SIEMENS ED43M125 BRKR ED4 3P 480V 125A 50C Molded Case Circuit Breaker

The Siemens ED43M125 molded case circuit breaker is designed for reliable protection in electrical distribution systems, suitable for use by electrical distributors and switchgear suppliers. Calibrated for 50°C applications, this 3-pole breaker supports a 480V operating voltage and a continuous current rating of 125A. It operates at a frequency rating of 400 Hz with an interrupt rating of 18 kAIC, making it appropriate for industrial and commercial lighting solutions, wire and cable installations, and other electrical applications requiring robust circuit protection.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: ED43M125
• Frame: ED
• Number of Poles: 3
• Voltage Rating: 480V
• Current Rating: 125A
• Frequency Rating: 400 Hz
• Interrupt Rating: 18KAIC
• Operating Temperature: 50°C
• Dimensions (W x H x L): 7 in x 6 in x 4 in
• Product Weight: 3.84 lbs
• Application: Calibrated for 50°C Application
• Actuator: Varying
• Enclosure: Varying

Features

• Non-interchangeable trip unit integrated in ED frame for enhanced safety and compliance with UL 489 / CSA C22.2 No. 5 requirements
• Thermal-magnetic trip mechanism suitable for stable and reliable circuit protection
• Designed for use in panelboards, switchboards, and other approved enclosures
• Compatible with copper and aluminum wire connectors as per UL486A and UL486B standards
• Manual operation includes ON, OFF, and TRIP positions with push-to-trip button for testing
• Suitable for use in 50/60 Hz and 400 Hz AC systems as well as 250 V DC applications

Downloads & Links

• Spec Sheet
• Spec Sheet