KAL361251021 - 125 Amp Circuit Breaker

KAL361251021 - 125 Amp Circuit Breaker

The KAL361251021 is a high-performance 3-pole molded-case thermal magnetic circuit breaker engineered for demanding electrical installations. Rated for up to 125 A, this breaker is ideal when you need reliable, consistent protection in commercial, industrial, or mission-critical environments. With an AIC (short-circuit interrupt) rating of up to 42 kA at 240 VAC, it’s built to defend against fault conditions while maintaining system stability and safety. Its compact dimensions and smart features make it a go-to option for electrical professionals tackling mid- to high-capacity protection needs.

Key Features and Benefits

• Thermal-magnetic protection: Combines overload (thermal) and short-circuit (magnetic) defense in one unit.
• High interrupt capacity: Up to 42 kA at 240 VAC (also 25 kA @ 480 VAC, 22 kA @ 600 VAC).
• Molded-case housing: Durable and space-efficient, built to endure industrial environments.
• Integrated 120 VAC shunt trip: Enables remote tripping and system integration.
• Line and load lugs included: Simplifies wiring; reduces installation labor and risk of error.
• 3-pole configuration: Supports three-phase systems in a unified package.

Technical Specifications

• Frame Type: KAL
• Poles: 3
• Amperage: 125 A
• Voltage / AIC Ratings:
  • 240 VAC ⇒ 42 kA
  • 480 VAC ⇒ 25 kA
  • 600 VAC ⇒ 22 kA
• Dimensions:
  • Width: 4.50″
  • Length: 8.00″
  • Depth: 3.69″
• Weight: Approx. 10 lb
• Frequency: 60 Hz
• Ambient Temperature Rating: 40 °C

Material Compliance and Certifications

• Industry Standards: Crafted using materials that meet industry safety standards, this breaker is tested for reliable performance under rigorous operating conditions.
• Certifications: It complies with applicable electrical codes and certification standards (such as UL/IEC-level requirements), ensuring both safety and peace of mind.
• Environmental Compliance: Environmentally compliant materials are used wherever possible, aligning with green building and sustainability goals.

Where It Works Best

• This 125 A, 3-pole breaker is perfect for installation in panelboards, switchboards, motor control centers, and distributed feeder systems. It’s especially useful in manufacturing plants, factory floors, data centers, commercial buildings, and critical infrastructure installations. Whenever you need dependable three-phase protection with a high short-circuit interrupting capacity, the KAL361251021 delivers.