PAC 1200W Isolation Step Down Transformer | 240V to 100V & 120V Toroidal Voltage Converter (USA / Japan)
Pre-Order: Estimated Dispatch 19-20 October
Power Rating: 1200W Continuous
Delivery Schedule:
This item is in high demand and currently on pre-order. Stock is scheduled for intake with priority dispatches commencing from 19th of October. Full AusPost/courier tracking will be emailed upon dispatch.
The PAC STIS-1200 is an Australian-engineered 1200W isolated toroidal step-down transformer designed to safely run 120V US/Canadian and 100V Japanese electronics, vintage Hi-Fi audio systems, tube amplifiers, kitchen mixers, and precision laboratory instruments on standard Australian 240V mains. Engineered with true physical galvanic isolation, dual dedicated outlets (1 x 100V, 1 x 120V), and rated for 1200W continuous 24/7 duty, it eliminates ground loop hum and electrical line noise. Backed by PAC's 2-Year Australian Replacement Warranty.
PAC Toroidal Voltage Converters — Clean, Hum-Free Isolated Power
Deliver ultra-clean, isolated power to your imported 100V Japanese and 110V–120V North American equipment with the PAC 1200W Isolated Toroidal Step-Down Transformer (SKU: STIS-1200).
Unlike standard autotransformers that share a common neutral wire, the STIS-1200 incorporates true galvanic isolation between the Australian 240V input and low-voltage outputs. By completely severing shared ground loop paths and line interference, it eliminates 50Hz audio hum, protects sensitive microprocessor circuits from line spikes, and provides dead-silent operation ideal for audiophiles and sensitive electronics.
Key Features:
- True Galvanic Isolation: Physically separated, double-insulated primary and secondary windings eliminate ground loops and shield expensive gear from mains spikes.
- Audiophile-Grade Silence: Ultra-quiet toroidal core architecture removes audible mechanical buzz and 50Hz mains hum from audio signals.
- Dual Output Outlets: Includes 1 x 100V (optimised for Japanese 100V equipment) and 1 x 120V (USA/Canada) for simultaneous or dedicated use.
- 1200W Continuous Output: Heavy-gauge pure copper windings deliver 1200 Watts continuous power 24/7.
- Triple Safety Protection: Front-panel resettable miniature circuit breaker (MCB), line fuse, and internal thermal cutoff.
- Australian Standards Compliant: ACMA and EESS Responsible Supplier registered for Australian electrical safety.
- 2-Year Replacement Warranty: PAC commercial-grade engineering supported locally in Australia.
Important Electrical Note: Plugs directly into any standard Australian 10A wall socket. High-efficiency toroidal cores draw an initial magnetization inrush current upon power-up; connection to a standard 6kA C-curve switchboard circuit breaker/RCD is recommended.
Technical Specifications (STIS-1200)
| Specification | Details |
| Brand | PAC (Power and Compressions) |
| Model / SKU | STIS-1200 |
| Transformer Type | Isolated Toroidal Step-Down Transformer |
| Continuous Rating | 1200 Watts (24/7 continuous duty) |
| Input Voltage | 230V – 240V AC, 50Hz |
| Input Connection | Standard Australian 3-pin SAA plug & cord (plugs into any 10A wall outlet) |
| Output Voltages | 1 x 100V (Japan) + 1 x 120V (USA/Canada) |
| Output Sockets | High-retention universal sockets (accepts 2-pin, 2-pin polarized, and 3-pin plugs) |
| Protection | Resettable Miniature Circuit Breaker (MCB), Input Fuse, Thermal Cutout |
| Dimensions (L x W x H) | 27.5 x 22.0 x 19.0 cm (approx. casing size) |
| Net Weight | ~10.0 kg |
| Housing | Heavy-gauge powder-coated steel with dual carry straps |
| Warranty | 24 Months Replacement Warranty |
Appliance Compatibility & Sizing Guide
| Appliance / Equipment Type | Typical Voltage & Draw | Compatibility | Technical Requirement |
|---|---|---|---|
| Hi-Fi Audio & Vintage Turntables (Accuphase, McIntosh, Denon, Sansui 100V/120V) | 100V / 120V up to 800W | Ideal / Recommended | Galvanic isolation removes 50Hz earth ground hum and EMI noise from sensitive phono stages. |
| KitchenAid Stand Mixers (US 120V Tilt-Head & Bowl-Lift) | 120V / 300W – 575W | Fully Compatible | Provides 2x+ surge headroom required for motor kneading heavy dough. |
| US Upright Vacuums & Sewing Machines (Shark Rocket, Singer, Brother 120V) | 120V / 400W – 800W | Fully Compatible | Easily sustains motorized continuous airflow without tripping. |
| High-Draw Heating Items Exceeding 1200W (Kettles, 1500W Blenders, Commercial Espresso) | 120V / 1400W – 2200W | Not Recommended | Requires our larger STIS-2400 or STIS-3000 isolation models. |
Frequently Asked Questions (STIS-1200)
Q: Why is an isolation transformer essential for vintage Japanese audio gear?
A: Standard autotransformers share a ground and neutral connection with Australian mains, which transmits 50Hz grid noise and creates ground loops that cause audible hum through speakers and amplifiers. The PAC STIS-1200 uses physically isolated windings to sever this path, delivering a clean noise floor and protecting delicate vintage components.
Q: Can I run a Japanese 100V turntable and an American 120V preamp at the same time?
A: Yes. The STIS-1200 features dedicated 1 x 100V and 1 x 120V output sockets. Both can be used simultaneously as long as the total combined wattage remains under 1200 Watts continuous.
Q: Does this unit plug into a standard household power point?
A: Yes. At 1200W output, the primary draw from 240V Australian mains is only 5 Amps. It comes fitted with a standard Australian 3-pin 10A plug and works on any standard home wall outlet.
Q: What warranty and local support are provided?
A: The STIS-1200 is backed by PAC's 2-Year Australian Replacement Warranty and complies with ACMA and EESS electrical safety standards.
| Sendle Length | 1 |
|---|---|
| Sendle Width | 1 |
| Sendle Depth | 1 |
Up-Sell Products
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PAC 2400W Isolation Step Down Transformer | 240V to 100V & 120V Toroidal Voltage Converter (USA & Japan to Australia)
Special Price $940.00 Regular Price $1,100.00
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