Transformer - Hammond, Toroidal Power, 9V / 18V secondary

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Transformer - Hammond, Toroidal Power, 9V / 18V secondary

Starting at: $54.94
In Stock

Dual 117/234 VAC primary, ~\frac{50}{60}~ Hz. operation. 18 V series, 9 V parallel secondary.

Toroidal transformers are

  • low profile
  • lightweight
  • cool running / high efficiency
  • have low stray magnetic flux leakage (low EMI) due to core shape


  • Supplied with two neoprene rubber insulating pads, one metal centering washer and all mounting hardware
  • Minimum 8" long flexible leads
  • Manufactured using Class B (130 degree C) materials.
  • Hi-Pot test of 4,000VAC RMS between primary & secondary
  • UL recognized to UL506 (XPTQ2.Guide) UL file #E207860
  • CSA certified to C22.2 #66 - CSA file #209651
  • CE compliant to IEC 61558-2-4

Note: Units are designed to have all windings engaged (either series or parallel connected) or connected as an autotransformer.

Note about Inrush Current: Due to the superior magnetic properties of Toroidal transformers they will be susceptible to high magnetizing current when initially energized, only limited by the low DC resistance of the primary winding. Depending on where you are in the AC cycle when the transformer is energized dictates the chances of overloading the supply circuit. This is why the transformer may sometimes energize without a problem and other times it will blow the fuse or trip the circuit breaker. The duration of this overload is rarely longer than a half of a cycle. Therefore, you should consider using a slow-blow fuse, time delayed circuit breaker or other form of soft start circuitry for the supply line when using these high efficient Toroidal transformers.

Part No. VA VAC Secondary (RMS) Dual or Single Secondary % Voltage Regulation Toroid Center
Series Parallel
P-T1182H9 15 18V C.T. @ 0.830A 9V @ 1.66A Dual 11.42% Open
P-T1182K9 30 18V C.T. @ 1.67A 9V @ 3.34A Dual 12.80% Open
P-T1182M9 50 18V C.T. @ 2.78A 9V @ 5.56A Dual 13.20% Open
P-T1182N9 80 18V C.T. @ 4.44A 9V @ 8.88A Dual 10.50% Open
P-T1182Q9 120 18V C.T. @ 6.67A 9V @ 13.34A Dual 9.00% Open

For other toroidal secondary voltages, see our other listings:

Voltage Product
6V parallel / 12V series secondary P-T1182-6
9V parallel / 18V series secondary P-T1182-9
12V parallel / 24V series secondary P-T1182-12
15V parallel / 30V series secondary P-T1182-15
18V parallel / 36V series secondary P-T1182-18
22V parallel / 44V series secondary P-T1182-22
24V parallel / 48V series secondary P-T1182-24
30V parallel / 60V series secondary P-T1182-30
40V parallel / 80V series secondary P-T1182-40
60V parallel / 120V series secondary P-T1182-60
90V parallel / 180V series secondary P-T1182-90
110V parallel / 220V series secondary P-T1182-110
117V parallel / 234V series secondary P-T1182-117
240V secondary P-T1182-240
Item ID:
RoHS Compliant
Part Numbers
VA RatingOur Part NumberUPC/EANHammond Part Number
15P-T1182H9623980531120 1182H9
30P-T1182K9623980531212 1182K9
50P-T1182M9623980531304 1182M9
80P-T1182N9623980531397 1182N9
120P-T1182Q9623980531489 1182Q9
Product Measurements by Type
% Voltage Regulation15 versionP-T1182H911.42%
30 versionP-T1182K912.80%
50 versionP-T1182M913.20%
80 versionP-T1182N910.50%
120 versionP-T1182Q99.00%
Height15 versionP-T1182H91.2 in.
30 versionP-T1182K91.25 in.
50 versionP-T1182M91.5 in.
80 versionP-T1182N91.5 in.
120 versionP-T1182Q91.63 in.
Inside Diameter15 versionP-T1182H91.25 in.
30 versionP-T1182K91.50 in.
50 versionP-T1182M91.25 in.
80 versionP-T1182N91.6 in.
120 versionP-T1182Q91.45 in.
Lead Length8 in.
Outside Diameter15 versionP-T1182H92.65 in.
30 versionP-T1182K93.00 in.
50 versionP-T1182M93.25 in.
80 versionP-T1182N93.5 in.
120 versionP-T1182Q94.25 in.
Parallel Secondary15 versionP-T1182H99V @ 1.66A
30 versionP-T1182K99V @ 3.34A
50 versionP-T1182M99V @ 5.56A
80 versionP-T1182N99V @ 8.88A
120 versionP-T1182Q99V @ 13.34A
Series Secondary15 versionP-T1182H918V C.T. @ 0.830A
30 versionP-T1182K918V C.T. @ 1.67A
50 versionP-T1182M918V C.T. @ 2.78A
80 versionP-T1182N918V C.T. @ 4.44A
120 versionP-T1182Q918V C.T. @ 6.67A
Toroid CenterOpen
Packaging Information
Packaging Dimensions15 versionP-T1182H93 in. × 3 in. × 1.4 in.
30 versionP-T1182K93 in. × 3 in. × 1.4 in.
50 versionP-T1182M93.25 in. × 3.25 in. × 1.5 in.
80 versionP-T1182N93.5 in. × 3.5 in. × 1.5 in.
120 versionP-T1182Q93.5 in. × 3.5 in. × 1.5 in.
Weight (Packaging)15 versionP-T1182H90.5 lbs.
30 versionP-T1182K91 lbs.
50 versionP-T1182M91.75 lbs.
80 versionP-T1182N92.25 lbs.
120 versionP-T1182Q93 lbs.
Product Measurements by Item
P-T1182H9 - 15 version% Voltage Regulation11.42%
Height1.2 in.
Inside Diameter1.25 in.
Lead Length8 in.
Outside Diameter2.65 in.
Parallel Secondary9V @ 1.66A
Series Secondary18V C.T. @ 0.830A
Toroid CenterOpen
P-T1182K9 - 30 version% Voltage Regulation12.80%
Height1.25 in.
Inside Diameter1.50 in.
Lead Length8 in.
Outside Diameter3.00 in.
Parallel Secondary9V @ 3.34A
Series Secondary18V C.T. @ 1.67A
Toroid CenterOpen
P-T1182M9 - 50 version% Voltage Regulation13.20%
Height1.5 in.
Inside Diameter1.25 in.
Lead Length8 in.
Outside Diameter3.25 in.
Parallel Secondary9V @ 5.56A
Series Secondary18V C.T. @ 2.78A
Toroid CenterOpen
P-T1182N9 - 80 version% Voltage Regulation10.50%
Height1.5 in.
Inside Diameter1.6 in.
Lead Length8 in.
Outside Diameter3.5 in.
Parallel Secondary9V @ 8.88A
Series Secondary18V C.T. @ 4.44A
Toroid CenterOpen
P-T1182Q9 - 120 version% Voltage Regulation9.00%
Height1.63 in.
Inside Diameter1.45 in.
Lead Length8 in.
Outside Diameter4.25 in.
Parallel Secondary9V @ 13.34A
Series Secondary18V C.T. @ 6.67A
Toroid CenterOpen

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