Zinsco | UBIZ30B | Circuit Breaker | 30A | Bolt-On

Introducing the Zinsco UBIZ30B 30A Bolt-On Circuit Breaker — a purpose-built protection device designed for Zinsco panels that require precise fit and reliable overcurrent protection. This 30-amp breaker is identified by the UBIZ30B part number, making it straightforward to source the exact replacement or retrofit part when compatibility matters most.

Why choose the UBIZ30B?

• Direct compatibility: The UBIZ30B is the exact part reference you’ll want for matching Zinsco panels that accept bolt-on 30A breakers. Use the part number as your primary compatibility check.
• Secure bolt-on mounting: Built for a robust, stationary connection to the panel bus, reducing looseness and ensuring steady electrical contact over time.
• Correct amperage for safe protection: 30A rating provides appropriate protection for circuits designed to handle up to 30 amps, helping balance load and safety in residential or light commercial applications.
• Maintenance, retrofit, or replacement: Specifically suitable when upgrading aging electrical systems, replacing worn hardware, or retrofitting to meet updated protection requirements.

Specifications

• Brand: Zinsco
• Model: UBIZ30B
• Amperage: 30A
• Mounting: Bolt-On

Where and how it’s used

Ideal for service panels in homes or small businesses that use Zinsco bolt-on breakers. This part shines in retrofit projects where a precise 30A bolt-on unit is required to restore protection without changing the surrounding panel hardware.

Installation notes and care

Before you order, confirm fit and ratings for your exact panel model. The UBIZ30B is best referenced by part number when confirming compatibility. For safety, disconnect power and follow local electrical codes or consult a licensed electrician when performing replacements.

What this means for you

With the Zinsco UBIZ30B, you’ll have a dedicated, properly rated device that aligns with your panel’s design and safety goals. It’s not just about replacing a breaker — it’s about maintaining system reliability, protecting circuits, and ensuring peace of mind in your electrical installation.