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Isolation - Chassis Mount: 15VA to 1000VA

Triad isolation transformers from Triad Magnetics are power transformers for isolating equipment from direct connection to the power line. They are offered in a variety of voltages and case types. TRIAD isolation transformers are also offered in a hospital type (designated with an MD suffix) which are designed and constructed to meet the low leakage current requirements for todays medical equipment. The transformers are constructed with non-concentrically wound coils. The primary and secondary are wound on separate arbors, then assembled on a laminate core side-by-side separated by insulation. This prevents electrical connection, under normal or overload conditions, between the primary and secondary windings. These hospital type units are offered with a resettable circuit breaker, providing protection from overload and short circuit conditions.


Please note: highlighted part numbers are hyperlinked, you can click part number for datasheet.

Specifications:

Primary: 115/230 VAC, 50/60 Hz
Secondary: 115/230VAC
Output Watts: 15 to 1,000 VA


Case Type X


Case Type A


Case Type M


Case Type U

STANDARD APPLICATIONS

Type
No.
VA Primary
Voltage
Secondary AC Case
Type
Connections Lead
Holes
Used
Dimensions Mounting
Dimensions
Wt.
Lbs.
Volts
5%
Amps H W D MW MD
N-48X

15

115

115.0

0.13

X (1)

Leads

-

1 15/16

3 5/16

2

2 13/16

-

1.35

N-51X

35

115

115.0

0.3

X (1)

Leads

-

2 9/32

3 11/16

2 1/8

3 1/8

-

1.7

N-68X

50

115-230**

115.0

0.435

X (1)

Leads

-

2 9/32

3 11/16

2 1/8

3 1/8

-

1.7

N-53M

85

115

115.0

0.74

M (3)

6' Cord, Plug & Socket

-

3 19/32

2 31/32

3 3/4

2 1/4

2 3/8

4.7

N-53MG*

85

115

115.0

0.74

M (3)

6' Cord, Plug & Socket

-

3 19/32

2 31/32

4 1/8

2 1/4

2 7/8

4.7

N-76U***

100

115

115.0

0.86

U (2)

Leads

-

3 7/16

2 13/16

3

2 1/4

2 1/2

4.0

N-77U***

100

115/230

115.0

0.86

U (2)

Leads

-

3 7/16

2 13/16

3

2 1/4

2 1/2

4.0

N-54M

150

115

115.0

1.3

M (3)

6' Cord, Plug & Socket

-

3 7/8

3 9/32

4 1/4

2 1/2

3

7.0

N-54MG*

150

115

115.0

1.3

M (3)

6' Cord, Plug & Socket

-

3 7/8

3 9/32

5 13/16

2 1/2

3 1/2

7.0

N-67A

150

115-230**

115.0

1.3

A (3)

Leads

2

3 7/8

3 9/32

3 7/8

2 1/2

3

7.0

N-73A

150

115

115-230.0**

0.65

A (3)

Leads

1

3 7/8

3 9/32

3 5/8

2 1/2

2 3/4

7.0

N-255MG*

250

230

115.0

2.17

M (3)

6' Cord, Plug & Socket

-

4 5/8

3 15/16

5

3

3 13/16

11.0

N-55M

250

115

115.0

2.17

M (3)

6' Cord, Plug & Socket

-

4 5/8

3 15/16

5

3

3 13/16

11.0

N-55MG*

250

115

115.0

2.17

M (3)

6' Cord, Plug & Socket

-

4 5/8

3 15/16

5

3

3 13/16

11.0

N-66A

250

115-230**

115.0

2.17

A (3)

Leads

2

4 5/8

3 15/16

4 5/8

3

3 5/8

11.0

N-257MG*

500

230

115.0

4.35

M (5)

6' Cord, Plug & Socket

-

5 5/16

4 1/2

6 1/4

3 1/2

5 1/8

23.75

N-57M

500

115

115.0

4.35

M (5)

6' Cord, Plug & Socket

-

5 5/16

4 1/2

6 1/4

3 1/2

5 1/8

23.75

N-57MG*

500

115

115.0

4.35

M (5)

6' Cord, Plug & Socket

-

5 5/16

4 1/2

6 1/4

3 1/2

5 1/8

23.75

N-259MG*

1000

230

115.0

8.7

M (5)

6' Cord, Plug & Socket

-

5 5/16

4 1/2

7 1/8

3 1/2

6

31.0

N-59M

1000

115

115.0

8.7

M (5)

6' Cord, Plug & Socket

-

5 5/16

4 1/2

7 1/8

3 1/2

6

31.0

N-59MG*

1000

115

115.0

8.7

M (5)

6' Cord, Plug & Socket

-

5 5/16

4 1/2

7 1/8

3 1/2

6

31.0

 

* With Ground Wire
**Split winding
***Unit does not include static shield
Mounting hole sizes: (1)=3/16"     (2)=13/64x3/8"     (3)=3/8x3/16"     (5)=
1/2x1/4"

Technical Notes:
  1. Line cord, plug and receptacles are U.L. listed and verified to meet federal specifications.
  2. Connections are by leads, plugs and sockets.
  3. Hi-pot tested at 1,500 VRMS.
  4. All units have static shields, except those marked with an asterisk.

MEDICAL/DENTAL APPLICATIONS UL 544 File E1029101

Type
No.
VA Primary
Voltage
Secondary AC Case
Type
Connections Lead
Holes
Used
Dimensions Mounting
Dimensions
Wt.
Lbs.
Volts
5%
Amps H W D MW MD
N-90MD 250 115 115.0 2.17 M (3) 6' Cord, Plug & Socket Circuit Breaker - 4 5/8 3 7/8 6 1/8 3 4 15/16 11.9
N-92MD 500 115 115.0 4.35 M (4) 6' Cord, Plug & Socket Circuit Breaker - 5 11/32 4 1/2 7 3 1/2 5 3/8 17.6

Mounting hole sizes: (3)=3/8x3/16"     (4)=21/32x9/32"
Leakage current from primary to secondary is rated at less than 50 micro-amps and is typically measured at less than 10 micro-amps.

1. UL listing is only valid on parts produced on or before December 31, 2009. Parts will carry a date code of "0952" or earlier.

  Triad Magnetics | 460 Harley Knox Blvd. | Perris, CA 92571 | T 951.277.0757 | F 951.277.2757