Hammond 266LH25 70.56VA Transformer, 25.2V C.T. or 12.6V at 5.6A

The 266LH25 is a 70.56 VA open-style power transformer rated 25.2 V center tapped at 2.8 A, or 12.6 V at 5.6 A with its secondaries in parallel, giving more current than the 50.4 VA 25.2 V models in the series. It belongs to the Hammond 266 Series of low voltage/filament transformers and is aimed at OEM engineers, repair technicians and panel builders who mount the transformer directly to a chassis.

The primary is a dual 117/234 VAC, 50/60 Hz winding: connect the two primary halves in parallel for 117 V or in series for 234 V. The dual secondaries can be used as a center-tapped secondary (25.2V @ 2.8A), connected in parallel (12.6V @ 5.6A) or used individually, and the unit is designed for use with all windings engaged.

Construction is open style with a dual bobbin design, so no electrostatic shield is required. Hammond uses Class B (130 °C) insulation for extra protection, while the design is UL listed as Class A (105 °C). Every unit is hi-pot tested at 2,000V RMS, and all leads are a minimum of 6 in long. The transformer is UL listed (# E207860) Type 3AH, CSA certified (209651), and RoHS and REACH compliant.

The 266LH25 uses mounting style A with 0.19 in (5 mm) mounting holes. Its listed dimensions are A 4.00 in (102 mm), B 2.25 in (57 mm), C 2.62 in (67 mm) and D 3.56 in (90 mm). It weighs 2.63 lbs (1.19 kg) and ships at 2.5 lbs (1.13 kg).