Balboa 120V Duplex Transformer 9 Position Plug (30274-1)

Type:	Electrical: Transformers
Mfr	Balboa Water Group
Mfg Part #	30274-1
Hzn Part #	59-138-1260
Replaces:	30274-1, 305705, 9711-43, BAL302741, BB302741

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TAGS: balboawater, electrical, transformers

Details

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SEE REPLACEMENT PART: OBSOLETE

Transformers are foundational electrical components because they help deliver the proper voltage conditions needed by sensitive spa electronics and supporting equipment. This 120V duplex transformer with 9 position plug is designed for compatible Balboa control applications where dependable electrical conversion and proper connector configuration are both essential to stable system operation.

Unlike cosmetic parts, a transformer directly affects how reliably the control system and related devices function. If voltage conversion becomes inconsistent, symptoms can spread across the spa in frustrating ways—from control irregularities to accessory issues. Using the proper Balboa transformer helps preserve the original electrical design and gives service professionals greater confidence that the repair is being done correctly.

The 9 position plug detail is especially important in real-world service because connector mismatch can stop an installation before it starts. Choosing the right OEM-style transformer reduces guesswork and supports cleaner, more efficient repair work in systems where downtime matters.

Key Benefits

120V duplex transformer for compatible Balboa electrical applications
9 position plug supports proper connector matching
Helps maintain stable electrical conditions for spa equipment
Useful in control pack repair, replacement, and restoration work
Supports dependable long-term performance in Balboa-based systems

Balboa Water Group – Spa Systems, Pumps, Heaters & Control Components

Who is Balboa Water Group?

Balboa Water Group is the world’s largest manufacturer of spa systems, components, and control technology, producing an estimated 70% of all hot tub systems globally. With decades of industry leadership, Balboa is the driving force behind many of the pumps, heaters, control packs, and circuit boards used by top spa brands. Known for innovation, reliability, and engineering excellence, Balboa has become the standard for spa system performance worldwide.

What products does Balboa Water Group specialize in?

Balboa specializes in complete spa system solutions, including control systems, topside panels, circuit boards, heaters, pumps, sensors, jets, and accessories. Their systems are designed to seamlessly integrate temperature control, water flow, filtration, and lighting. Balboa products are widely used in both new spa manufacturing and replacement parts, making them one of the most commonly sourced brands for hot tub repair and upgrades.

Why choose Balboa Water Group parts for your pool or spa?

Balboa parts are trusted for their compatibility, durability, and consistent performance across a wide range of spa systems. Because Balboa components are used in the majority of hot tubs on the market, finding compatible replacement parts is easier and more reliable. Their advanced control technology allows precise management of temperature, jet functions, and energy usage, helping extend equipment life while improving the overall spa experience.

How do you identify and choose the correct Balboa Water Group part?

To select the correct Balboa part, it’s important to match your existing system’s model number, circuit board type, heater configuration, and topside control compatibility. Checking labels on control packs and referencing wiring diagrams or product manuals ensures proper fit and function. Choosing the correct Balboa component helps maintain system efficiency, prevents compatibility issues, and ensures safe operation.

Need help finding the right Balboa Water Group part?

At Bath & Spa Parts Online, we carry a wide selection of Balboa Water Group pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.