Hammond Manufacturing Company Inc. Datasheets for Isolation Transformers

Isolation transformers provide electrical decoupling or isolation to two connected circuits. They have a turn ratio of 1:1.
Isolation Transformers: Learn more

Product Name	Notes
1.82E+119 1.85E+26 1.85E+38 1.86E+122 1.86E+18 1.86E+26 179C 179D 1850000000000 185000000000000 2.29E+26 289C 289G 298C 298E 298F 298G CV1201200 CV1201800 CV120300 CV120600
Transformers - Line Transformers -- 178MG1000 Transformers - Line Transformers -- 178MG1800 Transformers - Line Transformers -- 178MG500 Transformers - Line Transformers -- 240MG1000 Transformers - Line Transformers -- 240MG1800 Transformers - Line Transformers -- 240MG500 Transformers - Line Transformers -- 289MG1000 Transformers - Line Transformers -- 289MG1800 Transformers - Line Transformers -- 289MG500 Transformers - Line Transformers -- 298MG1000 Transformers - Line Transformers -- 298MG1800 Transformers - Line Transformers -- 298MG500	Features: Intended for non-patient connected indoor applications where protection of sensitive electronics is required: High end audio / studio use Medical electronics High end test equipment / laboratory cULus Listed...
Transformers - Power Transformers -- 185C10 Transformers - Power Transformers -- 185C12 Transformers - Power Transformers -- 185C16 Transformers - Power Transformers -- 185C20 Transformers - Power Transformers -- 185C230 Transformers - Power Transformers -- 185C24 Transformers - Power Transformers -- 185C28 Transformers - Power Transformers -- 185C36 Transformers - Power Transformers -- 185D10 Transformers - Power Transformers -- 185D12 Transformers - Power Transformers -- 185D16 Transformers - Power Transformers -- 185D20 Transformers - Power Transformers -- 185D230 Transformers - Power Transformers -- 185D24 Transformers - Power Transformers -- 185D28 Transformers - Power Transformers -- 185D36 Transformers - Power Transformers -- 185E10 Transformers - Power Transformers -- 185E12 Transformers - Power Transformers -- 185E16 Transformers - Power Transformers -- 185E20 Transformers - Power Transformers -- 185E230 Transformers - Power Transformers -- 185E24 Transformers - Power Transformers -- 185E28 Transformers - Power Transformers -- 185E36 Transformers - Power Transformers -- 185F10 Transformers - Power Transformers -- 185F12 Transformers - Power Transformers -- 185F16 Transformers - Power Transformers -- 185F20 Transformers - Power Transformers -- 185F230 Transformers - Power Transformers -- 185F24 Transformers - Power Transformers -- 185F28 Transformers - Power Transformers -- 185F36 Transformers - Power Transformers -- 185G10 Transformers - Power Transformers -- 185G12 Transformers - Power Transformers -- 185G16 Transformers - Power Transformers -- 185G20 Transformers - Power Transformers -- 185G230 Transformers - Power Transformers -- 185G24 Transformers - Power Transformers -- 185G28 Transformers - Power Transformers -- 185G36	Features Dual primary 115/230 VAC 50/60 Hz. operation Dual secondaries for series or parallel connections 4,000 V RMS Hipot test Class F insulation (155 degrees, C) Chassis mount (either two...
Transformers - Audio Transformers - Signal Level -- 107B Transformers - Audio Transformers - Signal Level -- 107D Transformers - Audio Transformers - Signal Level -- 107E Transformers - Audio Transformers - Signal Level -- 107G Transformers - Audio Transformers - Signal Level -- 107H Transformers - Audio Transformers - Signal Level -- 107J Transformers - Audio Transformers - Signal Level -- 107L Transformers - Audio Transformers - Signal Level -- 107N Transformers - Audio Transformers - Signal Level -- 107P Transformers - Audio Transformers - Signal Level -- 107R Transformers - Audio Transformers - Signal Level -- 107T Transformers - Audio Transformers - Signal Level -- 107V Transformers - Audio Transformers - Signal Level -- 107X	Features Perfect for audio input, line matching, isolation or output transformer applications. 150 milliwatt (+/- 1.5 db, 300 Hz. - 50 KHz.) Epoxy potted in an attractive black molded case,...
