The Siemens EH3B125 is a high-capacity molded case circuit breaker designed for reliable and efficient protection of industrial and commercial electrical distribution systems. Built with a thermal magnetic non-interchangeable trip unit, it provides precise overload and short-circuit protection to ensure electrical safety and system stability. The EH frame construction combined with a bolt-on mounting design ensures secure installation, mechanical strength, and long operational durability. Rated for 240VAC and 480VAC systems at 50/60Hz, the EH3B125 delivers strong interrupting performance for demanding electrical applications.

Product Specifications

• Brand: Siemens / ITE
• Model: EH3B125
• Product Type: Molded Case Circuit Breaker (MCCB)
• Frame Type: EH
• Rated Current: 125 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: 125A
• 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 purchased with the breaker can be installed at no additional cost when complete configuration instructions are provided during checkout. Installation, servicing, and maintenance must be carried out 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.

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

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