The Siemens HED43B020 is a compact yet high-performance molded case circuit breaker designed for reliable protection of industrial and commercial electrical distribution systems. Featuring a thermal magnetic non-interchangeable trip unit, it delivers precise overload and short-circuit protection to safeguard electrical equipment and ensure system stability. Its HED frame construction combined with a bolt-on mounting design provides secure installation and dependable long-term performance. Engineered for 240VAC and 480VAC systems at 50/60Hz, this breaker offers high interrupting capacity, making it suitable for demanding fault conditions despite its lower current rating.

Product Specifications

• Brand: Siemens / ITE
• Model: HED43B020
• Product Type: Molded Case Circuit Breaker (MCCB)
• Frame Type: HED
• Rated Current: 20 Ampere
• Number of Poles: 3 Pole
• Trip Unit Type: Thermal Magnetic Non-Interchangeable
• Mounting Type: Bolt On
• Frequency: 50/60Hz
• Application: Commercial and Industrial Power Distribution

Technical Specifications

• Interrupting Capacity: 100kA @ 240VAC
• Interrupting Capacity: 42kA @ 480VAC
• Maximum Voltage Rating: 480VAC
• Operating Temperature Reference: 40°C
• Protection Type: Overload and Short Circuit Protection
• Connection Type: Bolt-On Connection
• Frame Construction: Molded Case Design
• Standard Compliance: Industrial Circuit Protection Standards

Voltage and Ratings

• Rated Operational Voltage: 240VAC / 480VAC
• Frequency Rating: 50/60Hz
• Current Rating: 20A
• Pole Configuration: 3 Pole
• Interrupting Rating at 240VAC: 100 Kiloampere
• Interrupting Rating at 480VAC: 42 Kiloampere
• Maximum Voltage Capacity: 480VAC

Product Data

• Manufacturer: Siemens / ITE
• Product Series: HED Frame Style
• Product Condition Support: New Surplus & Certified Reconditioned
• Warranty: 1 Year In-House Warranty
• Installation Type: Bolt-On Mounting
• Product Use: Electrical Distribution and Protection Systems

Important Note

Product images are for identification purposes only and may represent a standard base model configuration. Accessories purchased with the breaker can be installed at no additional cost when full configuration details are provided during checkout. Installation, maintenance, and servicing must be performed by qualified electrical personnel in accordance with applicable electrical codes and manufacturer guidelines. The included one-year warranty covers repairs, labor, replacement parts, and standard shipping required for recertification, excluding damage caused by misuse, improper installation, or normal operational wear and tear.