Transformers - Audio Transformers - Signal Level -- 109E Transformers - Audio Transformers - Signal Level -- 109F Transformers - Audio Transformers - Signal Level -- 109G Transformers - Audio Transformers - Signal Level -- 109H Transformers - Audio Transformers - Signal Level -- 109J Transformers - Audio Transformers - Signal Level -- 109K Transformers - Audio Transformers - Signal Level -- 109L Transformers - Audio Transformers - Signal Level -- 109N Transformers - Audio Transformers - Signal Level -- 109R Transformers - Audio Transformers - Signal Level -- 109T	Features Perfect for audio input, line matching, isolation or output transformer applications. 2 watt (+/- 1.5 db, 300Hz. - 50 KHz.). Epoxy potted in an attractive black molded case, Pin...
Transformers - Audio Transformers - Signal Level -- 108E Transformers - Audio Transformers - Signal Level -- 108F Transformers - Audio Transformers - Signal Level -- 108G Transformers - Audio Transformers - Signal Level -- 108H Transformers - Audio Transformers - Signal Level -- 108J Transformers - Audio Transformers - Signal Level -- 108K Transformers - Audio Transformers - Signal Level -- 108L Transformers - Audio Transformers - Signal Level -- 108N Transformers - Audio Transformers - Signal Level -- 108P Transformers - Audio Transformers - Signal Level -- 108T	Features Perfect for audio input, line matching, isolation or output transformer applications. 500 milliwatt (+/- 1.5 db, 300 Hz. - 50 KHz.). Epoxy potted in an attractive black molded case,...
Transformers - Line Transformers - Straight Isolation -- 171A Transformers - Line Transformers - Straight Isolation -- 171B Transformers - Line Transformers - Straight Isolation -- 171C Transformers - Line Transformers - Straight Isolation -- 171E Transformers - Line Transformers - Straight Isolation -- 171F Transformers - Line Transformers - Straight Isolation -- 171G	Features Primary 115VAC, 50/60 Hz., Secondary 115VAC Provides complete circuit isolation. Electrostatic shield between primary & secondary to greatly attenuate surges and noise. Hi-pot tested to 2 KV RMS. Circuit...
Transformers - Power Transformers -- 165S12 Transformers - Power Transformers -- 165S18 Transformers - Power Transformers -- 165S30 Transformers - Power Transformers -- 165V12	Features 115 VAC - 60 Hz. single primary All secondaries are center tapped (C.T.) Open style, 4 hole frame chassis mount. Minimum 6" long leads or copper tabs with holes.
Transformers - Power Transformers -- 160F28	Features 20 output voltages to choose from (5 - 120VAC R.M.S.) Six VA size models available from - .5 to 24 VA Vertical mount, split bobbin design. 1.2, 4.4, 10,...
Transformers - Power Transformers -- 162D10 Transformers - Power Transformers -- 162F12 Transformers - Power Transformers -- 162G12	Features 20 output voltages to choose from (5 - 120VAC R.M.S.) Six VA size models available from - 1.1 to 36VA Both series operate on 50/60 Hz current Low profile,...
Transformers - Audio Transformers - Signal Level -- 142A Transformers - Audio Transformers - Signal Level -- 142B Transformers - Audio Transformers - Signal Level -- 142C Transformers - Audio Transformers - Signal Level -- 142D	Features Applications: Driver, Input, Interstage, Isolation 100mW power level at 200Hz. - 15kHz Pin type (0.0375" x .02"), P.C. board mount. Economical, open type construction. Frequency response 200 Hz. -...
