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Siemens SENTRON 3VL1600 - User Manual

Siemens SENTRON 3VL1600
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System Manual
SENTRON
Protection devices
3VL IEC molded case circuit breakers
11/2013Edition
Answers for Infrastructure & Cities.

Table of Contents

Questions and Answers

  • K
    Keith LeeAug 9, 2025
    Why does my Siemens SENTRON 3VL1600 circuit breaker keep tripping due to overload?
    • T
      Timothy HorneAug 9, 2025
      If your Siemens Protection Device circuit breaker trips due to overload, it indicates the circuit breaker is working as intended. First, verify if the operating current exceeds the thermal tripping limit. Inspect the terminals for discoloration, as cables may loosen due to vibration or cold flow. High ambient temperatures can also cause tripping; consider derating the In or IR values if temperatures in enclosures are too high. Finally, if none of the above apply, inspect the overcurrent release for discoloration and ensure tightening torque values are correct.
  • H
    hfieldsAug 19, 2025
    What to do if Siemens SENTRON 3VL1600 circuit breaker trips due to short-circuit?
    • C
      Christine HarrisAug 19, 2025
      If the Siemens Protection Device circuit breaker trips because of a short-circuit, it could be due to excessive making current, such as from a motor. Try adjusting the magnetic trip rating to a higher setting until the breaker stops tripping when the motor starts. High current peaks, like those during star-delta starter transitions, can also cause this. In such cases, the short-circuit release "I" must be set to a higher value; however, note that this might reduce motor protection.
  • H
    Hector GutierrezNov 27, 2025
    Why are the mechanical and electrical functions of my Siemens SENTRON 3VL1600 affected?
    • D
      dcrossNov 27, 2025
      If the mechanical and electrical functions of your Siemens Protection Device are affected, high humidity or corrosion could be the cause. The molded case circuit breakers must not be used in environments with high humidity since this can cause dielectric and insulation problems. In such environments, appropriate measures need to be taken, such as placing the circuit breaker in an enclosure. Also, the molded case circuit breakers are not designed to be used in aggressive environments and should be installed in a housing. If the issue relates to internal accessories, determine the type installed by removing the circuit breaker cover and checking the order number. Then, verify their correct function. Ensure the correct voltage is connected to the undervoltage release, and that voltage is not ...

Siemens SENTRON 3VL1600 Specifications

General IconGeneral
Rated Current1600 A
Rated Voltage690 V
Rated Ultimate Short-Circuit Breaking Capacity Icu100 kA
Rated Service Short-Circuit Breaking Capacity Ics100 kA
Number of Poles3 or 4
StandardsIEC 60947-2
Trip UnitElectronic Trip Unit (ETU)
Protection FunctionsOverload, Short-circuit, Earth Fault
Mounting TypeFixed

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