The Siemens EH3B045 is a high-quality molded case circuit breaker designed to deliver reliable circuit protection for industrial and commercial electrical distribution systems. Equipped with a thermal magnetic non-interchangeable trip unit, this breaker provides dependable overload and short-circuit protection to enhance operational safety and system reliability. Its EH frame style and bolt-on mounting configuration ensure secure installation, rugged durability, and long-term performance in demanding electrical environments. Suitable for operation on 240VAC and 480VAC systems at 50/60Hz, the EH3B045 offers efficient protection and strong interrupting performance for critical power applications.

Product Specifications

• Brand: Siemens / ITE
• Model: EH3B045
• Product Type: Molded Case Circuit Breaker (MCCB)
• Frame Type: EH
• Rated Current: 45 Ampere
• Number of Poles: 3 Pole
• Trip Unit Type: Thermal Magnetic Non-Interchangeable
• Mounting Type: Bolt On
• Frequency: 50/60Hz
• Terminal Type: Line and Load End Terminals Standard
• Lug Type: Load End Only
• Application: Commercial and Industrial Power Distribution

Technical Specifications

• Interrupting Capacity: 65kA @ 240VAC
• Interrupting Capacity: 18kA @ 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: 45A
• Pole Configuration: 3 Pole
• Interrupting Rating at 240VAC: 65 Kiloampere
• Interrupting Rating at 480VAC: 18 Kiloampere
• Maximum Voltage Capacity: 480VAC

Product Data

• Manufacturer: Siemens / ITE
• Product Series: EH Frame Style
• Product Condition Support: New Surplus & Certified Reconditioned
• Warranty: 1 Year In-House Warranty
• Installation Type: Bolt-On Mounting
• Terminal Configuration: Standard Line and Load End Terminals
• 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 ordered with the breaker can be professionally installed at no additional cost when installation requirements are specified during checkout. Installation and maintenance should only be carried out by qualified electrical personnel following applicable electrical codes and manufacturer recommendations. 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.

Returns are easy

You may return items within 30 days of delivery for a refund.

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