Siemens 5SY61257 - Miniature Circuit Breaker 25A 1-Pole (400V)
Siemens 5SY61257 - Miniature Circuit Breaker 25A 1-Pole (400V)

Siemens 5SY61257 - Miniature Circuit Breaker 25A 1-Pole (400V)

Siemens
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Siemens 5SY61257 Circuit Breaker - Miniature Circuit Breaker 25A 1-Pole (400V) The Siemens 5SY61257 is a 1-pole miniature circuit breaker from the 5SY Series, designed for thermal-magnetic protection against overloads and short circuits in commercial and industrial applications. It is rated for 25A at 400V AC with a 6kA interrupting capacity, utilizing a LI (Long-Time and Instantaneous) trip function for precise current management. This molded case unit measures 3.661 x 0.827 x 3.268 inches and weighs 0.337 lb, featuring a feed-thru connection and DIN rail mounting for straightforward installation in standard electrical panels. It complies with multiple international standards including CSA 22.2, EN 60898-1/-2, EN 60947-2, GB 10963.1/.2, and UL 1077, ensuring broad regulatory acceptance. Typical applications include branch circuit protection in distribution boards, industrial control panels, and commercial building electrical systems.

Key Features & Specifications
  • Type: Miniature Circuit Breaker
  • Manufacturer: Siemens
  • Model: 5SY61257
  • Family: 5SY Series
  • Item Subcategory: Molded Case
  • Poles: 1
  • Current Rating: 25A
  • Voltage Rating: 400V
  • AIC Rating: 6kA@400V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Feed-Thru
  • Phase: 1
  • Dimensions: 3.661 x 0.827 x 3.268 inch
  • Weight: 0.337 lb
  • Country of Origin: Germany
  • Mounting Type: DIN Rail
  • Tripping Curve: C
  • Energy Limiting Class: 3
  • Protection Class: IP20
  • Standards: IEC 60947-2
  • Certification: CSA 22.2, EN 60898-1/-2, EN 60947-2, GB 10963.1/.2, UL 1077


Product Identification
  • UPC: 754554864822