The BIGZUN 4HP Eurorack PSU is an ultra‑compact power module designed for small and medium modular systems. It provides stable +12V and –12V, proper filtering, protection circuits and a unique Reverse‑Action Safety Switch that prevents accidental activation during patching or transport.

Features

- 4HP compact format – perfect for skiffs and portable cases.

- Stable ±12V rails based on the MC34063 converter.

- Reverse‑Action Safety Switch – reversed switch logic ensures accidental pressing will not turn the power on.

Protection:

- reverse polarity diode,

- resettable PTC fuses,

- input/output filtering.

- LED indicators for +12V and –12V.

- BIGZUN signature panel with math/electronics artwork.

Technical Specs

- Input: +12V DC

- Output: +12V / –12V

- –12V current: up to 750 mA

- +12V current: depends on external supply

- Width: 4HP

- Depth: skiff‑friendly

- Connectors: 2×8 Eurorack headers

- Protection: PTC, diode, filtering

- Reverse‑Action Safety Switch

The module uses a reversed‑logic power switch, ensuring that accidental pressing will not turn the power on. This Safety‑First design is ideal for live performance and tightly packed racks.

External Power Supply Required

The BIGZUN PSU is not a standalone mains power supply.

It requires an external +12 V DC adapter (1–2 A recommended) with a 5.5/2.1 mm barrel connector.

The module converts this input into +12 V / –12 V Eurorack rails.

The BIGZUN PSU is sold without a bus board.

A separate bus board or flying bus cable is required to distribute power in a Eurorack system.

It is not included, but available separately as an additional item.

Shipping from Poland, securely packed with multi‑layer protection. Every BIGZUN module is protected against shock and moisture, and sent as priority mail. Typical delivery time: 10–14 days. Tracking available.