Transformers - Power Transformers -- 186B12 Transformers - Power Transformers -- 186B24 Transformers - Power Transformers -- 186C12 Transformers - Power Transformers -- 186D10 Transformers - Power Transformers -- 186D24 Transformers - Power Transformers -- 186F24 Transformers - Power Transformers -- 186F28 Transformers - Power Transformers -- 186F36 Transformers - Power Transformers -- 186F56 Transformers - Power Transformers -- 187D48	Features Choice of two primaries: Single Primary 115VAC (187 series) or Dual Primary 115/230VAC (186 series). Either series operates on 50/60 Hz. Combination solder or quick connect terminals. Split bobbin...
Transformers - Audio Transformers - Signal Level -- 801A Transformers - Audio Transformers - Signal Level -- 802A Transformers - Audio Transformers - Signal Level -- 804A	Features Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with hardware. Includes wire leads (minimum length of 4"). Frequency response +/- 0.5 db max. from...
Transformers - Audio Transformers - Signal Level -- 850GA Transformers - Audio Transformers - Signal Level -- 850HA Transformers - Audio Transformers - Signal Level -- 850QA	Features Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with mounting hardware. Sealed case and wax potted core internally for stable characteristics and long life.
Transformers - Power Transformers -- 166G14 Transformers - Power Transformers -- 166G20 Transformers - Power Transformers -- 166G25 Transformers - Power Transformers -- 166G28 Transformers - Power Transformers -- 166J12 Transformers - Power Transformers -- 166J14 Transformers - Power Transformers -- 166J25 Transformers - Power Transformers -- 166J28 Transformers - Power Transformers -- 166J33 Transformers - Power Transformers -- 166J8 Transformers - Power Transformers -- 166K18 Transformers - Power Transformers -- 166L12 Transformers - Power Transformers -- 166L14 Transformers - Power Transformers -- 166L20 Transformers - Power Transformers -- 166L24 Transformers - Power Transformers -- 166L8 Transformers - Power Transformers -- 166M16 Transformers - Power Transformers -- 166M18 Transformers - Power Transformers -- 166N12 Transformers - Power Transformers -- 166N24 Transformers - Power Transformers -- 166N6 Transformers - Power Transformers -- 166Q12 Transformers - Power Transformers -- 166V5	Features Economical single primary 115 VAC, 60 Hz. (or 117 50/60 Hz. see table) - (If you require 117/234 or 50/60 Hz. operation or dual secondaries check out our versatile...
Transformers - Line Transformers -- 298G3 Transformers - Line Transformers -- 298G4 Transformers - Line Transformers -- 298G6 Transformers - Line Transformers -- 298G7	Features For use with our 171, 172, 175, 176, 179, 289 & 298 transformers. Heavy duty design with plastic shell & double wipe contacts. Indoor use only. Allows for ground...
Transformers - Power Transformers -- 229A12 Transformers - Power Transformers -- 229C10 Transformers - Power Transformers -- 229C16 Transformers - Power Transformers -- 229C20 Transformers - Power Transformers -- 229C30 Transformers - Power Transformers -- 229D24 Transformers - Power Transformers -- 229D40	Features Low profile mounting, dual - split bobbin design. Low primary to secondary coupling, balanced windings, no electrostatic shield required and low EMF radiation due to semi-toroidal design. Universal dual...
Transformers - Power Transformers -- 182J117 Transformers - Power Transformers -- 182J15 Transformers - Power Transformers -- 182K15 Transformers - Power Transformers -- 182K9 Transformers - Power Transformers -- 182L12 Transformers - Power Transformers -- 182L18 Transformers - Power Transformers -- 182L60 Transformers - Power Transformers -- 182M117 Transformers - Power Transformers -- 182M15 Transformers - Power Transformers -- 182M30 Transformers - Power Transformers -- 182M9 Transformers - Power Transformers -- 182N15 Transformers - Power Transformers -- 182N9 Transformers - Power Transformers -- 182P12 Transformers - Power Transformers -- 182P22 Transformers - Power Transformers -- 182P30 Transformers - Power Transformers -- 182Q12 Transformers - Power Transformers -- 182Q6 Transformers - Power Transformers -- 182Q9 Transformers - Power Transformers -- 182R117 Transformers - Power Transformers -- 182S12 Transformers - Power Transformers -- 182S24 Transformers - Power Transformers -- 182T12 Transformers - Power Transformers -- 182T24 Transformers - Power Transformers -- 182T30 Transformers - Power Transformers -- 182T60 Transformers - Power Transformers -- 182U24 Transformers - Power Transformers -- 182U30 Transformers - Power Transformers -- 182V24 Transformers - Power Transformers -- 182V40	Features Low profile, lightweight, cool running - due to high efficiency toroidal design Dual 117/234 VAC primary, 50/60 Hz. operation Units are designed to have all windings engaged. Center single...
