You are here

Transformer - Hammond, Power, 250-0-250 V, 81 mA
Product Data:
Item ID: 003518
In stock
Brand → Hammond
Type → Power
Transformer - Hammond, Power, 250-0-250 V, 81 mA image 1


Size: 65 VA
Dual Primary: 117 VAC, 50/60 Hz.
A.C. High Voltage Secondary RMS: 500V.C.T. @ 81mA
Filament Winding #1 5 V @ 2 A
Filament Winding #2 6.3 V @ 2.5 A


  • Enclosed, 4 hole, chassis mount.
  • Minimum 6" long leads.
  • Units can be run full wave bridge or full wave C.T.
  • Class A insulation (105 degrees C).
  • Hi-Pot test of 2,000V RMS.
  • Conservative designs - CSA certified (209651).
  • NOTE: A production "running change" has been made to the primary winding - effective with August 2009 production.

Choice #1 (115 VAC Input): For those customers who need the 115V input - nothing has changed - simply use the White & Gray wires and tape the Black wire (see above schematic). Choice #2 (125 VAC Input): For those customers who are seeing too high a secondary voltage due to higher primary line voltages (roughly 125V input) - use the White & Black wire and tape the gray wire Caution: NEVER connect power to BOTH the GRAY & BLACK wire - instantaneous destruction of the transformer will result!

Item Length2.5 in.
Item Width3.06 in.
Item Height3.06 in.
Mounting Center Distance A2 in.
Mounting Center Distance B2.063 in.
Fastener Hole Diameter0.203 in.
Weight3.55 lbs.
Packaging Dimensions5.625 in. x 5.25 in. x 5.375 in.

Specifications, Files, and Documents: