HK3F120 - 1200Amp Max. *Frame Only*

HK3F120 - 1200Amp Max. *Frame Only*

The HK3F120 molded case circuit breaker frame is a 3-pole, 1200-amp HK frame component designed for use in compatible HK3 electrical systems. This frame-only unit is intended for applications where maintaining your existing power distribution configuration and matching established equipment specifications are important.

Key Features and Benefits

• 1200 Amp Frame Rating: Designed for HK frame applications requiring a 1200-ampere circuit breaker frame.
• 3-Pole Configuration: Supports compatible three-phase electrical system applications.
• HK3 Frame Compatibility: Intended for systems that specify HK3 frame components for replacement and maintenance needs.
• Frame-Only Design: Provides the molded-case circuit breaker frame only, without additional breaker components.
• Type ET Configuration: Designed as a Type ET 1200-ampere HK frame application.
• 40°C Application Rating: Designed for use in applications with a 40°C operating environment.
• Replacement-Focused Component: Helps maintain existing electrical systems where matching form, fit, and equipment specifications are important.

Technical Specifications

• Part Number: HK3F120
  
• Type: HK3
  
• Component Type: Molded Case Circuit Breaker Frame Only
  
• Frame Type: HK Frame
  
• Amperes: 1200 A
  
• Poles: 3
  
• Approximate Shipping Weight: 55.00 lbs.
  
• Dimensions: 9.00"W x 15.50"L x 4.00"D
  
• Height: 15.50 in.
  
• Width: 9.0 in.
  
• Depth: 4.0 in.
  
• A.I.C. Ratings:
  • 42kA @ 600VAC
  • 50kA @ 480VAC
  • 65kA @ 240VAC
• Temperature Rating: 40°C
  
• Frame Rating: 1200 Ampere HK Frame
  
• Trip Unit Type: ET
  

Material Compliance and Certifications

The HK3F120 molded case circuit breaker frame should be applied and installed in accordance with the requirements of the electrical equipment it is used with and all applicable electrical codes and standards. Voltage ratings, interrupt ratings, and system compatibility should be verified before installation. Certification and compliance details should be confirmed through product markings and available manufacturer documentation.

Where It Works Best

The HK3F120 is well suited for industrial facilities, commercial buildings, and electrical maintenance applications where HK3 frame-compatible equipment is already installed. It works best in situations where maintaining an existing power distribution design requires a matching circuit breaker frame component. Electricians, contractors, and facility maintenance teams can use this type of frame in established switchgear and electrical distribution systems where proper fit, compatibility, and application requirements must be maintained.