Transformers - Line Transformers - Step Down Isolation -- 179E Transformers - Line Transformers - Step Down Isolation -- 179F Transformers - Line Transformers - Step Down Isolation -- 179G	Features Primary 115VAC, 50/60 Hz., Secondary 95VAC. Provides circuit isolation. Electrostatic shield between primary & secondary. World wide applications, 50 or 60 Hz. operation, step down (115VAC to 95 VAC).
Transformers - Line Transformers - Straight Isolation -- 169PS Transformers - Line Transformers - Straight Isolation -- 169QS Transformers - Line Transformers - Straight Isolation -- 169RS Transformers - Line Transformers - Straight Isolation -- 169SS Transformers - Line Transformers - Straight Isolation -- 169TS Transformers - Line Transformers - Straight Isolation -- 169VS Transformers - Line Transformers - Straight Isolation -- 169WS	Features Primary 115VAC, 60 Hz., Secondary 115VAC Electrostatic shield between primary & secondary Connection by flexible leads, 8" minimum length Perfect for circuit isolation or "Classic" bias power supply CSA...
Transformers - Line Transformers - Straight Isolation -- 169C Transformers - Line Transformers - Straight Isolation -- 169E Transformers - Line Transformers - Straight Isolation -- 169G Transformers - Line Transformers - Straight Isolation -- 169J	Features Primary 115VAC, 60 Hz. Secondary taps @ 90, 100, 110, 115, 120 & 130VAC Electrostatic shield between primary & secondary Connection by flexible leads, 8" minimum length Perfect for...
Transformers - Power Transformers -- 266EA24 Transformers - Power Transformers -- 266F12 Transformers - Power Transformers -- 266G9 Transformers - Power Transformers -- 266GB6 Transformers - Power Transformers -- 266GD12 Transformers - Power Transformers -- 266J24 Transformers - Power Transformers -- 266J48 Transformers - Power Transformers -- 266JB6 Transformers - Power Transformers -- 266K18 Transformers - Power Transformers -- 266L24 Transformers - Power Transformers -- 266L48 Transformers - Power Transformers -- 266M2 Transformers - Power Transformers -- 266M25 Transformers - Power Transformers -- 266M48 Transformers - Power Transformers -- 266M5 Transformers - Power Transformers -- 266N48 Transformers - Power Transformers -- 266P18	Features Primary 117/234 VAC, 50/60 Hz. All units have dual secondaries except 266LA25 (C.T. secondary only). If you only require a single primary & secondary check out our more economical...
Transformers - Line Transformers - Straight Isolation -- 178CT Transformers - Line Transformers - Straight Isolation -- 178DT Transformers - Line Transformers - Straight Isolation -- 178ET Transformers - Line Transformers - Straight Isolation -- 178FT Transformers - Line Transformers - Straight Isolation -- 178GT	Features Primary 120VAC, 50/60 Hz., Secondary 120VAC. Provides circuit isolation. Toroidal transformer for high isolation, low noise, light weight, cool operation and low profile. World wide applications, 50 or 60...
