Square D KH36125 - 125A 3 Pole Molded Case Circuit Breaker.

The Square D KH36125 serves as a critical 125-Amp, 3-pole molded case circuit breaker (MCCB) within the respected K-Frame product line. This unit provides essential overcurrent protection for three-phase electrical distribution systems, safeguarding industrial and commercial infrastructure from the damaging effects of electrical faults. Its design prioritizes reliability and system uptime, making it a foundational component for high-capacity power environments.

Thermal-Magnetic Protection Capabilities

The KH36125 utilizes a dual-action thermal-magnetic trip unit to provide comprehensive circuit defense. The thermal mechanism protects against sustained overcurrent conditions by monitoring heat accumulation, while the magnetic element triggers instantaneous tripping during high-magnitude short circuits. This combination ensures maximum uptime for electrical loads while maintaining a high safety threshold for downstream equipment and personnel.

Key Features and Technical Specifications

• 125A Continuous Current Rating: Supports heavy-duty electrical loads in demanding environments without premature tripping.
• 3-Pole Configuration: Designed specifically for seamless integration into three-phase power distribution networks.
• K-Frame Architecture: Offers a compact physical footprint that allows for efficient space utilization in panelboards without sacrificing high interrupting capacity.
• Molded Case Construction: Uses high-grade dielectric materials for superior mechanical strength and reliable electrical insulation.
• Manual Control Interface: Includes a high-visibility toggle handle for manual switching and clear indication of the breaker status (On, Off, or Tripped).

Diverse Applications and Use Cases

The Square D KH36125 is a versatile solution for a variety of power distribution needs. Its technical specifications make it an ideal choice for several sectors:

• Commercial Infrastructure: Protects branch circuits and main feeders in office buildings, retail centers, and residential complexes.
• Industrial Power Distribution: Manages and protects electrical loads for manufacturing equipment, motors, and industrial control panels.
• HVAC Systems: Provides dedicated circuit protection for large-scale heating, ventilation, and air conditioning units in facility management.

Material Integrity and Build Quality

The Square D KH36125 is manufactured using high-strength insulating materials that provide excellent thermal stability and resistance to mechanical stress. The internal contacts are designed for high conductivity and durability, ensuring minimal voltage drop across the breaker during standard operation. The rugged molded case protects internal components from dust and debris, extending the service life of the device in industrial environments.

Installation and Maintenance

The Square D KH36125 features standard terminal connections to facilitate secure wiring and rapid installation. The K-Frame design allows for seamless integration into compatible Square D panelboards and switchboards. Regular inspection of the toggle handle and terminal torque ensures long-term operational reliability in high-capacity power systems. This model complies with industry standards for safety and performance, providing peace of mind for electrical contractors and facility managers.

Bulk Supply and Wholesale Availability

We provide the Square D KH36125 in individual units and bulk quantities to support large-scale electrical projects and inventory requirements. This model is a standard component for electrical contractors requiring reliable, code-compliant circuit protection for new constructions or system retrofits. Purchasing the KH36125 ensures a high-quality protection solution backed by the engineering excellence of the Square D brand.