Exactly what we needed for a shutdown replacement. No surprises.
Plant · Shutdown
Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
| Amperes | 100 |
| Poles | 3 |
| Voltage | 240 |
| Product Type | Circuit Breaker |
Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Meet the Zinsco QB2430100 Circuit Breaker — a purpose-built 100A, 3-Pole, 240V bolt-on breaker designed to deliver dependable protection in compatible panels. Built for maintenance, retrofit, and replacement projects, this unit follows the exact specifications you need when updating an electrical distribution system.
Why this matters: In essential electrical work, matching the panel’s design and current rating is crucial for safety and performance. The QB2430100 from Zinsco is explicitly suited for maintenance, retrofit, and replacement tasks where a 3-pole, 240V solution with a secure bolt-on mount is required. This isn’t a generic part—it’s a genuine component chosen to align with your panel’s original architecture and protection scheme.
Compatibility reminder: Confirm fit and ratings before ordering. The part number QB2430100 is the best reference for compatibility with Zinsco panels and similar systems.
Installation considerations: This bolt-on breaker should be installed by a qualified electrician. Ensure the hosting panel accepts bolt-on style breakers and that the panel’s labeling and ratings align with the QB2430100 before proceeding. Proper tooling and torque on mounting hardware are important to maintain a reliable, long-lasting connection.
In practice, the Zinsco QB2430100 delivers precise protection for 100A circuits across three poles at 240V, making it a focused, reliable choice for panel upgrades, replacements, or new retrofits where its exact specifications are required. Add it to your cart and be ready for your next compatible installation or service task.
Contact sales@ampstate.com
Shipping cost is based on weight. Just add products to your cart and use the Shipping Calculator to see the shipping price.
We want you to be 100% satisfied with your purchase.
General feedback we often hear from customers purchasing industrial electrical parts.
Exactly what we needed for a shutdown replacement. No surprises.
Plant · Shutdown
Good communication and clear updates while the order was processed.
Project · Coordination
Looks and feels like a proper industrial-grade part. Works as expected.
Service · Field install