Hammond 182M240 625VA Toroidal Transformer, Single 240V Secondary

The 182M240 is a 625 VA toroidal power transformer from the 182 Series with a single 240V secondary rated at 2.6A. It is intended for chassis mounting in equipment powered from 117 VAC or 234 VAC mains at 50/60 Hz, and suits engineers and panel builders who need a 240V output from a compact, low-profile core.

The toroidal design keeps the unit low profile, lightweight and cool running thanks to its high efficiency. The dual primary is wired in parallel for 117 VAC or in series for 234 VAC, and the units are designed to have all windings engaged. Minimum 8 in long flexible leads simplify wiring, and each design is Hi-Pot tested at 4,000 V RMS between primary and secondary.

The transformer measures 6.10 in (155 mm) in outside diameter and 3.10 in (79 mm) high, and weighs 10.38 lb according to the series table (shipping weight 10.4 lbs (4.72 kg)). Mounting is by a single centre hole, and this unit has a potted centre for extra mounting strength. It is supplied with one bottom rubber insulating pad and mounting hardware, including a 3/8-16 bolt 3.50 in long.

The 182 Series is CSA certified to C22.2 #66 (file 209651), UL recognized to UL 506 (file E207860) and CE certified to IEC 950; this part is also listed as RoHS and REACH compliant. Because toroidal transformers can draw a high magnetizing inrush current for up to about half a cycle at switch-on, Hammond advises a slow-blow fuse, time-delayed circuit breaker or soft-start circuitry on the supply line.

Note: the manufacturer lists 182M240 as replaced with 1182M240, and the 182 Series is being discontinued as a stocked series in favour of the 1182 Series, available while quantities last.