Siemens 4 Pole Type B Residual Current Circuit Breaker, 40A 5SM3, 300mA

  • RS Stock No. 621-9963
  • Mfr. Part No. 5SM3644-4
  • Manufacturer Siemens
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): DE
Product Details

Series 5SM3, Type B SEQUENCE, 4-pole

All-current-sensitive FI circuit breaker for detection of residual AC currents, pulsating and smooth residual DC currents
Increased operating reliability in networks with capacitive impedances based on adapted actuation characteristic
Switch handle and test button may be locked via handle lock
Time-delayed disconnect function in the event of transient stray currents
High current capacity < 3 kA


Systems with consumers in which smooth residual DC currents may also occur
Use in three-phase systems


IEC / EN 61008-1, IEC / EN / 61543


VDE 0664 Part 10, VDE 0664 Part 100, VDE 0664 Part 30

Siemens FI circuit breaker

Attribute Value
Current Rating 40A
Number of Poles 4
Range Sentron
Trip Sensitivity 300mA
Tripping Characteristics Type B
Voltage Rating 400V
Series 5SM3
Discontinued product