Siemens 3RT19555AU31 - Auxiliary Switch Block 10A
Siemens 3RT19555AU31 - Auxiliary Switch Block 10A

Siemens 3RT19555AU31 - Auxiliary Switch Block 10A

Siemens
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Siemens 3RT19555AU31 is a modular auxiliary switch block designed for use with SIRIUS 3RT contactors and 3RH contactor relays to provide additional signaling and control functions. This device operates with a rated insulation voltage of 690 V and supports a conventional thermal current of up to 10 A, ensuring reliable switching for auxiliary circuits. The unit features a compact, snap-on design for direct mounting onto the front of compatible contactors, with a weight of 5.19 lb and robust thermoplastic construction for industrial environments. It complies with IEC 60947-5-1 and UL/CSA standards, making it suitable for global machine control and automation systems. Typical applications include motor control centers, conveyor systems, and industrial panel building where expanded auxiliary contact capacity is required.

Key Features & Specifications
  • Type: Auxiliary switch block, modular, snap-on mounting
  • Voltage Rating: 690 V AC/DC (rated insulation voltage)
  • Current Rating: 10 A (conventional thermal current)
  • Dimensions: Compact design for front mounting on 3RT/3RH devices
  • Standards: IEC 60947-5-1, UL, CSA
  • Applications: Motor control, conveyor systems, industrial automation panels
  • Switch Type: Auxiliary contact block
  • Configuration: 1 NO + 1 NC (standard configuration)
  • Coil Voltage Maximum: Not applicable (switch block only)
  • Temp Rating: -25°C to +60°C (operating)
  • Shipping Dimensions: Varies by packaging
  • Phase: Not applicable
  • Amperage: 10 A
  • Connection: Screw terminals
  • Poles: 2 (1 NO + 1 NC)
  • Protection: IP20 (finger-safe)
  • Functions: Auxiliary signaling and control
  • Frame Size: S00 (compatible with 3RT1/3RH1 series)
  • Mounting: Snap-on front mounting
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not applicable
  • Aux Contacts: 1 NO + 1 NC
  • Enclosure: Open type (no enclosure)
  • Relay Style: Not applicable
  • Wire Size: 1 x (0.5–2.5 mm²) or 2 x (0.5–1.5 mm²)
  • Certification: CE, UL, CSA, EAC
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Screw terminals
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Not applicable
  • Standards: IEC 60947-5-1, UL 508, CSA C22.2 No. 14
  • Compatible Frames: SIRIUS 3RT1, 3RH1 series
  • Installation Type: Front mounting on contactor/contactor relay
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 10 A
  • Operating Temperature Maximum Celsius: 60°C


Product Identification
  • UPC: 75455477414
  • GTIN: 00754554774145