ED43B025L - 25Amp Circuit Breaker

ED43B025L - 25Amp Circuit Breaker

If you need a replacement breaker that fits your existing Siemens ED-frame system without extra complications, the Siemens ED43B025L is a dependable choice. This 25 Amp, 3-pole molded case circuit breaker is designed for commercial and industrial electrical distribution systems where maintaining the original form, fit, and function matters. It provides reliable overcurrent protection while helping keep your installed equipment layout consistent.

Part of the Siemens Sentron ED frame line, the ED43B025L uses a thermal magnetic trip unit to respond to both overloads and short circuits. The thermal trip handles sustained overcurrent conditions, while the magnetic trip reacts quickly to higher fault currents.

Key Features and Benefits

• Part of the Siemens Sentron ED frame circuit breaker family
• 25 Amp continuous current rating
• 3-pole design for three-phase systems
• Thermal magnetic trip unit for overload and short-circuit protection
• Rated for 480V AC applications
• 18kA interrupting capacity (18kAIC) at 480V AC
• Includes line and load side lugs (SA1E025)
• Accepts 14–10 AWG copper and 12–10 AWG aluminum conductors
• Designed for standard 40°C operating conditions
• Form, fit, and functional replacement for compatible Siemens ED-frame breakers
• Built to last for commercial and industrial use
  

Technical Specifications

• Catalog Number: ED43B025L
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Frame: Sentron ED Frame
  
• Trip Unit: Thermal Magnetic
  
• Amperage Rating: 25 Amps
  
• Voltage Rating: 480V AC
  
• Number of Poles: 3
  
• Interrupting Rating: 18kAIC at 480V AC
  
• Terminal Type: Line and Load Side Lugs (SA1E025)
  
• Wire Range: 14–10 AWG Copper / 12–10 AWG Aluminum
  
• Reference Operating Temperature: 40°C
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 6.35 in.
  • Depth: 3.92 in.
• Weight: 3.735 lb.
  
• Product Family: ED4 18kAIC, 480VAC
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens ED43B025L meets UL 489 and IEC 60947-2 standards for molded case circuit breakers. It is RoHS compliant (since July 1, 2006) and aligns with WEEE (2012/19/EU) requirements where applicable. Material information is available under REACH Article 33. Installation should always be handled by qualified electrical personnel and follow NEC and local electrical codes.

Where It Works Best

• Siemens ED-frame panelboards and switchboards
• Commercial and industrial electrical distribution systems
• 480V AC branch circuit protection
• Manufacturing facilities, warehouses, and commercial buildings
• Maintenance or replacement of existing Siemens ED-frame breakers
• Applications needing a 25 Amp, 3-pole breaker with 18kAIC rating
• Installations using line and load side lug connections
• Systems where maintaining original equipment compatibility is important