Zinsco | UBIZ230B | Circuit Breaker | 30A | 2-Pole | 240V

Protect your 240V circuits with precision using the Zinsco UBIZ230B circuit breaker. This 30A, 2-pole unit is engineered for maintenance, retrofit, and replacement projects where exact specifications matter, delivering reliable overcurrent protection for critical loads.

• Amperage: 30A
• Poles: 2-Pole
• Voltage: 240V
• Part reference: UBIZ230B

Why choose the UBIZ230B? The most dependable compatibility reference is the exact part number. This breaker is designed to fit Zinsco panels that require UBIZ230B, ensuring proper fit, secure connections, and predictable trip behavior for safe operation.

What problems does it solve? It delivers consistent protection for high-demand 240V circuits, reducing the risk of overloads and electrical hazards. Ideal for replacing aging breakers or conducting panel retrofits where preserving the original panel design and electrical clearance is important.

Use cases and installation context

• Replacing a worn 2-pole 30A breaker in a Zinsco panel that requires UBIZ230B
• Restoring a dedicated 240V circuit for appliances such as a dryer, water heater, or HVAC system
• Retrofitting older panels during home improvements while maintaining panel compatibility

Practical tips

• Always confirm fit and ratings against the panel labeling before ordering.
• Use the UBIZ230B part number as the primary compatibility reference to avoid mismatches.
• For safe installation, power down the service and consult a licensed electrician if you’re unsure about panel compatibility or wiring.