Cutler-Hammer SPCL3B20 Circuit Breaker, 20A, 3-Pole, 480V

Meet the Cutler-Hammer SPCL3B20—a rugged circuit breaker purpose-built for demanding industrial electrical service, maintenance, and replacement projects. With a 20 A rating and a 3-pole design, this unit is engineered to protect three‑phase systems at up to 480 V, guarding motors, drives, and feeders from overloads and short circuits in high-demand environments.

Why this breaker stands out

• Part of the SPCL series from Cutler-Hammer, a trusted name in industrial protection solutions
• Three-pole configuration tailored for 3-phase power distribution systems
• Clear compatibility cue verify fit by part number SPCL3B20 and align with your application requirements
• Industrial-grade protection designed to integrate into service panels, replacement work, and ongoing maintenance programs

What problems it solves

• Prevents equipment damage and costly downtime by interrupting fault currents in 3-phase circuits
• Ensures safe, reliable disconnection for routine maintenance and emergency shutdowns in industrial facilities
• Supports scalable protection for motor control centers, feeders, and process lines operating at 480V

Ideal for whom and where

• Maintenance technicians replacing worn or obsolete breakers in SPCL-compatible panels
• Electrical engineers specifying discrete protection for new 3-phase installations up to 480V
• Facilities managers seeking durable, standard-form components for long-term reliability

Practical guidance and tips

• Always confirm part number and panel compatibility before installation—SPCL3B20 is designed for SPCL-series configurations and 480V systems
• Use as part of a coordinated protection strategy: pair with appropriate overcurrent devices and panel ratings to maintain system safety
• Document the replacement part in maintenance logs to simplify future service and ensure traceability

With the Cutler-Hammer SPCL3B20, you get a reliable, purpose-built solution for three-phase protection at 480V. Its straightforward 20A, 3-pole design makes it an effective choice for industrial panels, service enclosures, and replacement projects where dependable, code-aligned circuit interruption matters most.