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3TH8040-0AB4

Siemens
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Siemens 3TH8040-0AB4 is a 4-pole control relay designed for reliable motor control and industrial automation applications. This positive drive relay operates with a 24V DC coil and features 4 normally open (NO) fixed contacts, providing consistent switching performance in demanding environments. The unit weighs 0.8 lb and is designed for compact DIN rail mounting, ensuring easy integration into control panels. It is built to meet IEC standards for control relays, offering high contact reliability and durability. Typical applications include motor control circuits and general industrial automation systems.

Key Features & Specifications
  • Manufacturer: Siemens
  • Item Subcategory: Contactor
  • Weight: 0.8 lb
  • Poles: 4
  • Contact Type: 4 Normally Open (NO) fixed contacts
  • Coil Voltage: 24V DC
  • Mounting Type: DIN rail
  • Contact Rating: Typically 10A at 600V AC (per similar models)
  • Series/Frame: 3TH8 series
  • Classification: Positive drive control relay
  • Standards: IEC rated
  • Application: Motor control and industrial automation


Siemens 3TH8040-0AB4 - Control Relay 4 Pole 24V DC