Hammond 1182H9 15VA Toroid Power Transformer, Dual 9V Secondary

The 1182H9 is a 15VA toroid power transformer from the 1182 Series, built for OEM engineers, panel builders and electronics designers who need a compact, low-profile chassis transformer. It is the low-voltage 15VA option, with 9V in parallel or 18V C.T. in series.

The primary is dual 117/234 VAC for 50/60 Hz operation: the two 117V primary windings are connected in parallel for a 117V supply or in series for 234V. The dual secondary can be wired in parallel for 9V @ 1.66A or in series for 18V C.T. @ 0.830A, and the ordering table lists voltage regulation of 11.42%. All windings are meant to be engaged (series or parallel) or connected as an autotransformer, and a connection sheet is included.

The toroidal core brings a low profile, light weight, cool running and high efficiency, and its shape keeps stray magnetic flux leakage (EMI) low. It has an open center, mechanical dimension reference A, and is manufactured using Class B (130 degree C) materials with a 4,000VAC RMS Hi-Pot test between primary and secondary. It has minimum 8" long flexible leads and is supplied with two neoprene rubber insulating pads, one metal centering washer and all mounting hardware. Shipping weight is 0.5 lbs (0.23 kg).

The series is UL recognized to UL 5085-1 and UL 5085-2 (file #E207860), CSA certified to C22.2 #66.1-6 and #66.2-6 (file #209651), and self-declared to applicable sections of IEC/EN61558-1 and IEC/EN61558-2-4; this part is RoHS and REACH compliant. Because toroids draw a high inrush current for up to half a cycle when energized, use a slow-blow fuse, time-delayed circuit breaker or soft-start on the supply line.