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ABB S3B - Molded Case 225A DC Breaker

ABB
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ABB S3B-3P-225A-DC is a 3-pole molded case circuit breaker from the SACE Isomax family, designed for DC power distribution protection with LI (Long-Time and Instantaneous) trip functions. It is rated for 225A at 240V DC and delivers a high interrupting capacity of 150kA at 240V DC to ensure robust fault clearance. The unit features a bolt-on connection, thermal magnetic protection, and a compact S3 frame size weighing 10 lb for fixed mounting installations. It complies with UL 489 and CSA C22.2 safety standards. This breaker is suitable for industrial DC power systems, switchboards, and panelboards requiring reliable overcurrent protection.

Key Features & Specifications
  • Manufacturer: ABB
  • Family: SACE Isomax
  • Type: S3B
  • Item Subcategory: Molded Case
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: S3
  • Poles: 3
  • Current Rating: 225A
  • Voltage Rating: 240V DC
  • Interrupting Capacity: 150kA at 240V DC
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Phase: 3
  • Weight: 10 lb
  • Mounting Type: Fixed
  • Certifications: UL 489, CSA C22.2