Square D FCL340201021 20A 3-Pole 480 V Circuit Breaker Potential Transformer

The Square D FCL340201021 is a purpose-built circuit breaker that combines dependable protection with built-in sensing capabilities for modern industrial power systems. Rated at 20 A and configured as a 3-pole device, it delivers balanced, three-phase protection in environments where reliability matters. Designed for a nominal 480 V distribution, this unit is a practical choice for demanding industrial panels and switchgear installations. Its integrated potential transformer adds direct voltage sensing, simplifying metering and relay coordination right at the breaker.

Why this Square D circuit breaker stands out

• 3-pole design provides synchronized protection across all three phases, reducing the risk of unbalanced faults.
• 480 V rating aligns with common industrial power networks, making it a fit for many factory and data-center applications.
• 20 A current rating protects branch circuits efficiently while minimizing nuisance trips.
• Integrated potential transformer enables accurate voltage measurement for metering and fast relay coordination without extra external components.
• Compatible with standard Square D panels and protection schemes for streamlined installation and maintenance.

Ideal use cases

• Three-phase industrial feeders in manufacturing plants and process facilities that require reliable overcurrent protection with voltage sensing.
• Panel boards and switchgear where integrated metering reduces wiring complexity and enhances monitoring capabilities.
• Electrical infrastructure in data centers or laboratories that benefit from precise voltage data to support protective relays and energy management systems.

Practical benefits and outcomes

By integrating a potential transformer directly into the circuit breaker, the FCL340201021 simplifies voltage monitoring, improves protection relay performance, and helps you achieve faster fault detection. This reduces downtime, supports accurate energy measurements, and promotes safer, more efficient operation of your three-phase 480 V distribution network.

Specifications at a glance

• Part Number: FCL340201021
• Current rating: 20 A
• Poles: 3
• Voltage rating: 480 V
• Type: Circuit breaker with integrated potential transformer

Designed for professionals who value precise protection with integrated sensing, the Square D FCL340201021 is a dependable choice for 3-phase, 480 V systems. Ensure compatibility with your panel and system voltage, and experience streamlined protection plus real-time voltage insights right at the breaker.