Hammond 172E 750VA Step-Down Isolation Transformer, 230 to 115VAC
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Create Free Business AccountKey Features
- 750VA isolation transformer: 230VAC 50/60 Hz primary, 115VAC secondary
- Provides circuit isolation and steps down primary voltage
- Electrostatic shield; -38.24 dB surge/noise suppression
- 5 A circuit breaker in primary; hi-pot tested to 2 KV RMS
- 5 ft input cord with NEMA 6-15P 250V plug; 1 ft output cord with NEMA 5-15R
- 94% full-load efficiency, 0.19% full-load THD, 79.58 µA leakage
- C UL and UL listed (File #E211544); indoor use only
The 172E is a 750VA plug-in step-down isolation transformer that converts a 230VAC, 50/60 Hz supply to 115VAC while providing circuit isolation. It suits integrators, lab users and equipment builders who need to run 115VAC North American equipment from a 230VAC source.
An electrostatic shield sits between primary and secondary, the unit is hi-pot tested to 2 KV RMS, and it has a 5 amp circuit breaker in the primary. Measured performance: leakage current 79.58 µA, full-load efficiency 94%, full-load total harmonic distortion 0.19%, surge/noise suppression -38.24 dB and capacitance between windings of 20 pF at 1 kHz.
The input (primary) is a 5 foot cord with a North American 3-wire, 250V NEMA 6-15P plug. The output (secondary) is a 1 foot cord ending in a standard North American 3-wire grounded NEMA 5-15R receptacle with North American pins; the 298G adaptor series offers international pinout adaptor plugs. The unit is for indoor use only and does not convert line frequency.
Overall dimensions are A 4.40 in (112 mm), B 8.70 in (221 mm), C 5.39 in (137 mm), D 3.50 in (89 mm) and E 6.78 in (172 mm), with a shipping weight of 30 lbs (13.61 kg). The 750VA 172E moves to the larger 4.40 in (112 mm) by 5.39 in (137 mm) frame, with a 5 amp primary breaker and -38.24 dB surge/noise suppression. The 172E carries the North American Mark of Safety, C UL and UL listed (File #E211544), and is RoHS and REACH compliant.
Ideal For
- Running 115VAC equipment from a 230VAC supply
- Circuit isolation with voltage step-down
- Plug-in step-down for NEMA 6-15 outlets
- Laboratory test benches where line voltage is used
Overview
| Series | 172 Series, Isolation - Step Down (230VAC to 115VAC) |
| Description | Isolation transformer, plug-in, 230VAC, 50/60 Hz to 115VAC, 750VA, 172 Series |
| Product Type | Isolation transformer, plug-in, step down |
| Short Description | PLUG IN STEP DOWN ISOLATION |
Dimensions
| Overall Dimension A | 4.40 in (112 mm) |
| Overall Dimension B | 8.70 in (221 mm) |
| Overall Dimension C | 5.39 in (137 mm) |
| Overall Dimension D | 3.50 in (89 mm) |
| Overall Dimension E | 6.78 in (172 mm) |
Electrical
| Capacity | 750 VA |
| Function | Circuit isolation & step down of primary voltage |
| Frequency | 50 / 60 Hz (does not convert line frequency) |
| Shielding | Electrostatic shield between primary & secondary |
| Hi-Pot Test | 2 KV RMS |
| Circuit Breaker | 5 A, on primary |
| Leakage Current | 79.58 µA |
| Primary Voltage | 230VAC |
| Receptacle Pins | North American |
| Input Connection | 5 ft (1.52 m) cord with NEMA 6-15P plug |
| Output Connection | 1 ft (0.30 m) cord with NEMA 5-15R receptacle |
| Secondary Voltage | 115VAC |
| Full Load Efficiency | 94% (0.94) |
| International Adaptors | 298G adaptor series (international pinout adaptor plugs) |
| Surge/Noise Suppression | -38.24 dB |
| Rated Current (Per Drawing) | 6.52A |
| Leakage Current (Drawing, Typical) | < 100 µA |
| Full Load Total Harmonic Distortion | 0.19% (0.0019) |
| Capacitance Between Windings @ 1 KHz | 20 pF |
| Surge/Noise Suppression (Drawing, Typical) | -38 dB |
Identifiers
| UPC | 623980761596 |
| UNSPSC | 39121301 |
| Part Number | 172E |
Packaging & Shipping
| Shipping Weight | 30 lbs (13.61 kg) |
| Weight (Drawing) | 30 lbs / 13.61 kg |
| Weight (Ordering Table) | 30 lbs |
Environmental & Protection
| Environment | Indoor use only |
Compliance & Certifications
| UL File # | E211544 |
| RoHS Compliant | Yes |
| Safety Listing | C UL & UL listed (North American Mark of Safety) |
| REACH Compliant | Yes |
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Frequently Asked Questions
What voltages does the 172E handle?▾
The primary is 230VAC at 50/60 Hz and the secondary is 115VAC. It provides circuit isolation and steps the primary voltage down.
What plug is on the 172E input?▾
The 5 foot input cord uses a North American 3-wire, 250V NEMA 6-15P plug. Per the series notes, European (Schuko) plugs appear on old inventory only, following U.L. changes in 2007.
What outlet does the 172E provide?▾
A 1 foot output cord ends in a standard North American 3-wire grounded NEMA 5-15R receptacle. For international pinouts, the 298G adaptor series offers adaptor plugs.
Is the 172E protected against overcurrent?▾
Yes. It has a 5 amp circuit breaker in the primary, and it is hi-pot tested to 2 KV RMS.
Does the 172E convert 50 Hz to 60 Hz?▾
No. These units do not convert line frequency; they operate on 50/60 Hz and change voltage only.
Is the 172E UL listed?▾
Yes. It carries the North American Mark of Safety, C UL and UL listed under File #E211544. It is for indoor use only.
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