Zinsco R3840 - 40A, 1-Pole, Circuit Breaker

Discover dependable overcurrent protection with the Zinsco R3840, a 40A, 1-Pole circuit breaker designed for modern electrical distribution. This compact, single-pole unit is ideal for panelboards, switchboards, and control panels where space is at a premium but reliability is non-negotiable.

Key benefits

• Precise 40A protection for circuits that demand reliable current limiting in industrial and commercial setups.
• 1-Pole configuration offers flexible integration in panelboards, switchboards, and control panels.
• Durable, dependable operation designed for demanding environments and long service life.
• Simple installation supports quick replacement in existing distributions, reducing downtime.
• Versatile applications suitable for distribution panels and motor control centers, as well as OEM systems.

Ideal use cases

• Industrial facilities wiring medium-current circuits that require robust protection
• Commercial equipment distribution where space-saving single-pole breakers are preferred
• OEM projects integrating standardized, reliable overcurrent protection in control panels
• Motor control centers needing dependable protection for individual feeders

Specifications

• Current rating: 40A
• Poles: 1-Pole
• Breaker type: Circuit Breaker

Why this Zinsco breaker stands out

Designed for industrial, commercial, and OEM applications, the R3840 delivers dependable overcurrent protection in distribution panels and motor control centers. Its focused 40-amp, 1-pole design keeps panel layouts clean while safeguarding circuits and equipment. If you need a precise, purpose-built solution that merges straightforward installation with robust performance, the Zinsco R3840 is a thoughtful, mission-critical choice.