Hammond 266M2 7.5VA Low Voltage Transformer, 2.5V C.T. at 3A

The 266M2 is a 7.5 VA low-voltage transformer rated 2.5 V center tapped at 3 A, or 1.25 V at 6 A with the secondaries in parallel, the lowest-voltage model in the 266 Series for very low voltage filament and supply duty. 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 (2.5V @ 3A), connected in parallel (1.25V @ 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 266M2 uses mounting style A with 0.19 in (5 mm) mounting holes. Its listed dimensions are A 2.82 in (72 mm), B 1.69 in (43 mm), C 1.69 in (43 mm) and D 2.38 in (60 mm). It weighs 0.76 lbs (0.34 kg) and ships at 0.6 lbs (0.27 kg).