SIEMENS 3UA55 40-1J Overload Relay provides essential thermal protection for three-phase motors in industrial control applications. Featuring an adjustable current range of 6.3–10A and a CLASS 10A tripping characteristic, it ensures fast and reliable motor shutdown during an overload event. It includes a Test function and selectable Hand/Automatic Reset modes. With robust design and clear auxiliary contacts (1 NO + 1 NC), this thermal overload relay is a vital component for ensuring motor Safety and operational Reliability in bulk automation projects.

Key Features:

• Brand: SIEMENS – a global leader in electrical and industrial components.

• Product Type: Thermal Overload Relay.

• Adjustment Range: Adjustable current setting from 6.3–10A.

• Overload Class: CLASS 10A for standard motor protection.

• Auxiliary Contacts: 1 Normally Closed (NC - terminals 95-96) and 1 Normally Open (NO - terminals 97-98).

• Rated Voltage (Ue): Up to 690 V AC.

• Reset Function: Selectable between Hand (H) and Automatic (A) reset modes.

• Compatibility: Designed for direct mounting to specific SIEMENS contactors.

Benefits:

• Enhanced Safety: Provides precise, thermal motor protection, drastically reducing the risk of burnout and fire.

• Operational Reliability: Dependable CLASS 10A tripping ensures motors are protected quickly during sustained overload conditions.

• Installation Efficiency: Direct-mount design simplifies installation and reduces wiring time, appealing to wholesale and surplus buyers.

• Flexibility: Hand and Automatic reset options allow customization for specific control circuit requirements.

• Long-Term Durability: Constructed to IEC and VDE standards for robust, long-lasting industrial service.