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Circuit Breaker
Zinsco | UBIZ250B | Circuit Breaker | 50A | 2-Pole | 240V | Bolt-On
★★★★★
| Amperes | 50 |
| Poles | 2 |
| Voltage | 240 |
| Product Type | Circuit Breaker |
Regular price
$510.00
Sale price
$510.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Zinsco | UBIZ250B | Circuit Breaker | 50A | 2-Pole | 240V | Bolt-On
Regular price
$510.00
Sale price
$510.00
Regular price
Unit price
Product description
Shipping
Introducing the Zinsco UBIZ250B circuit breaker — a 50-amp, 2-pole, 240-volt bolt-on protection device designed for reliable control of high-demand 240V circuits. Built for maintenance, retrofit, and replacement projects where exact specs matter, this unit pairs with Zinsco panels that require bolt-on mounting and 2-pole construction.
Key specifications
- Amperage: 50A
- Poles: 2-Pole
- Voltage rating: 240V
- Mounting style: Bolt-On
- Part number: UBIZ250B
- Brand: Zinsco
Why this matters
In 240V circuits — like large HVAC units, water heaters, or electric ranges — reliable, consistent protection is critical. The UBIZ250B delivers precise tripping characteristics at 50A, ensuring your system stays safeguarded without nuisance trips on startup surges. The two-pole design ensures both legs are switched, maintaining safety and protecting appliances on both hot wires.
Use cases
- Replacement for compatible Zinsco panels requiring bolt-on, 2-pole 50A 240V protection
- Retrofit projects where a direct UBIZ250B match is needed for service upgrades
- Maintenance swaps to refresh aging protection on 240V circuits
Compatibility and installation notes
Always confirm fit and ratings before ordering. The part number UBIZ250B is the best reference for compatibility with your panel. Since bolt-on breakers vary by model family, match the exact number to your panel's design and labeling.
What sets UBIZ250B apart
- Direct bolt-on mounting for a secure, vibration-resistant connection that resists loose connections over time
- 2-pole construction ensures simultaneous disconnection of both hot legs, improving safety
- Clear, 240V duty capability for demanding residential or light commercial loads
Practical tips for optimal performance
- Keep the panel interior clean and dry; handle the breaker with care to avoid bending terminals
- If you notice signs of wear, such as loosening or inconsistent trips, replace promptly rather than attempting field repairs
- Store replacement UBIZ250B units in a controlled environment to prevent corrosion before installation
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
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Lead time was reasonable and the part matched expectations when it arrived.
Procurement · Ontario
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Good value for industrial use. Customers mention easy installation.
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