3UA50-00-1B Siemens Thermal Delayed Overload Relay 1.25-2A Front Mount 1NO+1NC Solid State

Description:

• Genuine Siemens 3UA Series thermal delayed overload relay for reliable motor overload protection
• Adjustable current setting range of 1.25–2.0 Amps for precise motor protection
• Designed for front mounting directly onto compatible Siemens contactors and motor starters
• Solid-state overload relay provides dependable thermal overload protection for three-phase motors
• Includes 1 Normally Open (1 NO) and 1 Normally Closed (1 NC) auxiliary contacts for control and indication circuits
• Rated for systems up to 690 VAC
• Features manual reset, trip indication, and adjustable current setting dial
• Compatible with Siemens 3TF30, 3TF31, 3TF40, 3TF41, 3TB40, and 3TB41 contactors
• Ideal for motor starters, pumps, compressors, conveyors, machine tools, HVAC systems, and industrial automation
• Discontinued by Siemens but widely used for maintenance and replacement applications.

Specifications:

• Manufacturer Name: Siemens
• Part Number (MPN): 3UA50-00-1B
• Product Series: 3UA
• Product Type: Thermal Delayed Overload Relay
• Relay Type: Solid State Thermal Overload Relay
• Adjustable Current Range: 1.25–2.0 A
• Mounting Type: Front Mount on Siemens Contactors/Starters
• Auxiliary Contacts: 1 NO + 1 NC
• Rated Voltage: 690 VAC Max
• Protection: Motor Overload and Phase Failure Protection
• Reset Type: Manual Reset
• Compatible Contactors:
  • Siemens 3TF30
  • Siemens 3TF31
  • Siemens 3TF40
  • Siemens 3TF41
  • Siemens 3TB40
  • Siemens 3TB41
• Standards: UL Recognized, CSA Certified
• Application: Motor Starters, Industrial Control Panels, Pumps, Compressors, Conveyors, HVAC Equipment, Industrial Machinery.

Dimensions:

• Compact front-mounted design for Siemens World Series contactors.
• Mounting dimensions match compatible 3TF and 3TB contactors.

Weight:

• Approximate Weight: 0.45 kg (0.99 lb).