PAC 3000W Isolation Step Down Transformer | 240V to 100V & 120V Toroidal Voltage Converter (USA & Japan to Australia)
✓ In Stock: Dispatched Within 24 Hours from Adelaide
Power Rating: 3000W Continuous 24/7 Galvanic Isolation
Fast Dispatch Guarantee: In stock at our South Australian warehouse. Dispatched within 24 hours with full Australia Post or courier online tracking. Official ABN tax invoice included with every order.
The PAC STIS-3000 is an industrial-grade 3000W continuous isolated toroidal step-down transformer engineered for high-demand master audio setups, laboratory instruments, and high-end imported equipment:
- True Physical Galvanic Isolation: Completely severs mains ground loops, eliminates 50Hz hum, and removes line interference between Australian 240V mains and delicate gear.
- Dual Independent Voltage Outlets: Dedicated heavy-duty front sockets for 1 x 100V (Japan) and 1 x 120V (North America).
- Massive 3000W Toroidal Core: Engineered for continuous 24/7 duty with zero acoustic hum and high inductive surge headroom.
- Built-In Circuit Protection: Front-panel resettable miniature circuit breaker (MCB) and dual-stage internal thermal safety cutoff.
- Local Support: Covered by PAC's 2-Year South Australian Replacement Warranty.
PAC Toroidal Voltage Converters — Flagship 3000W Galvanic Isolation for High-End Audio & Commercial Equipment
Deliver ultra-clean, noise-free, and fully isolated power to high-wattage imported 100V Japanese and 110V–120V North American equipment in Australia with the PAC 3000W Isolated Toroidal Step-Down Transformer (SKU: STIS-3000).
Unlike standard autotransformers that share a common neutral and ground line with household and commercial mains grids, the STIS-3000 features true galvanic isolation via completely separated primary and secondary high-purity copper windings. This creates a clean local power island, severing ground loops, eliminating 50Hz mains hum, filtering line hash from dimmers and appliances, and shielding sensitive electronics from surges.
Engineered around a massive, precision-wound toroidal core housed inside a heavy-gauge steel enclosure, the STIS-3000 operates with virtually zero mechanical hum or magnetic leakage. It delivers a full 3000 Watts continuous duty across dedicated 100V (Japan) and 120V (USA) output sockets, effortlessly handling large multi-stage audio monoblock amplifiers, studio mixing consoles, high-end medical equipment, and high-wattage espresso machinery.
Key Features:
- True Physical Galvanic Isolation: Electrically separates output circuits from the mains supply, breaking ground loop pathways and delivering an ultra-silent audio noise floor.
- Massive Toroidal Core Architecture: Delivers superior energy efficiency, low magnetic stray fields, and silent operation compared to traditional laminated transformers.
- Multi-Voltage Dedicated Outlets: Equipped with 1 x 100V socket (Japan) and 1 x 120V socket (USA/Canada) for single or simultaneous operation up to 3000W total continuous load.
- High-Retention Pressed Metal Contacts: Heavy-duty internal socket pins accept 2-pin, 2-pin polarized, and 3-pin grounded plugs with firm, arcless retention.
- Resettable Circuit Breaker (MCB): Front-panel circuit breaker trips cleanly during overcurrent conditions and resets with a single push—no replacement fuses needed.
- Continuous 24/7 Duty Rating: High-grade thermal dissipation design engineered for nonstop continuous operation without overheating.
- Australian Standards Compliant: ACMA and EESS Responsible Supplier registered for Australian electrical safety.
- 2-Year Replacement Warranty: Commercial-grade PAC engineering backed directly from South Australia.
Technical Specifications (STIS-3000)
| Specification | Details |
| Brand | PAC (Power and Compressions) |
| Model / SKU | STIS-3000 |
| Transformer Type | Fully Isolated Toroidal Step-Down Transformer (Galvanic Isolation) |
| Continuous Power Rating | 3000 Watts (24/7 continuous duty) |
| Peak / Intermittent Rating | 3500 Watts (up to 30 minutes) |
| Input Voltage | 230V – 240V AC, 50Hz |
| Input Connection | Standard Australian 3-pin heavy-duty plug & cord |
| Output Voltages | 1 x 100V AC (Japan) + 1 x 120V AC (USA/Canada) |
| Output Sockets | Universal high-retention sockets (accepts 2-pin, 2-pin polarized, and 3-pin plugs) |
| Protection | Front-Panel Miniature Circuit Breaker (MCB) + Dual-Stage Internal Thermal Cutout |
| Housing | Heavy-gauge ventilated powder-coated steel chassis with dual reinforced carry handles |
| Warranty | 24 Months Replacement Warranty |
Appliance Compatibility & Sizing Guide
| Appliance / Equipment Type | Typical Voltage & Draw | Compatibility | Technical Recommendation |
|---|---|---|---|
| Audiophile High-Power Monoblock & Tube Amplifiers (McIntosh, Pass Labs, Audio Research 120V) | 120V (500W – 2500W) | Ideal / Recommended | Galvanic isolation eradicates mains ground hum while providing abundant dynamic current headroom. |
| Commercial Recording Studio Racks & Mixing Consoles | 100V / 120V (up to 3000W) | Fully Compatible | Powers entire gear racks cleanly from a single isolated power source. |
| High-End Single & Dual Boiler Espresso Machines (La Marzocco, Slayer, Rocket 120V) | 120V (1400W – 2200W) | Fully Compatible | Maintains rock-steady voltage across high-current heating element cycles. |
| Scientific, Diagnostic & Laboratory Test Equipment | 100V / 120V (up to 3000W) | Fully Compatible | Isolated earth reference prevents test signal noise and measurement drifting. |
Frequently Asked Questions (STIS-3000)
Q: What is the difference between the ST-3000 autotransformer and the STIS-3000 isolation transformer?
A: An autotransformer (ST-3000) is designed for general motorized appliances and power tools where ground sharing is acceptable. The STIS-3000 is a dedicated isolation transformer with physically separated primary and secondary copper windings (galvanic isolation). It severs electrical ground loops and prevents RF/mains line noise from reaching sensitive audio components, studio gear, and delicate microprocessors.
Q: Can I run Japanese 100V and US 120V gear simultaneously?
A: Yes. The STIS-3000 includes dedicated 100V and 120V sockets. Both can be utilized at the same time provided the combined continuous load remains within 3000 Watts.
Q: How does the circuit breaker function during an overload?
A: The STIS-3000 features a front-panel resettable miniature circuit breaker (MCB). If a current spike or overload occurs, the switch trips automatically. Once the load is adjusted, press the switch to reset—no replacement fuses are required.
Q: Does the unit produce any physical humming noise during operation?
A: No. Because it utilizes a premium toroidal core rather than a standard EI laminated core, mechanical vibration and audible hum are practically imperceptible, making it ideal for dedicated listening rooms and studios.
| Sendle Length | 1 |
|---|---|
| Sendle Width | 1 |
| Sendle Depth | 1 |
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