Transformers - Line Transformers - Step Up Isolation -- 298CT Transformers - Line Transformers - Step Up Isolation -- 298DT Transformers - Line Transformers - Step Up Isolation -- 298ET Transformers - Line Transformers - Step Up Isolation -- 298FT Transformers - Line Transformers - Step Up Isolation -- 298GT	Features Primary 120VAC, 50/60 Hz., Secondary 240VAC. Provides circuit isolation. Toroidal transformer for high isolation, low noise, light weight cool operation and low profile. 50 or 60 Hz. operation, step...
Transformers - Line Transformers - Step Down Isolation -- 172A Transformers - Line Transformers - Step Down Isolation -- 172B Transformers - Line Transformers - Step Down Isolation -- 172D Transformers - Line Transformers - Step Down Isolation -- 172E Transformers - Line Transformers - Step Down Isolation -- 172F	Features Primary 230VAC, 50/60 Hz. Secondary 115VAC Circuit breaker in primary. Provides circuit isolation & steps down primary voltage. Hi-pot tested to 2 KV RMS. Electrostatic shield between primary &
Transformers - Line Transformers - Step Down Isolation -- 289CT Transformers - Line Transformers - Step Down Isolation -- 289DT Transformers - Line Transformers - Step Down Isolation -- 289ET Transformers - Line Transformers - Step Down Isolation -- 289FT Transformers - Line Transformers - Step Down Isolation -- 289GT	Features Primary 240VAC, 50/60 Hz., Secondary 120VAC. Provides circuit isolation. Toroidal transformer for high isolation, low noise, light weight, cool operation and low profile. World wide applications, 50 or 60...
Transformers - Line Transformers - Straight Isolation -- 240CT Transformers - Line Transformers - Straight Isolation -- 240DT Transformers - Line Transformers - Straight Isolation -- 240ET Transformers - Line Transformers - Straight Isolation -- 240FT Transformers - Line Transformers - Straight Isolation -- 240GT	Features Primary 240VAC, 50/60 Hz., Secondary 240VAC. Provides circuit isolation. Toroidal transformer for high isolation, low noise, light weight, cool operation and low profile. World wide applications, 50 or 60...
Transformers - Audio Transformers - Signal Level -- 560G	Features Rugged black epoxy potted case with 9 pin connections (.025" square by 0.5" long). Frequency response minimum @ 0 dbm +/- 1 db max. (+/- 0.5 db is typical)...
Transformers - Line Transformers - Autotransformers -- 168B Transformers - Line Transformers - Autotransformers -- 168C Transformers - Line Transformers - Autotransformers -- 168D Transformers - Line Transformers - Autotransformers -- 168E Transformers - Line Transformers - Autotransformers -- 168F Transformers - Line Transformers - Autotransformers -- 168H Transformers - Line Transformers - Autotransformers -- 168J	Features Single winding, does not provide isolation, for use where equipment is already isolated and only voltage change is required. Flexible world wide applications, 50 or 60 Hz. operation, 115VAC...
Transformers - Line Transformers - Autotransformers -- 170 Transformers - Line Transformers - Autotransformers -- 170A Transformers - Line Transformers - Autotransformers -- 170AE Transformers - Line Transformers - Autotransformers -- 170B Transformers - Line Transformers - Autotransformers -- 170BE Transformers - Line Transformers - Autotransformers -- 170C Transformers - Line Transformers - Autotransformers -- 170CE Transformers - Line Transformers - Autotransformers -- 170D Transformers - Line Transformers - Autotransformers -- 170DE Transformers - Line Transformers - Autotransformers -- 170E Transformers - Line Transformers - Autotransformers -- 170EE Transformers - Line Transformers - Autotransformers -- 170F Transformers - Line Transformers - Autotransformers -- 170FE Transformers - Line Transformers - Autotransformers -- 170G Transformers - Line Transformers - Autotransformers -- 170GE Transformers - Line Transformers - Autotransformers -- 170J Transformers - Line Transformers - Autotransformers -- 170JE Transformers - Line Transformers - Autotransformers -- 170SE	Features Single winding, does not provide isolation, for use where equipment is already isolated and only voltage change is required. Flexible world wide applications, 50 or 60 Hz. operation, step...
