Square D PKA36080U31A 31A 3-Pole 600 V Circuit Breaker

The Square D PKA36080U31A is a purpose-built circuit breaker engineered to guard three-phase electrical systems with precision. With a 31 A rating, a 3-pole configuration, and a 600 V maximum, this device is designed to protect demanding loads while ensuring safe, automatic shutdown during overloads.

Key specifications

• Current rating: 31 A
• Poles: 3
• Voltage rating: 600 V
• Part number: PKA36080U31A
• Brand/series: Square D PK A family compatible device

Why this 3-pole design matters

Three-pole protection means all three phases are disconnected together in an overload or fault condition. This coordinated shutdown reduces the risk of arc flash, protects conductors and motors, and helps maintain safe operation of 3-phase equipment in industrial and commercial environments. The PK A-style form factor is chosen for reliable mounting and consistent trip characteristics in panels that require a three-phase, 600 V distribution solution.

Ideal applications

• Industrial motor circuits and three-phase equipment up to 31 A
• Commercial distribution panels where three-phase protection is essential
• Replacement or upgrades for compatible Square D PK A-series panels and assemblies

Installation and compatibility tips

• Ensure panel compatibility with 3-pole, 600 V breakers in the Square D PK A family.
• Verify conductor sizing and enclosure clearance align with a 31 A, 3-pole device.
• Follow the manufacturer's installation instructions for mounting and terminal torque to ensure reliable performance.
• Use in circuits where simultaneous disconnection of all three phases is required for safe operation of motors and three-phase loads.

For professionals seeking dependable, category-appropriate protection in three-phase systems, the Square D PKA36080U31A delivers precise protection with a straightforward, compatible design that slots into existing PK A-series panels and distributions, ensuring consistent performance across demanding applications.