Siemens Sentron Switch disconnector, 4-pole, red/yellow, 37kA, 100A
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Siemens Sentron Switch disconnector, 4-pole, red/yellow, 37kA, 100A Part number 3LD2704-2TC53

EAN / Barcode 4011209680555
Product Type Control Panel
Product Class Switch disconnector (low voltage)
ETIM Class Switch disconnector (low voltage)
Out of Stock
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Product Description

Sentron, switch disconnector 3LD

The SENTRON 3LD is an EMERGENCY-OFF switch designed for safe shutdown of loads in various applications, featuring a 4-pole design and a robust rotary operating mechanism.

Technical details:

  • Type: Switch disconnector 3LD
  • Function: EMERGENCY-OFF switch
  • Poles: 4-pole
  • Current Rating: 100 A
  • Operating Power: 37 kW at AC-23 A at 400 V
  • Mounting: Front-mounted, 4-hole mounting of the handle
  • Applications: Suitable for three-phase motors, air conditioning and ventilation systems, machining and processing machines, mechanical and conveyor system construction, chemical industry, and food and beverage industry
  • Design: Modular design, fast and easy mounting of auxiliary switches
  • Terminal: N-PE terminal, or 4th pole
  • Disconnection Capability: Optimum disconnection of 16 A of 250 A from the power supply
  • Degree of Protection: IP65 with encapsulated enclosure for outdoor applications
  • Approvals: International IEC, UL, CCC, and shipbuilding approvals
  • Variants: Available for front mounting, mounting plate, DIN rail, or installation in distribution boards, with options for direct or door-coupling rotary operating mechanism
  • DC Applications: 3LD2 available in variants for DC applications

Customer benefits:

  • End-to-end safety for users and systems
  • Versatile and can be used worldwide
  • Fast and easy installation

Technical Specifications

Colour control elementRed
Degree of protection (IP), front sideIP65
Degree of protection (NEMA)Other
Depth112.5 mm
Device constructionBuilt-in device fixed built-in technique
Height107 mm
InterlockableYes
Max. rated operation voltage Ue AC690 V
Number of poles4
Number of switches1
Rated operation power at AC-23, 400 V37 kW
Rated operation power at AC-3, 400 V30 kW
Rated permanent current at AC-21, 400 V100 A
Rated permanent current at AC-23, 400 V70 A
Rated permanent current Iu100 A
Rated short-time withstand current lcw2 kA
Suitable for front mounting 4-holeYes
Type of control elementShort thumb-grip
Type of electrical connection of main circuitFrame clamp
Version as emergency stop installationYes
Version as main switchYes
Version as maintenance-/service switchYes
Version as safety switchYes
Width90 mm
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