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Siemens ED43B125 125A 3-Pole Molded Case Circuit Breaker

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ManufacturerSiemens

Part numberED43B125

Amperage 125A

Voltage 480V AC

Poles 3

Interrupt Rating 18kA @ 480V

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125A current rating 3-pole configuration 480V AC voltage 18kAIC interrupting capacity Thermal-magnetic trip Load lug connection

Product description

The Siemens ED43B125 is a 3-pole molded case circuit breaker designed for reliable power distribution and protection in commercial and industrial applications. As part of the Sentron ED4 frame series, it features a 125A current rating, a 480V AC voltage capacity, and a thermal-magnetic trip unit. This breaker has an interrupting rating of 18kAIC at 480V, ensuring safety against overcurrents and short circuits.

Engineered for demanding environments, the ED43B125 is suitable for panelboards, switchboards, and motor control centers. It features load lug connections and a bolt-on mounting style, providing secure and straightforward installation. The breaker is built for consistent performance.

Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts, offers the Siemens ED43B125. We are dedicated to providing quality, cost-effective solutions to keep your operations running efficiently. Rely on Stanlo Automation for your critical part needs and benefit from our dependable service.

Technical specifications

Amperage	125A
Voltage	480V AC
Poles	3
Interrupt Rating	18kA @ 480V
Trip Type	Thermal Magnetic
Connection	Load Lug
Mounting	Bolt-On
Series	Sentron ED4

Common applications

Panelboards

Switchboards

Motor Control Centers

Industrial facilities

Commercial buildings

Power distribution systems

Compatible systems

Siemens P1-P5 Panelboards SB Switchboards Compatible Motor Control Centers

Also known as

Siemens ED43B125 MCCB ED43B125 breaker Siemens Sentron 125A

Replaces / compatible with

This breaker is a compatible replacement for older Siemens ED series circuit breakers. Always verify the exact part number for compatibility.

Technical note

Expert tip

This breaker is designed for bolt-on mounting into Siemens P1 through P5 panelboards and compatible switchboards.

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Frequently asked questions

What is the interrupting rating of the Siemens ED43B125 circuit breaker at 480V?

The Siemens ED43B125 circuit breaker has an interrupting rating of 18kAIC at 480V. This ensures it can safely interrupt fault currents up to this level.