Siemens

Siemens Contactor, aux, spring-loaded, 2NO+2NC, 5.5kW, 24VDC Part number 3RT2024-2BB44-3MA0

EAN / Barcode 4011209837171
Product Type Control Panel
Product Class Power contactor, AC switching
ETIM Class Power contactor, AC switching
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Product Description

Power Contactor

The SIRIUS 3RT2 power contactor is designed for switching motors with high reliability in a compact design.

Technical details:

  • Type: SIRIUS 3RT2 power contactor
  • Application: AC-3e/AC-3
  • Current: 12 A
  • Power: 5.5 kW / 400 V
  • Poles: 3-pole
  • Control Voltage: 24 V DC
  • Auxiliary Contacts: 2 NO + 2 NC
  • Terminal Type: Spring-loaded terminal
  • Size: S0
  • Auxiliary Switch: Captive auxiliary switch
  • Surge Suppressor: No surge suppressor retrofittable
  • Climate Resistance: Approved for worldwide use (e.g. IEC and UL/CSA)
  • IE3/IE4-ready

Customer benefits:

  • High contact reliability and performance from a compact design.
  • Can be combined with a variety of other components in the load feeder.
  • Factory tested device combinations.
  • Best connection to the automation level for various applications (parallel, via ASi or IO-Link).
  • Integrated auxiliary switches reduce design complexity.
  • Front-panel terminals simplify wiring.
  • Available in various sizes and wide performance range with AC and DC operation.
  • Spring-type terminals for fast, maintenance-free, and vibration-proof connection.
  • Comprehensive standardized range of accessories (e.g., auxiliary switches, auxiliary releases).
  • Available link modules, function modules, and SIRIUS 3RV29 infeed system reduce wiring expense.
  • Simple, efficient, and always up to date - SIRIUS modular system.

Technical Specifications

Depth154 mm
Height102 mm
Modular versionYes
Number of auxiliary contacts as normally closed contact2
Number of auxiliary contacts as normally open contact2
Number of normally open contacts as main contact3
Operating voltage AC 50 Hz690 V
Operating voltage AC 60 Hz690 V
Rated control supply voltage DC24 V
Rated operation current Ie at AC-1, 400 V40 A
Rated operation current Ie at AC-3, 400 V12 A
Rated operation current Ie at AC-4, 400 V12.5 A
Rated operation power at AC-3, 400 V5.5 kW
Rated operation power NEMA5.8839904 kW
Type of electrical connection of main circuitSpring clamp connection
Voltage type for actuatingDC
Width45 mm
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