Transformers - Line Transformers - Autotransformers -- 175A-NA Transformers - Line Transformers - Autotransformers -- 175B-NA Transformers - Line Transformers - Autotransformers -- 175C-NA Transformers - Line Transformers - Autotransformers -- 175D-NA Transformers - Line Transformers - Autotransformers -- 175E-NA Transformers - Line Transformers - Autotransformers -- 175F-NA Transformers - Line Transformers - Autotransformers -- 175G-NA	Features Single winding, does not provide isolation, for use where equipment is already isolated and only voltage change is required. World wide applications, 50 or 60 Hz. operation, step down...
Transformers - Line Transformers - Autotransformers -- 176A Transformers - Line Transformers - Autotransformers -- 176B Transformers - Line Transformers - Autotransformers -- 176C Transformers - Line Transformers - Autotransformers -- 176D Transformers - Line Transformers - Autotransformers -- 176E Transformers - Line Transformers - Autotransformers -- 176F Transformers - Line Transformers - Autotransformers -- 176G	Features Single winding, does not provide isolation, for use where equipment is already isolated and only voltage change is required. World wide applications, 50 or 60 Hz. operation, step up...
Transformers - Audio Transformers - Signal Level -- 145B	Features Small, economical, open, two hole horizontal bracket mount. Insulated, color coded flexible leads, 4" long minimum (143, 144 & 145 Series) or 3" long minimum (146 Series). For a...
Transformers - Audio Transformers - Speaker Level -- 119Y100 Transformers - Audio Transformers - Speaker Level -- 119Y250 Transformers - Audio Transformers - Speaker Level -- 119Y30 Transformers - Audio Transformers - Speaker Level -- 119Y60	Features Suitable for driving from solid state amplifiers where isolated windings are not required or can be used with our "Classic" 1600 tube output transformers to provide a 25V or...
Transformers - Instrument Transformers -- HX54A Transformers - Instrument Transformers -- HX74A Transformers - Instrument Transformers -- HX94A Transformers - Instrument Transformers -- VT55A Transformers - Instrument Transformers -- VT57A Transformers - Instrument Transformers -- VT59A	Features Used (with 150 Volt full scale A.C. voltmeters) to measure the voltage of 240, 480 or 600 VAC systems. Primary insulated for 4.0 KV rms test, suitable for L.V.
Transformers - Class 2 - Energy Limiting Transformers -- BPD2E Transformers - Class 2 - Energy Limiting Transformers -- BPD2EE Transformers - Class 2 - Energy Limiting Transformers -- BPD2F Transformers - Class 2 - Energy Limiting Transformers -- BPD2FF Transformers - Class 2 - Energy Limiting Transformers -- BPD2G Transformers - Class 2 - Energy Limiting Transformers -- BPE2E Transformers - Class 2 - Energy Limiting Transformers -- BPE2EE Transformers - Class 2 - Energy Limiting Transformers -- BPE2F Transformers - Class 2 - Energy Limiting Transformers -- BPE2FF Transformers - Class 2 - Energy Limiting Transformers -- BPE2G	Features Used in AC powered chimes, door bells, security systems, decorative lighting, furnaces, humidifiers, appliances, vending machines, intercom system type applications. Enclosed in an attractive plug-in black plastic case. For...
Transformers - Class 2 - Energy Limiting Transformers -- BD2E Transformers - Class 2 - Energy Limiting Transformers -- BE2F Transformers - Class 2 - Energy Limiting Transformers -- BE2G	Features Used in chimes, door bells, security systems, decorative lighting, furnaces, humidifiers, appliances, vending machines, intercom system type applications. Rugged, low noise, cool running design, indoor use only. Stripped wire...
Transformers - Audio Transformers - Speaker Level -- 119DA	In response to requests from the "Collins Collectors Association" we developed a high quality, matching audio transformer for older equipment with 600 ohm audio output, driving modern low impedance speakers.

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