Hammond 266LA25 50.4VA Center-Tapped Transformer, 25.2V C.T. at 2A

The 266LA25 is a 50.4 VA power transformer with a single 25.2 V center-tapped secondary rated 2 A. It is the one model in the 266 Series without dual secondaries, so it has no parallel rating. 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 secondary of the 266LA25 is a single center-tapped winding rated 25.2V C.T. @ 2A, so unlike the rest of the series it is not intended for parallel connection or individual use. 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 266LA25 uses mounting style A with 0.19 in (5 mm) mounting holes. Its listed dimensions are A 3.69 in (94 mm), B 2.13 in (54 mm), C 2.31 in (59 mm) and D 3.13 in (80 mm). It weighs 2.69 lbs (1.22 kg) and ships at 2.2 lbs (1.00 kg).