ED43B125 | Siemens 3-Pole 125A 480V Molded Case Circuit Breaker, Thermal Magnetic

Siemens · Circuit Breakers & Protection

Description  The Siemens ED43B125 is a 3-pole molded case circuit breaker designed for reliable protection of electrical systems in commercial and industrial applications. Rated at 125 amps with a maximum voltage of 480 VAC, this breaker provides thermal magnetic protection with long-time and instantaneous trip functions. Its bolt-on connection ensures secure installation in Sentron panelboards and SB switchboards.     Technical Specifications  Condition New/Never Used Surplus Brand Siemens Category Circuit Breakers Part Number ED43B125 Subcategory Molded Case Circuit Breakers Series Sentron Frame Type ED Amperage Rating 125 A Voltage Rating 480 VAC / 250 VDC Frequency Rating 50/60 Hz Number of Poles 3 Phase 3 Interrupting Rating 18 kAIC @ 480 VAC Trip Type Thermal Magnetic (Long-Time & Instantaneous) Connection Type Bolt-On (Load Side Lug) Wire Range AWG 3–3/0 Cu, AWG 1–2/0 Al Mounting Type Panelboard / Switchboard Standards UL, IEC, HACR, RoHS Temperature Rating 40 °C Dimensions (L x W x H) 3.92 in x 3 in x 6.35 in Actuator Type Toggle For Use With SB Switchboards, Sentron Panelboards Weight 1.40 kg     Information About ED43B125 The ED43B125 is part of Siemens’ Sentron ED series molded case circuit breakers, built for dependable circuit protection and compliance with UL and IEC standards. It is designed for three-phase systems, offering a 125 A current rating and 18 kA interrupting capacity at 480 VAC. The unit features a thermal magnetic trip mechanism to safeguard against overloads and short circuits. Its compact frame and bolt-on connection allow easy integration into panelboard and switchboard systems while maintaining high performance and safety. Key Features: Amperage Rating: Provides 125 A current capacity for mid-range power distribution applications. Voltage Rating: Supports up to 480 VAC, ensuring compatibility with standard industrial systems. Interrupting Capacity: Rated 18 kAIC at 480 VAC for dependable fault interruption. Trip Protection: Thermal magnetic trip with long-time and instantaneous functions for overload and short-circuit protection. Pole Configuration: 3-pole design supports three-phase systems with balanced load protection. Mounting Style: Bolt-on connection type for secure installation in panelboards and switchboards. Wire Compatibility: Accepts copper and aluminum conductors, from AWG 3 to 3/0 Cu and AWG 1 to 2/0 Al. Certifications: Complies with UL, IEC, HACR, and RoHS standards for safety and environmental requirements. The ED43B125 delivers the reliability and precision required for safe, efficient circuit protection in demanding electrical distribution environments.

Brand: Siemens · Category: Circuit Breakers & Protection

Key features

• Amperage Rating: Provides 125 A current capacity for mid-range power distribution applications.
• Voltage Rating: Supports up to 480 VAC, ensuring compatibility with standard industrial systems.
• Interrupting Capacity: Rated 18 kAIC at 480 VAC for dependable fault interruption.
• Trip Protection: Thermal magnetic trip with long-time and instantaneous functions for overload and short-circuit protection.
• Pole Configuration: 3-pole design supports three-phase systems with balanced load protection.
• Mounting Style: Bolt-on connection type for secure installation in panelboards and switchboards.
• Wire Compatibility: Accepts copper and aluminum conductors, from AWG 3 to 3/0 Cu and AWG 1 to 2/0 Al.
• Certifications: Complies with UL, IEC, HACR, and RoHS standards for safety and environmental requirements.

Specifications

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