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Siemens 3SB3400-0B - Auxiliary Contact Block (1NO, 10A)

Siemens
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Siemens 3SB3400-0B is a contact block accessory designed for expanding the functionality of pushbuttons and selector switches within motor control systems. This compact auxiliary contact block features a single normally open (NO) contact with a silver alloy contact material, rated for a maximum coil voltage of 600V AC/DC and a current rating of 10A. Constructed with a durable thermoplastic enclosure, it is engineered for reliable performance in demanding industrial environments and complies with relevant international standards for safety and interoperability. Its primary application is to provide additional signaling or interlocking circuits in control panels for machinery, conveyor systems, and automated processes.

Key Features & Specifications
  • Type: Auxiliary contact block, 1 NO contact, silver alloy, for mounting on contactors and pushbuttons
  • Voltage Rating: 600V AC/DC maximum
  • Current Rating: 10A
  • Configuration: 1 Normally Open (NO)
  • Standards: Complies with IEC/EN 60947-5-1
  • Applications: Industrial motor control panels, machinery, automation systems
  • Mounting: Snap-on attachment to compatible contactors and operators
  • Enclosure: Thermoplastic
  • Contact Material: Silver alloy
  • Item Subcategory: Motor Control Part And Accessory
  • Section: Contact Block
  • Weight: 0.0242 lb


Product Identification
  • Manufacturer Part Number: 3SB3400-0B
  • Manufacturer: Siemens