Zinsco RC38-40 - 40A, 2-Pole, Circuit Breaker

Zinsco RC38-40 40A, 2-Pole Circuit Breaker is engineered to deliver dependable overcurrent protection in demanding electrical environments. This 2-pole design is built to connect seamlessly with panelboards, switchboards, and control panels, offering reliable protection for essential circuits in industrial, commercial, and OEM applications.

• Precise 40-amp protection: Rated to interrupt current at 40A, providing clear and robust protection for mid-range circuits without nuisance trips.
• Two-pole configuration: Simultaneously protects and disconnects both conductors in multi-wire circuits, enhancing safety and reducing the risk of backfeed or shared-fault conditions.
• Versatile installation points: Designed for use in panelboards, switchboards, and control panels where dependable overcurrent protection is critical to keep motors, drives, and automation equipment safe.
• Industrial, commercial, and OEM ready: Ideal for distribution panels and motor control centers where consistent performance and long-term reliability matter most.
• Durable, purpose-built construction: Built to withstand the rigors of demanding environments, helping minimize outages and maintenance downtime.

Why this 2-Pole breaker stands out

• Two-pole protection ensures coordinated disconnection across both hot legs, which is essential for multi-wire branch circuits and safe motor control operations.
• Designed to integrate with Zinsco panel families, simplifying replacements and upgrades in legacy systems without compromising safety or performance.
• Clear, straightforward specification set lets technicians quickly verify fitment and compatibility during installations or retrofits.

Ideal use cases

• Industrial motor control centers (MCCs) and distribution panels where robust overcurrent protection is required.
• Commercial electrical enclosures and control panels handling mid-range loads and critical circuits.
• OEM equipment assemblies that demand reliable protection with a compact, two-pole form factor.

Installation and practical notes

• Ensure compatibility with existing Zinsco panelboards, switchboards, or control panels before replacement.
• Install by qualified personnel, following all applicable electrical codes and safety practices.
• Verify proper torque and secure terminations to maintain reliable interruption performance.

Specifications at a glance

• Current rating: 40A
• Poles: 2-Pole
• Breaker type: Circuit Breaker
• Application: Industrial, commercial, and OEM distribution panels and motor control centers requiring dependable overcurrent protection