correct off-standard voltages from 95 to 500 volts, single and three-phase, in sizes up to 25 kVA. When the supply voltage is constantly too high or too low, (usually more than 55%), the equipment fails to operate at maximum efficiency. Buck Boosts are most commonly used for 240V equipment in a facility with 208V service or vice versa. Buck Boost transformers are used in a number of different applications including lighting, motors, pumps, HVAC and circuit control.
Standard features for Buck Boost transformers include:
  • Ratings from 50VA to 10,000VA
  • 50/60 Hz frequency
  • Encapsulated core & coils in a combination silica sand and resin compound
  • Insulation system: 115°C rise
  • UL listed & CSA certified
  • Three standard voltage groups:
  • 120/240-12/24
  • 120/240-16/32
  • 240/480-24/48
  • Single & three phase configurations available
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Buck Boost Selector

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With our two state of the art manufacturing facilities we can offer quick turnaround time with free shipping through out the continental United States. Ask about our Bull Rush program for expediting your order.

120 x 240 PRIMARY VOLTS – 12/24 SECONDARY VOLTS – 60 HZ

CAT #
RATING
MAX CURRENT OUTPUT (12V)
MAX CURRENT OUTPUT (24V)
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
M181047
0.05 KVA
4.16
2.08
6.41
3.14
3.05
4
A
M181048
0.1 KVA
8.32
4.16
7.16
3.89
3.67
5
A
M181049
0.15 KVA
15.52
6.25
7.16
3.89
3.67
7
A
M181050
0.25 KVA
20.8
10.4
8.68
4.08
3.88
10
B
M181051
0.5 KVA
41.6
20.8
9.06
4.37
4.20
15
B
M181052
0.75 KVA
62.5
31.25
9.68
4.75
4.51
19
B
M111683
1 KVA
83.2
41.6
10.50
5.50
5.13
24
B
M111684
1.5 KVA
125
62.5
11.62
5.50
5.13
30
B
M111685
2 KVA
166
83.2
13.00
5.50
5.13
38
B
M111686
3 KVA
250
125
11.50
10.31
7.13
55
C
M111687
5 KVA
416.6
208
14.38
10.31
7.13
75
C
M111688
7.5 KVA
625
312.5
20.81
11.12
10.84
125
D
M111689
10 KVA
833
416.6
20.81
11.75
11.59
160
D

120 x 240 PRIMARY VOLTS – 16/32 SECONDARY VOLTS – 60 HZ

CAT #
RATING
MAX CURRENT OUTPUT (16V)
MAX CURRENT OUTPUT (32V)
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
M181054
0.05 KVA
3.12
1.56
6.41
3.14
3.05
4
A
M181055
0.1 KVA
6.25
3.12
7.16
3.89
3.67
5
A
M181056
0.15 KVA
9.38
4.69
7.16
3.89
3.67
7
A
M181057
0.25 KVA
15.6
7.8
8.68
4.08
3.88
10
B
M181058
0.5 KVA
31.2
15.6
9.06
4.37
4.20
15
B
M181059
0.75 KVA
46.9
23.4
9.68
4.75
4.51
19
B
M113073
1 KVA
62.5
31.2
10.50
5.50
5.13
24
B
M113074
1.5 KVA
93.7
46.9
11.62
5.50
5.13
30
B
M113075
2 KVA
125
62.5
13.00
5.50
5.13
38
B
M113076
3 KVA
187.5
93.8
11.50
10.31
7.13
55
C
M113077
5 KVA
312
156
14.38
10.31
7.13
75
C
M113078
7.5 KVA
468
234
20.81
11.12
10.84
125
D
M113079
10 KVA
625
312
20.81
11.75
11.59
160
D

240 x 480 PRIMARY VOLTS – 24/48 SECONDARY VOLTS – 60 HZ

CAT #
RATING
MAX CURRENT OUTPUT (16V)
MAX CURRENT OUTPUT (32V)
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
M181061
0.05 KVA
2.08
1.04
6.41
3.14
3.05
4
A
M181062
0.1 KVA
4.16
2.08
7.16
3.89
3.67
5
A
M181063
0.15 KVA
6.24
3.12
7.16
3.89
3.67
7
A
M181064
0.25 KVA
10.4
5.2
5.20
4.08
3.88
10
B
M181065
0.5 KVA
20.8
10.4
9.06
4.37
4.20
15
B
M181066
0.75 KVA
31.2
16.1
9.68
4.75
4.51
19
B
M137920
1 KVA
41.6
20.8
10.50
5.50
5.13
24
B
M137921
1.5 KVA
62.4
31.2
11.62
5.50
5.13
30
B
M137922
2 KVA
83.2
41.6
13.00
5.50
5.13
38
B
M137923
3 KVA
125
62.5
11.50
10.31
7.13
55
C
M137924
5 KVA
208
104
14.38
10.31
7.13
75
C
M243570
7.5 KVA
312
156
20.81
11.12
10.84
125
D
M243571
10 KVA
416
208
20.81
11.75
11.59
160
D

FEATURES

STANDARD FEATURES
  • Ratings from 50VA to 10,000VA
  • Three standard voltage groups:
  • 120/240-12/24
  • 120/240-16/32
  • 240/480-24/48
  • 50/60 Hz frequency
  • Encapsulated core & coils in a combination silica sand and resin compound
  • Designed with a heavy duty NEMA Type 3R enclosure
  • Insulation system: 115°C rise
  • ANSI C57.12.01
  • Single & three phase configurations available
  • UL listed & CSA certified
3 PHASE SYSTEMS

A single unit is used to buck or boost single phase voltage — however two or three units can be used to buck or boost three phase voltage. 

The number of units to be used in a three-phase installation depends on the number of wires in the supply line. If the three-phase supply is 4 wire Y, use three buck-boost transformers. If the 3-phase supply is 3 wire Y (neutral not available), use two buck-boost transformers.

Please reach out to an MGM representative to understand how to use our Single Phase units in a Three Phase application.

TESTING AND QUALITY

UL Listed, CSA Certified, with a UL 3R Enclsoure. Meets or exceeds all listing criteria including NEMA, ANSI and OSHA standards

Benefits

CORRECTS CRITICAL VOLTAGE MISMATCHES

With nearly two-thirds of all electrical loads being A.C. motor loads, maintaining the proper voltage is very important. If the supply line voltage is not maintained, motor winding current is increased causing reduced motor torque and escalating motor temperature, all of which results in the rapid loss of insulation life expectancy. Anytime you have a lower than standard voltage, equipment damage and failure can result.
Buck-boost transformers are an economical way to correct this potentially very serious problem. Anytime a line voltage change in the 5-20% range is required, a buck-boost transformer should be considered as your first line of defense.

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