Hammond 185D28 43VA 28V Center-Tapped Chassis Mount Transformer
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Create Free Business AccountKey Features
- 43VA rating: 28V C.T. @ 1.5A with secondaries in series
- 14V @ 3.0A with secondaries in parallel
- Dual primary 115/230 VAC, 50/60 Hz, for global use
- Dual use terminals: solder lug or quick connect
- Class F (155 degrees C) insulation, 4,000 V RMS hipot tested, dual bobbin
- Chassis mount, figure A: 2.81 in hole-to-hole width
- C UL US recognized (E207860), TUV Type Approved, CE; RoHS and REACH compliant
The 185D28 is a 43VA low voltage chassis mount power transformer from the 185 Series, built for global use with a dual 115/230 VAC primary and 50/60 Hz operation. It suits OEM engineers, panel builders and equipment designers who need one transformer that can be wired for either mains voltage.
The 185D28 is the 28V C.T. model of the 43VA D size, rated 1.5A in series or 14V at 3.0A in parallel. The dual secondaries are brought out for series or parallel connection, and the primaries are wired in parallel for 115V or in series for 230V.
Construction uses a dual bobbin with Class F insulation (155 degrees C), and the unit is 4,000 V RMS hipot tested. Dual use terminals accept either solder or quick connect termination; terminal lugs are listed at 0.19 in wide and 0.02 in thick.
The 185D28 measures 3.12 in wide, 2.22 in deep and 2.68 in high (79.2 x 56.4 x 68.1 mm) including the mounting feet, weighs 1.75 lbs and ships at 1.67 lbs (0.76 kg). It chassis mounts per mounting figure A, with a 2.81 in hole-to-hole width. Listings include C UL US recognition (E207860), TUV Type Approval and CE certification to IEC 950 (EN 60-742 Safety Isolating Transformers); it is RoHS and REACH compliant.
Ideal For
- Chassis-mounted low-voltage AC supply in equipment and control panels
- Equipment built for global use on 115 or 230 VAC, 50/60 Hz
- 28V center-tapped or 14V parallel secondary supply
- Designs needing solder lug or quick connect transformer terminals
Mounting
| Mounting Type | Chassis mount |
| Mounting Figure | A |
| Hole To Hole Mounting Depth | - |
| Hole To Hole Mounting Width | 2.81 in (71.4 mm) |
Overview
| Series | 185 Series (Low Voltage Chassis Mount - 25 VA to 175 VA, Global Use - 115/230 V Primary) |
| Description | Transformer, chassis mount, 115/230V, 43VA, 28V C.T. @1.5A, 185 Series |
| Product Type | Low voltage chassis mount power transformer |
| Short Description | POWER TX 43 VA 115/230VAC |
Dimensions
| Weight | 1.75 lbs / 0.8 kg |
| Overall Depth (Includes Mounting Feet) | 2.22 in (56.4 mm) |
| Overall Width (Includes Mounting Feet) | 3.12 in (79.2 mm) |
| Overall Height (Includes Mounting Feet) | 2.68 in (68.1 mm) |
Electrical
| Primary | Dual primary 115/230 VAC |
| Frequency | 50/60 Hz |
| Hipot Test | 4,000 V RMS |
| Secondaries | Dual secondaries for series or parallel connections |
| Power Rating | 43 VA |
| Primary Pins | 1, 2, 5, 6 (115V: parallel connection; 230V: series connection) |
| Secondary Pins | 7, 8, 11, 12 (parallel or series connection) |
| Secondary VAC (RMS), Series | 28V C.T. @ 1.5A |
| Secondary VAC (RMS), Parallel | 14V @ 3.0A |
Identifiers
| UPC | 623980492186 |
| UNSPSC | 39121301 |
| Part Number | 185D28 |
Packaging & Shipping
| Shipping Weight | 1.67 lbs (0.76 kg) |
Construction & Finish
| Terminals | Dual use terminals (solder lug or quick connect) |
| Construction | Dual bobbin construction |
| Insulation Class | Class F (155 degrees C) |
| Terminal Lug Width | 0.19 in (4.7 mm) |
| Terminal Lug Thickness | 0.02 in (0.5 mm) |
Compliance & Certifications
| CE | CE certified to IEC 950 (Approved to EN 60-742 Safety Isolating Transformers) |
| TUV | TUV Type Approved |
| RoHS Compliant | Yes |
| UL Recognition | C UL US recognized (E207860) |
| REACH Compliant | Yes |
| Agency Listings (Part Drawing) | cURus, CE, and TUV |
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Frequently Asked Questions
What are the output ratings of the 185D28?▾
At 43VA it delivers 28V C.T. @ 1.5A with the two secondaries in series, or 14V @ 3.0A with them connected in parallel.
Can it be used on 115V and 230V supplies?▾
Yes. It has a dual 115/230 VAC primary for 50/60 Hz operation: wire the primaries in parallel for 115V or in series for 230V.
What kind of terminals does it have?▾
Dual use terminals that work as solder lugs or quick connects. Terminal lugs are 0.19 in wide and 0.02 in thick.
What size is the 185D28 and how is it mounted?▾
It is 3.12 in wide, 2.22 in deep and 2.68 in high (79.2 x 56.4 x 68.1 mm) including the mounting feet, and chassis mounts per figure A with a 2.81 in hole-to-hole width. Weight is 1.75 lbs; shipping weight is 1.67 lbs (0.76 kg).
What approvals does it carry?▾
The 185 Series is C UL US recognized (E207860), TUV Type Approved and CE certified to IEC 950 (Approved to EN 60-742 Safety Isolating Transformers). This part is RoHS and REACH compliant.
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